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Mon, 12 Feb 2018 21:03:59 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1elLGO-0006tF-G2 for linux-mtd@lists.infradead.org; Mon, 12 Feb 2018 21:03:50 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 32C022036E; Mon, 12 Feb 2018 22:03:36 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (91-160-177-164.subs.proxad.net [91.160.177.164]) by mail.free-electrons.com (Postfix) with ESMTPSA id B5D4620703; Mon, 12 Feb 2018 22:03:25 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org Subject: [PATCH 1/5] mtd: Initialize ->fail_addr early in mtd_erase() Date: Mon, 12 Feb 2018 22:03:07 +0100 Message-Id: <20180212210311.23244-2-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180212210311.23244-1-boris.brezillon@bootlin.com> References: <20180212210311.23244-1-boris.brezillon@bootlin.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Bert Kenward , Solarflare linux maintainers , Artem Bityutskiy , Miquel Raynal , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Joern Engel , Greg Kroah-Hartman , Kyungmin Park , netdev@vger.kernel.org, Paul Mackerras , Benjamin Herrenschmidt , Edward Cree , Robert Jarzmik MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org mtd_erase() can return an error before ->fail_addr is initialized to MTD_FAIL_ADDR_UNKNOWN. Move this initialization at the very beginning of the function. Signed-off-by: Boris Brezillon Reviewed-by: Richard Weinberger --- drivers/mtd/mtdcore.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index a1c94526fb88..c87859ff338b 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -953,6 +953,8 @@ EXPORT_SYMBOL_GPL(__put_mtd_device); */ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) { + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + if (!mtd->erasesize || !mtd->_erase) return -ENOTSUPP; @@ -961,7 +963,6 @@ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; - instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; if (!instr->len) { instr->state = MTD_ERASE_DONE; mtd_erase_callback(instr); From patchwork Mon Feb 12 21:03:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 872403 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; 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Mon, 12 Feb 2018 22:03:26 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org Subject: [PATCH 2/5] mtd: Get rid of unused fields in struct erase_info Date: Mon, 12 Feb 2018 22:03:08 +0100 Message-Id: <20180212210311.23244-3-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180212210311.23244-1-boris.brezillon@bootlin.com> References: <20180212210311.23244-1-boris.brezillon@bootlin.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Bert Kenward , Solarflare linux maintainers , Artem Bityutskiy , Miquel Raynal , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Joern Engel , Greg Kroah-Hartman , Kyungmin Park , netdev@vger.kernel.org, Paul Mackerras , Benjamin Herrenschmidt , Edward Cree , Robert Jarzmik MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Some fields are not used by MTD drivers, users or core code. Moreover, those fields are not documented, so get rid of them to avoid any confusion. Signed-off-by: Boris Brezillon Reviewed-by: Richard Weinberger --- include/linux/mtd/mtd.h | 5 ----- 1 file changed, 5 deletions(-) diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 205ededccc60..2a407dc9beaa 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -48,14 +48,9 @@ struct erase_info { uint64_t addr; uint64_t len; uint64_t fail_addr; - u_long time; - u_long retries; - unsigned dev; - unsigned cell; void (*callback) (struct erase_info *self); u_long priv; u_char state; - struct erase_info *next; }; struct mtd_erase_region_info { From patchwork Mon Feb 12 21:03:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 872527 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2001:8b0:10b:1236::1; 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Mon, 12 Feb 2018 22:03:26 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org Subject: [PATCH 3/5] mtd: Stop assuming mtd_erase() is asynchronous Date: Mon, 12 Feb 2018 22:03:09 +0100 Message-Id: <20180212210311.23244-4-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180212210311.23244-1-boris.brezillon@bootlin.com> References: <20180212210311.23244-1-boris.brezillon@bootlin.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Bert Kenward , Solarflare linux maintainers , Artem Bityutskiy , Miquel Raynal , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Joern Engel , Greg Kroah-Hartman , Kyungmin Park , netdev@vger.kernel.org, Paul Mackerras , Benjamin Herrenschmidt , Edward Cree , Robert Jarzmik MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org None of the mtd->_erase() implementations work in an asynchronous manner, so let's simplify MTD users that call mtd_erase(). All they need to do is check the value returned by mtd_erase() and assume that != 0 means failure. Signed-off-by: Boris Brezillon --- drivers/mtd/devices/bcm47xxsflash.c | 3 -- drivers/mtd/ftl.c | 51 ++++---------------- drivers/mtd/inftlmount.c | 5 +- drivers/mtd/mtdblock.c | 20 -------- drivers/mtd/mtdchar.c | 33 +------------ drivers/mtd/mtdconcat.c | 48 ++----------------- drivers/mtd/mtdcore.c | 8 ++-- drivers/mtd/mtdoops.c | 19 -------- drivers/mtd/mtdpart.c | 2 - drivers/mtd/mtdswap.c | 32 ------------- drivers/mtd/nftlmount.c | 4 +- drivers/mtd/rfd_ftl.c | 92 +++++++++++-------------------------- drivers/mtd/sm_ftl.c | 18 -------- drivers/mtd/sm_ftl.h | 4 -- drivers/mtd/tests/mtd_test.c | 4 -- drivers/mtd/tests/speedtest.c | 6 --- drivers/mtd/ubi/io.c | 35 -------------- fs/jffs2/erase.c | 36 ++------------- include/linux/mtd/mtd.h | 2 - 19 files changed, 52 insertions(+), 370 deletions(-) diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c index e2bd81817df4..6b84947cfbea 100644 --- a/drivers/mtd/devices/bcm47xxsflash.c +++ b/drivers/mtd/devices/bcm47xxsflash.c @@ -95,9 +95,6 @@ static int bcm47xxsflash_erase(struct mtd_info *mtd, struct erase_info *erase) else erase->state = MTD_ERASE_DONE; - if (erase->callback) - erase->callback(erase); - return err; } diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index 664d206a4cbe..fcf9907e7987 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -140,12 +140,6 @@ typedef struct partition_t { #define XFER_PREPARED 0x03 #define XFER_FAILED 0x04 -/*====================================================================*/ - - -static void ftl_erase_callback(struct erase_info *done); - - /*====================================================================== Scan_header() checks to see if a memory region contains an FTL @@ -349,17 +343,19 @@ static int erase_xfer(partition_t *part, return -ENOMEM; erase->mtd = part->mbd.mtd; - erase->callback = ftl_erase_callback; erase->addr = xfer->Offset; erase->len = 1 << part->header.EraseUnitSize; - erase->priv = (u_long)part; ret = mtd_erase(part->mbd.mtd, erase); + if (!ret) { + xfer->state = XFER_ERASED; + xfer->EraseCount++; + } else { + xfer->state = XFER_FAILED; + pr_notice("ftl_cs: erase failed: err = %d\n", ret); + } - if (!ret) - xfer->EraseCount++; - else - kfree(erase); + kfree(erase); return ret; } /* erase_xfer */ @@ -371,37 +367,6 @@ static int erase_xfer(partition_t *part, ======================================================================*/ -static void ftl_erase_callback(struct erase_info *erase) -{ - partition_t *part; - struct xfer_info_t *xfer; - int i; - - /* Look up the transfer unit */ - part = (partition_t *)(erase->priv); - - for (i = 0; i < part->header.NumTransferUnits; i++) - if (part->XferInfo[i].Offset == erase->addr) break; - - if (i == part->header.NumTransferUnits) { - printk(KERN_NOTICE "ftl_cs: internal error: " - "erase lookup failed!\n"); - return; - } - - xfer = &part->XferInfo[i]; - if (erase->state == MTD_ERASE_DONE) - xfer->state = XFER_ERASED; - else { - xfer->state = XFER_FAILED; - printk(KERN_NOTICE "ftl_cs: erase failed: state = %d\n", - erase->state); - } - - kfree(erase); - -} /* ftl_erase_callback */ - static int prepare_xfer(partition_t *part, int i) { erase_unit_header_t header; diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index 8d6bb189ea8e..0f47be4834d8 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -393,9 +393,10 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) mark only the failed block in the bbt. */ for (physblock = 0; physblock < inftl->EraseSize; physblock += instr->len, instr->addr += instr->len) { - mtd_erase(inftl->mbd.mtd, instr); + int ret; - if (instr->state == MTD_ERASE_FAILED) { + ret = mtd_erase(inftl->mbd.mtd, instr); + if (ret) { printk(KERN_WARNING "INFTL: error while formatting block %d\n", block); goto fail; diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index bb4c14f83c75..7b2b7f651181 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -55,48 +55,28 @@ struct mtdblk_dev { * being written to until a different sector is required. */ -static void erase_callback(struct erase_info *done) -{ - wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; - wake_up(wait_q); -} - static int erase_write (struct mtd_info *mtd, unsigned long pos, int len, const char *buf) { struct erase_info erase; - DECLARE_WAITQUEUE(wait, current); - wait_queue_head_t wait_q; size_t retlen; int ret; /* * First, let's erase the flash block. */ - - init_waitqueue_head(&wait_q); erase.mtd = mtd; - erase.callback = erase_callback; erase.addr = pos; erase.len = len; - erase.priv = (u_long)&wait_q; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&wait_q, &wait); ret = mtd_erase(mtd, &erase); if (ret) { - set_current_state(TASK_RUNNING); - remove_wait_queue(&wait_q, &wait); printk (KERN_WARNING "mtdblock: erase of region [0x%lx, 0x%x] " "on \"%s\" failed\n", pos, len, mtd->name); return ret; } - schedule(); /* Wait for erase to finish. */ - remove_wait_queue(&wait_q, &wait); - /* * Next, write the data to flash. */ diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index de8c902059b8..2beb22dd6bbb 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -324,10 +324,6 @@ static ssize_t mtdchar_write(struct file *file, const char __user *buf, size_t c IOCTL calls for getting device parameters. ======================================================================*/ -static void mtdchar_erase_callback (struct erase_info *instr) -{ - wake_up((wait_queue_head_t *)instr->priv); -} static int otp_select_filemode(struct mtd_file_info *mfi, int mode) { @@ -709,11 +705,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) if (!erase) ret = -ENOMEM; else { - wait_queue_head_t waitq; - DECLARE_WAITQUEUE(wait, current); - - init_waitqueue_head(&waitq); - if (cmd == MEMERASE64) { struct erase_info_user64 einfo64; @@ -736,30 +727,8 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) erase->len = einfo32.length; } erase->mtd = mtd; - erase->callback = mtdchar_erase_callback; - erase->priv = (unsigned long)&waitq; - - /* - FIXME: Allow INTERRUPTIBLE. Which means - not having the wait_queue head on the stack. - - If the wq_head is on the stack, and we - leave because we got interrupted, then the - wq_head is no longer there when the - callback routine tries to wake us up. - */ + ret = mtd_erase(mtd, erase); - if (!ret) { - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&waitq, &wait); - if (erase->state != MTD_ERASE_DONE && - erase->state != MTD_ERASE_FAILED) - schedule(); - remove_wait_queue(&waitq, &wait); - set_current_state(TASK_RUNNING); - - ret = (erase->state == MTD_ERASE_FAILED)?-EIO:0; - } kfree(erase); } break; diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 60bf53df5454..caa09bf6e572 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -333,45 +333,6 @@ concat_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) return -EINVAL; } -static void concat_erase_callback(struct erase_info *instr) -{ - wake_up((wait_queue_head_t *) instr->priv); -} - -static int concat_dev_erase(struct mtd_info *mtd, struct erase_info *erase) -{ - int err; - wait_queue_head_t waitq; - DECLARE_WAITQUEUE(wait, current); - - /* - * This code was stol^H^H^H^Hinspired by mtdchar.c - */ - init_waitqueue_head(&waitq); - - erase->mtd = mtd; - erase->callback = concat_erase_callback; - erase->priv = (unsigned long) &waitq; - - /* - * FIXME: Allow INTERRUPTIBLE. Which means - * not having the wait_queue head on the stack. - */ - err = mtd_erase(mtd, erase); - if (!err) { - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&waitq, &wait); - if (erase->state != MTD_ERASE_DONE - && erase->state != MTD_ERASE_FAILED) - schedule(); - remove_wait_queue(&waitq, &wait); - set_current_state(TASK_RUNNING); - - err = (erase->state == MTD_ERASE_FAILED) ? -EIO : 0; - } - return err; -} - static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) { struct mtd_concat *concat = CONCAT(mtd); @@ -466,7 +427,8 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) erase->len = length; length -= erase->len; - if ((err = concat_dev_erase(subdev, erase))) { + erase->mtd = subdev; + if ((err = mtd_erase(subdev, erase))) { /* sanity check: should never happen since * block alignment has been checked above */ BUG_ON(err == -EINVAL); @@ -487,12 +449,8 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) } instr->state = erase->state; kfree(erase); - if (err) - return err; - if (instr->callback) - instr->callback(instr); - return 0; + return err; } static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index c87859ff338b..f92ad02959eb 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -945,11 +945,9 @@ void __put_mtd_device(struct mtd_info *mtd) EXPORT_SYMBOL_GPL(__put_mtd_device); /* - * Erase is an asynchronous operation. Device drivers are supposed - * to call instr->callback() whenever the operation completes, even - * if it completes with a failure. - * Callers are supposed to pass a callback function and wait for it - * to be called before writing to the block. + * Erase is an synchronous operation. Device drivers are epected to return a + * negative error code if the operation failed and update instr->fail_addr + * to point the portion that was not properly erased. */ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) { diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 97bb8f6304d4..028ded59297b 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -84,12 +84,6 @@ static int page_is_used(struct mtdoops_context *cxt, int page) return test_bit(page, cxt->oops_page_used); } -static void mtdoops_erase_callback(struct erase_info *done) -{ - wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; - wake_up(wait_q); -} - static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) { struct mtd_info *mtd = cxt->mtd; @@ -97,34 +91,21 @@ static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) u32 start_page = start_page_offset / record_size; u32 erase_pages = mtd->erasesize / record_size; struct erase_info erase; - DECLARE_WAITQUEUE(wait, current); - wait_queue_head_t wait_q; int ret; int page; - init_waitqueue_head(&wait_q); erase.mtd = mtd; - erase.callback = mtdoops_erase_callback; erase.addr = offset; erase.len = mtd->erasesize; - erase.priv = (u_long)&wait_q; - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&wait_q, &wait); ret = mtd_erase(mtd, &erase); if (ret) { - set_current_state(TASK_RUNNING); - remove_wait_queue(&wait_q, &wait); printk(KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] on \"%s\" failed\n", (unsigned long long)erase.addr, (unsigned long long)erase.len, mtddev); return ret; } - schedule(); /* Wait for erase to finish. */ - remove_wait_queue(&wait_q, &wait); - /* Mark pages as unused */ for (page = start_page; page < start_page + erase_pages; page++) mark_page_unused(cxt, page); diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 76cd21d1171b..ae1206633d9d 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -222,8 +222,6 @@ void mtd_erase_callback(struct erase_info *instr) instr->fail_addr -= part->offset; instr->addr -= part->offset; } - if (instr->callback) - instr->callback(instr); } EXPORT_SYMBOL_GPL(mtd_erase_callback); diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 7eb0e1f4f980..d390324d102e 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -536,18 +536,10 @@ static void mtdswap_store_eb(struct mtdswap_dev *d, struct swap_eb *eb) mtdswap_rb_add(d, eb, MTDSWAP_HIFRAG); } - -static void mtdswap_erase_callback(struct erase_info *done) -{ - wait_queue_head_t *wait_q = (wait_queue_head_t *)done->priv; - wake_up(wait_q); -} - static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb) { struct mtd_info *mtd = d->mtd; struct erase_info erase; - wait_queue_head_t wq; unsigned int retries = 0; int ret; @@ -556,14 +548,11 @@ static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb) d->max_erase_count = eb->erase_count; retry: - init_waitqueue_head(&wq); memset(&erase, 0, sizeof(struct erase_info)); erase.mtd = mtd; - erase.callback = mtdswap_erase_callback; erase.addr = mtdswap_eb_offset(d, eb); erase.len = mtd->erasesize; - erase.priv = (u_long)&wq; ret = mtd_erase(mtd, &erase); if (ret) { @@ -582,27 +571,6 @@ static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb) return -EIO; } - ret = wait_event_interruptible(wq, erase.state == MTD_ERASE_DONE || - erase.state == MTD_ERASE_FAILED); - if (ret) { - dev_err(d->dev, "Interrupted erase block %#llx erasure on %s\n", - erase.addr, mtd->name); - return -EINTR; - } - - if (erase.state == MTD_ERASE_FAILED) { - if (retries++ < MTDSWAP_ERASE_RETRIES) { - dev_warn(d->dev, - "erase of erase block %#llx on %s failed", - erase.addr, mtd->name); - yield(); - goto retry; - } - - mtdswap_handle_badblock(d, eb); - return -EIO; - } - return 0; } diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index 184c8fbfe465..07e122449759 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -331,9 +331,7 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) instr->mtd = nftl->mbd.mtd; instr->addr = block * nftl->EraseSize; instr->len = nftl->EraseSize; - mtd_erase(mtd, instr); - - if (instr->state == MTD_ERASE_FAILED) { + if (mtd_erase(mtd, instr)) { printk("Error while formatting block %d\n", block); goto fail; } diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c index d1cbf26db2c0..4e0b55cd08e2 100644 --- a/drivers/mtd/rfd_ftl.c +++ b/drivers/mtd/rfd_ftl.c @@ -266,91 +266,55 @@ static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *b return 0; } -static void erase_callback(struct erase_info *erase) -{ - struct partition *part; - u16 magic; - int i, rc; - size_t retlen; - - part = (struct partition*)erase->priv; - - i = (u32)erase->addr / part->block_size; - if (i >= part->total_blocks || part->blocks[i].offset != erase->addr || - erase->addr > UINT_MAX) { - printk(KERN_ERR PREFIX "erase callback for unknown offset %llx " - "on '%s'\n", (unsigned long long)erase->addr, part->mbd.mtd->name); - return; - } - - if (erase->state != MTD_ERASE_DONE) { - printk(KERN_WARNING PREFIX "erase failed at 0x%llx on '%s', " - "state %d\n", (unsigned long long)erase->addr, - part->mbd.mtd->name, erase->state); - - part->blocks[i].state = BLOCK_FAILED; - part->blocks[i].free_sectors = 0; - part->blocks[i].used_sectors = 0; - - kfree(erase); - - return; - } - - magic = cpu_to_le16(RFD_MAGIC); - - part->blocks[i].state = BLOCK_ERASED; - part->blocks[i].free_sectors = part->data_sectors_per_block; - part->blocks[i].used_sectors = 0; - part->blocks[i].erases++; - - rc = mtd_write(part->mbd.mtd, part->blocks[i].offset, sizeof(magic), - &retlen, (u_char *)&magic); - - if (!rc && retlen != sizeof(magic)) - rc = -EIO; - - if (rc) { - printk(KERN_ERR PREFIX "'%s': unable to write RFD " - "header at 0x%lx\n", - part->mbd.mtd->name, - part->blocks[i].offset); - part->blocks[i].state = BLOCK_FAILED; - } - else - part->blocks[i].state = BLOCK_OK; - - kfree(erase); -} - static int erase_block(struct partition *part, int block) { struct erase_info *erase; - int rc = -ENOMEM; + int rc; erase = kmalloc(sizeof(struct erase_info), GFP_KERNEL); if (!erase) - goto err; + return -ENOMEM; erase->mtd = part->mbd.mtd; - erase->callback = erase_callback; erase->addr = part->blocks[block].offset; erase->len = part->block_size; - erase->priv = (u_long)part; part->blocks[block].state = BLOCK_ERASING; part->blocks[block].free_sectors = 0; rc = mtd_erase(part->mbd.mtd, erase); - if (rc) { printk(KERN_ERR PREFIX "erase of region %llx,%llx on '%s' " "failed\n", (unsigned long long)erase->addr, (unsigned long long)erase->len, part->mbd.mtd->name); - kfree(erase); + part->blocks[block].state = BLOCK_FAILED; + part->blocks[block].free_sectors = 0; + part->blocks[block].used_sectors = 0; + } else { + u16 magic = cpu_to_le16(RFD_MAGIC); + size_t retlen; + + part->blocks[block].state = BLOCK_ERASED; + part->blocks[block].free_sectors = part->data_sectors_per_block; + part->blocks[block].used_sectors = 0; + part->blocks[block].erases++; + + rc = mtd_write(part->mbd.mtd, part->blocks[block].offset, + sizeof(magic), &retlen, (u_char *)&magic); + if (!rc && retlen != sizeof(magic)) + rc = -EIO; + + if (rc) { + pr_err(PREFIX "'%s': unable to write RFD header at 0x%lx\n", + part->mbd.mtd->name, part->blocks[block].offset); + part->blocks[block].state = BLOCK_FAILED; + } else { + part->blocks[block].state = BLOCK_OK; + } } -err: + kfree(erase); + return rc; } diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index 4237c7cebf02..c11156f9d96f 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -461,10 +461,8 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, struct erase_info erase; erase.mtd = mtd; - erase.callback = sm_erase_callback; erase.addr = sm_mkoffset(ftl, zone_num, block, 0); erase.len = ftl->block_size; - erase.priv = (u_long)ftl; if (ftl->unstable) return -EIO; @@ -482,15 +480,6 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, goto error; } - if (erase.state == MTD_ERASE_PENDING) - wait_for_completion(&ftl->erase_completion); - - if (erase.state != MTD_ERASE_DONE) { - sm_printk("erase of block %d in zone %d failed after wait", - block, zone_num); - goto error; - } - if (put_free) kfifo_in(&zone->free_sectors, (const unsigned char *)&block, sizeof(block)); @@ -501,12 +490,6 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, return -EIO; } -static void sm_erase_callback(struct erase_info *self) -{ - struct sm_ftl *ftl = (struct sm_ftl *)self->priv; - complete(&ftl->erase_completion); -} - /* Thoroughly test that block is valid. */ static int sm_check_block(struct sm_ftl *ftl, int zone, int block) { @@ -1141,7 +1124,6 @@ static void sm_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) mutex_init(&ftl->mutex); timer_setup(&ftl->timer, sm_cache_flush_timer, 0); INIT_WORK(&ftl->flush_work, sm_cache_flush_work); - init_completion(&ftl->erase_completion); /* Read media information */ if (sm_get_media_info(ftl, mtd)) { diff --git a/drivers/mtd/sm_ftl.h b/drivers/mtd/sm_ftl.h index 43bb7300785b..0a46d75cdc6a 100644 --- a/drivers/mtd/sm_ftl.h +++ b/drivers/mtd/sm_ftl.h @@ -53,9 +53,6 @@ struct sm_ftl { struct work_struct flush_work; struct timer_list timer; - /* Async erase stuff */ - struct completion erase_completion; - /* Geometry stuff */ int heads; int sectors; @@ -86,7 +83,6 @@ struct chs_entry { printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__) -static void sm_erase_callback(struct erase_info *self); static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, int put_free); static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block); diff --git a/drivers/mtd/tests/mtd_test.c b/drivers/mtd/tests/mtd_test.c index 3d0b8b5c1a53..0ac625e8f798 100644 --- a/drivers/mtd/tests/mtd_test.c +++ b/drivers/mtd/tests/mtd_test.c @@ -24,10 +24,6 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum) return err; } - if (ei.state == MTD_ERASE_FAILED) { - pr_info("some erase error occurred at EB %d\n", ebnum); - return -EIO; - } return 0; } diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c index 0b89418a0888..f8e5dc11f943 100644 --- a/drivers/mtd/tests/speedtest.c +++ b/drivers/mtd/tests/speedtest.c @@ -70,12 +70,6 @@ static int multiblock_erase(int ebnum, int blocks) return err; } - if (ei.state == MTD_ERASE_FAILED) { - pr_err("some erase error occurred at EB %d," - "blocks %d\n", ebnum, blocks); - return -EIO; - } - return 0; } diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 8290432017ce..8843d26837b2 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -308,18 +308,6 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset, return err; } -/** - * erase_callback - MTD erasure call-back. - * @ei: MTD erase information object. - * - * Note, even though MTD erase interface is asynchronous, all the current - * implementations are synchronous anyway. - */ -static void erase_callback(struct erase_info *ei) -{ - wake_up_interruptible((wait_queue_head_t *)ei->priv); -} - /** * do_sync_erase - synchronously erase a physical eraseblock. * @ubi: UBI device description object @@ -333,7 +321,6 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum) { int err, retries = 0; struct erase_info ei; - wait_queue_head_t wq; dbg_io("erase PEB %d", pnum); ubi_assert(pnum >= 0 && pnum < ubi->peb_count); @@ -344,14 +331,11 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum) } retry: - init_waitqueue_head(&wq); memset(&ei, 0, sizeof(struct erase_info)); ei.mtd = ubi->mtd; ei.addr = (loff_t)pnum * ubi->peb_size; ei.len = ubi->peb_size; - ei.callback = erase_callback; - ei.priv = (unsigned long)&wq; err = mtd_erase(ubi->mtd, &ei); if (err) { @@ -366,25 +350,6 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum) return err; } - err = wait_event_interruptible(wq, ei.state == MTD_ERASE_DONE || - ei.state == MTD_ERASE_FAILED); - if (err) { - ubi_err(ubi, "interrupted PEB %d erasure", pnum); - return -EINTR; - } - - if (ei.state == MTD_ERASE_FAILED) { - if (retries++ < UBI_IO_RETRIES) { - ubi_warn(ubi, "error while erasing PEB %d, retry", - pnum); - yield(); - goto retry; - } - ubi_err(ubi, "cannot erase PEB %d", pnum); - dump_stack(); - return -EIO; - } - err = ubi_self_check_all_ff(ubi, pnum, 0, ubi->peb_size); if (err) return err; diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index 4a6cf289be24..09bb6c00b869 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -21,14 +21,6 @@ #include #include "nodelist.h" -struct erase_priv_struct { - struct jffs2_eraseblock *jeb; - struct jffs2_sb_info *c; -}; - -#ifndef __ECOS -static void jffs2_erase_callback(struct erase_info *); -#endif static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset); static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); @@ -51,7 +43,7 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, jffs2_dbg(1, "%s(): erase block %#08x (range %#08x-%#08x)\n", __func__, jeb->offset, jeb->offset, jeb->offset + c->sector_size); - instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL); + instr = kmalloc(sizeof(struct erase_info), GFP_KERNEL); if (!instr) { pr_warn("kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n"); mutex_lock(&c->erase_free_sem); @@ -70,15 +62,13 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, instr->mtd = c->mtd; instr->addr = jeb->offset; instr->len = c->sector_size; - instr->callback = jffs2_erase_callback; - instr->priv = (unsigned long)(&instr[1]); - - ((struct erase_priv_struct *)instr->priv)->jeb = jeb; - ((struct erase_priv_struct *)instr->priv)->c = c; ret = mtd_erase(c->mtd, instr); - if (!ret) + if (!ret) { + jffs2_erase_succeeded(c, jeb); + kfree(instr); return; + } bad_offset = instr->fail_addr; kfree(instr); @@ -214,22 +204,6 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock wake_up(&c->erase_wait); } -#ifndef __ECOS -static void jffs2_erase_callback(struct erase_info *instr) -{ - struct erase_priv_struct *priv = (void *)instr->priv; - - if(instr->state != MTD_ERASE_DONE) { - pr_warn("Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n", - (unsigned long long)instr->addr, instr->state); - jffs2_erase_failed(priv->c, priv->jeb, instr->fail_addr); - } else { - jffs2_erase_succeeded(priv->c, priv->jeb); - } - kfree(instr); -} -#endif /* !__ECOS */ - /* Hmmm. Maybe we should accept the extra space it takes and make this a standard doubly-linked list? */ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c, diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 2a407dc9beaa..5018437d7999 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -48,8 +48,6 @@ struct erase_info { uint64_t addr; uint64_t len; uint64_t fail_addr; - void (*callback) (struct erase_info *self); - u_long priv; u_char state; }; From patchwork Mon Feb 12 21:03:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 872458 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; 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Mon, 12 Feb 2018 22:03:26 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org Subject: [PATCH 4/5] mtd: Unconditionally update ->fail_addr and ->addr in part_erase() Date: Mon, 12 Feb 2018 22:03:10 +0100 Message-Id: <20180212210311.23244-5-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180212210311.23244-1-boris.brezillon@bootlin.com> References: <20180212210311.23244-1-boris.brezillon@bootlin.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Bert Kenward , Solarflare linux maintainers , Artem Bityutskiy , Miquel Raynal , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Joern Engel , Greg Kroah-Hartman , Kyungmin Park , netdev@vger.kernel.org, Paul Mackerras , Benjamin Herrenschmidt , Edward Cree , Robert Jarzmik MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org ->fail_addr and ->addr can be updated no matter the result of parent->_erase(), we just need to remove the code doing the same thing in mtd_erase_callback() to avoid adjusting those fields twice. Note that this can be done because all MTD users have been converted to not pass an erase_info->callback() and are thus only taking the ->addr_fail and ->addr fields into account after part_erase() has returned. While we're at it, get rid of the erase_info->mtd field which was only needed to let mtd_erase_callback() get the partition device back. Signed-off-by: Boris Brezillon --- drivers/mtd/ftl.c | 1 - drivers/mtd/inftlmount.c | 3 --- drivers/mtd/mtdblock.c | 1 - drivers/mtd/mtdchar.c | 1 - drivers/mtd/mtdconcat.c | 1 - drivers/mtd/mtdoops.c | 1 - drivers/mtd/mtdpart.c | 16 ++++------------ drivers/mtd/mtdswap.c | 2 -- drivers/mtd/nand/nand_base.c | 1 - drivers/mtd/nand/nand_bbt.c | 1 - drivers/mtd/nftlmount.c | 1 - drivers/mtd/rfd_ftl.c | 1 - drivers/mtd/sm_ftl.c | 1 - drivers/mtd/tests/mtd_test.c | 1 - drivers/mtd/tests/speedtest.c | 1 - drivers/mtd/ubi/io.c | 1 - fs/jffs2/erase.c | 1 - include/linux/mtd/mtd.h | 3 ++- 18 files changed, 6 insertions(+), 32 deletions(-) diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index fcf9907e7987..0a6adfaec7b5 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -342,7 +342,6 @@ static int erase_xfer(partition_t *part, if (!erase) return -ENOMEM; - erase->mtd = part->mbd.mtd; erase->addr = xfer->Offset; erase->len = 1 << part->header.EraseUnitSize; diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index 0f47be4834d8..aab4f68bd36f 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -208,8 +208,6 @@ static int find_boot_record(struct INFTLrecord *inftl) if (ip->Reserved0 != ip->firstUnit) { struct erase_info *instr = &inftl->instr; - instr->mtd = inftl->mbd.mtd; - /* * Most likely this is using the * undocumented qiuck mount feature. @@ -385,7 +383,6 @@ int INFTL_formatblock(struct INFTLrecord *inftl, int block) _first_? */ /* Use async erase interface, test return code */ - instr->mtd = inftl->mbd.mtd; instr->addr = block * inftl->EraseSize; instr->len = inftl->mbd.mtd->erasesize; /* Erase one physical eraseblock at a time, even though the NAND api diff --git a/drivers/mtd/mtdblock.c b/drivers/mtd/mtdblock.c index 7b2b7f651181..a5b1933c0490 100644 --- a/drivers/mtd/mtdblock.c +++ b/drivers/mtd/mtdblock.c @@ -65,7 +65,6 @@ static int erase_write (struct mtd_info *mtd, unsigned long pos, /* * First, let's erase the flash block. */ - erase.mtd = mtd; erase.addr = pos; erase.len = len; diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 2beb22dd6bbb..c06b33f80e75 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -726,7 +726,6 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg) erase->addr = einfo32.start; erase->len = einfo32.length; } - erase->mtd = mtd; ret = mtd_erase(mtd, erase); kfree(erase); diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index caa09bf6e572..93c47e56d9d8 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -427,7 +427,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) erase->len = length; length -= erase->len; - erase->mtd = subdev; if ((err = mtd_erase(subdev, erase))) { /* sanity check: should never happen since * block alignment has been checked above */ diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c index 028ded59297b..9f25111fd559 100644 --- a/drivers/mtd/mtdoops.c +++ b/drivers/mtd/mtdoops.c @@ -94,7 +94,6 @@ static int mtdoops_erase_block(struct mtdoops_context *cxt, int offset) int ret; int page; - erase.mtd = mtd; erase.addr = offset; erase.len = mtd->erasesize; diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index ae1206633d9d..1c07a6f0dfe5 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -205,23 +205,15 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr) instr->addr += part->offset; ret = part->parent->_erase(part->parent, instr); - if (ret) { - if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN) - instr->fail_addr -= part->offset; - instr->addr -= part->offset; - } + if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN) + instr->fail_addr -= part->offset; + instr->addr -= part->offset; + return ret; } void mtd_erase_callback(struct erase_info *instr) { - if (instr->mtd->_erase == part_erase) { - struct mtd_part *part = mtd_to_part(instr->mtd); - - if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN) - instr->fail_addr -= part->offset; - instr->addr -= part->offset; - } } EXPORT_SYMBOL_GPL(mtd_erase_callback); diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index d390324d102e..7161f8a17f62 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -549,8 +549,6 @@ static int mtdswap_erase_block(struct mtdswap_dev *d, struct swap_eb *eb) retry: memset(&erase, 0, sizeof(struct erase_info)); - - erase.mtd = mtd; erase.addr = mtdswap_eb_offset(d, eb); erase.len = mtd->erasesize; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index e70ca16a5118..16c8bc06975d 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -527,7 +527,6 @@ static int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs) /* Attempt erase before marking OOB */ memset(&einfo, 0, sizeof(einfo)); - einfo.mtd = mtd; einfo.addr = ofs; einfo.len = 1ULL << chip->phys_erase_shift; nand_erase_nand(mtd, &einfo, 0); diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c index 36092850be2c..d9f4ceff2568 100644 --- a/drivers/mtd/nand/nand_bbt.c +++ b/drivers/mtd/nand/nand_bbt.c @@ -852,7 +852,6 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf, } memset(&einfo, 0, sizeof(einfo)); - einfo.mtd = mtd; einfo.addr = to; einfo.len = 1 << this->bbt_erase_shift; res = nand_erase_nand(mtd, &einfo, 1); diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index 07e122449759..d8f6dba01c87 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -328,7 +328,6 @@ int NFTL_formatblock(struct NFTLrecord *nftl, int block) memset(instr, 0, sizeof(struct erase_info)); /* XXX: use async erase interface, XXX: test return code */ - instr->mtd = nftl->mbd.mtd; instr->addr = block * nftl->EraseSize; instr->len = nftl->EraseSize; if (mtd_erase(mtd, instr)) { diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c index 4e0b55cd08e2..df27f24ce0fa 100644 --- a/drivers/mtd/rfd_ftl.c +++ b/drivers/mtd/rfd_ftl.c @@ -275,7 +275,6 @@ static int erase_block(struct partition *part, int block) if (!erase) return -ENOMEM; - erase->mtd = part->mbd.mtd; erase->addr = part->blocks[block].offset; erase->len = part->block_size; diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index c11156f9d96f..72740ede9f05 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -460,7 +460,6 @@ static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, struct mtd_info *mtd = ftl->trans->mtd; struct erase_info erase; - erase.mtd = mtd; erase.addr = sm_mkoffset(ftl, zone_num, block, 0); erase.len = ftl->block_size; diff --git a/drivers/mtd/tests/mtd_test.c b/drivers/mtd/tests/mtd_test.c index 0ac625e8f798..c84250beffdc 100644 --- a/drivers/mtd/tests/mtd_test.c +++ b/drivers/mtd/tests/mtd_test.c @@ -14,7 +14,6 @@ int mtdtest_erase_eraseblock(struct mtd_info *mtd, unsigned int ebnum) loff_t addr = (loff_t)ebnum * mtd->erasesize; memset(&ei, 0, sizeof(struct erase_info)); - ei.mtd = mtd; ei.addr = addr; ei.len = mtd->erasesize; diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c index f8e5dc11f943..20edb3b49c77 100644 --- a/drivers/mtd/tests/speedtest.c +++ b/drivers/mtd/tests/speedtest.c @@ -59,7 +59,6 @@ static int multiblock_erase(int ebnum, int blocks) loff_t addr = (loff_t)ebnum * mtd->erasesize; memset(&ei, 0, sizeof(struct erase_info)); - ei.mtd = mtd; ei.addr = addr; ei.len = mtd->erasesize * blocks; diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 8843d26837b2..0e3a76a9e2f8 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -333,7 +333,6 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum) retry: memset(&ei, 0, sizeof(struct erase_info)); - ei.mtd = ubi->mtd; ei.addr = (loff_t)pnum * ubi->peb_size; ei.len = ubi->peb_size; diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index 09bb6c00b869..83b8f06b4a64 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -59,7 +59,6 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, memset(instr, 0, sizeof(*instr)); - instr->mtd = c->mtd; instr->addr = jeb->offset; instr->len = c->sector_size; diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 5018437d7999..4cbb7f555244 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -38,13 +38,14 @@ #define MTD_FAIL_ADDR_UNKNOWN -1LL +struct mtd_info; + /* * If the erase fails, fail_addr might indicate exactly which block failed. If * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level * or was not specific to any particular block. */ struct erase_info { - struct mtd_info *mtd; uint64_t addr; uint64_t len; uint64_t fail_addr; From patchwork Mon Feb 12 21:03:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 872405 X-Patchwork-Delegate: boris.brezillon@free-electrons.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.infradead.org (client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qdz0VGAC"; dkim=pass (2048-bit key; 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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1elLHJ-0007Qv-Pf; Mon, 12 Feb 2018 21:04:45 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1elLGb-0006ug-0O for linux-mtd@lists.infradead.org; Mon, 12 Feb 2018 21:04:18 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id F08EF207CC; Mon, 12 Feb 2018 22:03:37 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,SHORTCIRCUIT, URIBL_BLOCKED shortcircuit=ham autolearn=disabled version=3.4.0 Received: from localhost.localdomain (91-160-177-164.subs.proxad.net [91.160.177.164]) by mail.free-electrons.com (Postfix) with ESMTPSA id 60AFA207CD; Mon, 12 Feb 2018 22:03:27 +0100 (CET) From: Boris Brezillon To: David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org Subject: [PATCH 5/5] mtd: Stop updating erase_info->state and calling mtd_erase_callback() Date: Mon, 12 Feb 2018 22:03:11 +0100 Message-Id: <20180212210311.23244-6-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180212210311.23244-1-boris.brezillon@bootlin.com> References: <20180212210311.23244-1-boris.brezillon@bootlin.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, Bert Kenward , Solarflare linux maintainers , Artem Bityutskiy , Miquel Raynal , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Joern Engel , Greg Kroah-Hartman , Kyungmin Park , netdev@vger.kernel.org, Paul Mackerras , Benjamin Herrenschmidt , Edward Cree , Robert Jarzmik MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org MTD users are no longer checking erase_info->state to determine if the erase operation failed or succeeded. Moreover, mtd_erase_callback() is now a NOP. We can safely get rid of all mtd_erase_callback() calls and all erase_info->state assignments. While at it, get rid of the erase_info->state field, all MTD_ERASE_XXX definitions and the mtd_erase_callback() function. Signed-off-by: Boris Brezillon Reviewed-by: Richard Weinberger Reviewed-by: Miquel Raynal Acked-by: Bert Kenward --- drivers/mtd/chips/cfi_cmdset_0001.c | 16 ++-------------- drivers/mtd/chips/cfi_cmdset_0002.c | 26 +++----------------------- drivers/mtd/chips/cfi_cmdset_0020.c | 3 --- drivers/mtd/chips/map_ram.c | 2 -- drivers/mtd/devices/bcm47xxsflash.c | 9 +-------- drivers/mtd/devices/block2mtd.c | 7 +------ drivers/mtd/devices/docg3.c | 16 ++-------------- drivers/mtd/devices/lart.c | 4 ---- drivers/mtd/devices/mtd_dataflash.c | 4 ---- drivers/mtd/devices/mtdram.c | 2 -- drivers/mtd/devices/phram.c | 2 -- drivers/mtd/devices/pmc551.c | 2 -- drivers/mtd/devices/powernv_flash.c | 11 ++--------- drivers/mtd/devices/slram.c | 2 -- drivers/mtd/devices/spear_smi.c | 3 --- drivers/mtd/devices/sst25l.c | 3 --- drivers/mtd/devices/st_spi_fsm.c | 4 ---- drivers/mtd/lpddr/lpddr2_nvm.c | 10 ++-------- drivers/mtd/lpddr/lpddr_cmds.c | 2 -- drivers/mtd/mtdconcat.c | 1 - drivers/mtd/mtdcore.c | 6 ++---- drivers/mtd/mtdpart.c | 5 ----- drivers/mtd/nand/nand_base.c | 15 +++------------ drivers/mtd/onenand/onenand_base.c | 17 ----------------- drivers/mtd/spi-nor/spi-nor.c | 3 --- drivers/mtd/ubi/gluebi.c | 3 --- drivers/net/ethernet/sfc/falcon/mtd.c | 11 +---------- drivers/net/ethernet/sfc/mtd.c | 11 +---------- drivers/staging/goldfish/goldfish_nand.c | 3 --- include/linux/mtd/mtd.h | 9 --------- 30 files changed, 20 insertions(+), 192 deletions(-) diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 5e1b68cbcd0a..d4c07b85f18e 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -1993,20 +1993,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, static int cfi_intelext_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) { - unsigned long ofs, len; - int ret; - - ofs = instr->addr; - len = instr->len; - - ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL); - if (ret) - return ret; - - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - - return 0; + return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr, + instr->len, NULL); } static void cfi_intelext_sync (struct mtd_info *mtd) diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 56aa6b75213d..668e2cbc155b 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2415,20 +2415,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip, static int cfi_amdstd_erase_varsize(struct mtd_info *mtd, struct erase_info *instr) { - unsigned long ofs, len; - int ret; - - ofs = instr->addr; - len = instr->len; - - ret = cfi_varsize_frob(mtd, do_erase_oneblock, ofs, len, NULL); - if (ret) - return ret; - - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - - return 0; + return cfi_varsize_frob(mtd, do_erase_oneblock, instr->addr, + instr->len, NULL); } @@ -2436,7 +2424,6 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr) { struct map_info *map = mtd->priv; struct cfi_private *cfi = map->fldrv_priv; - int ret = 0; if (instr->addr != 0) return -EINVAL; @@ -2444,14 +2431,7 @@ static int cfi_amdstd_erase_chip(struct mtd_info *mtd, struct erase_info *instr) if (instr->len != mtd->size) return -EINVAL; - ret = do_erase_chip(map, &cfi->chips[0]); - if (ret) - return ret; - - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - - return 0; + return do_erase_chip(map, &cfi->chips[0]); } static int do_atmel_lock(struct map_info *map, struct flchip *chip, diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index 7d342965f392..7b7658a05036 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -965,9 +965,6 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd, } } - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return 0; } diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index 1cd0fff0e940..c37fce926864 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -131,8 +131,6 @@ static int mapram_erase (struct mtd_info *mtd, struct erase_info *instr) allff = map_word_ff(map); for (i=0; ilen; i += map_bankwidth(map)) map_write(map, allff, instr->addr + i); - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c index 6b84947cfbea..9baa81b8780c 100644 --- a/drivers/mtd/devices/bcm47xxsflash.c +++ b/drivers/mtd/devices/bcm47xxsflash.c @@ -68,7 +68,6 @@ static int bcm47xxsflash_poll(struct bcm47xxsflash *b47s, int timeout) static int bcm47xxsflash_erase(struct mtd_info *mtd, struct erase_info *erase) { struct bcm47xxsflash *b47s = mtd->priv; - int err; switch (b47s->type) { case BCM47XXSFLASH_TYPE_ST: @@ -89,13 +88,7 @@ static int bcm47xxsflash_erase(struct mtd_info *mtd, struct erase_info *erase) break; } - err = bcm47xxsflash_poll(b47s, HZ); - if (err) - erase->state = MTD_ERASE_FAILED; - else - erase->state = MTD_ERASE_DONE; - - return err; + return bcm47xxsflash_poll(b47s, HZ); } static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len, diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 62fd6905c648..0e741017f189 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -88,17 +88,12 @@ static int block2mtd_erase(struct mtd_info *mtd, struct erase_info *instr) size_t len = instr->len; int err; - instr->state = MTD_ERASING; mutex_lock(&dev->write_mutex); err = _block2mtd_erase(dev, from, len); mutex_unlock(&dev->write_mutex); - if (err) { + if (err) pr_err("erase failed err = %d\n", err); - instr->state = MTD_ERASE_FAILED; - } else - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return err; } diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index a85af236b44d..c594fe5eac08 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1191,39 +1191,27 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info) { struct docg3 *docg3 = mtd->priv; uint64_t len; - int block0, block1, page, ret, ofs = 0; + int block0, block1, page, ret = 0, ofs = 0; doc_dbg("doc_erase(from=%lld, len=%lld\n", info->addr, info->len); - info->state = MTD_ERASE_PENDING; calc_block_sector(info->addr + info->len, &block0, &block1, &page, &ofs, docg3->reliable); - ret = -EINVAL; if (info->addr + info->len > mtd->size || page || ofs) - goto reset_err; + return -EINVAL; - ret = 0; calc_block_sector(info->addr, &block0, &block1, &page, &ofs, docg3->reliable); mutex_lock(&docg3->cascade->lock); doc_set_device_id(docg3, docg3->device_id); doc_set_reliable_mode(docg3); for (len = info->len; !ret && len > 0; len -= mtd->erasesize) { - info->state = MTD_ERASING; ret = doc_erase_block(docg3, block0, block1); block0 += 2; block1 += 2; } mutex_unlock(&docg3->cascade->lock); - if (ret) - goto reset_err; - - info->state = MTD_ERASE_DONE; - return 0; - -reset_err: - info->state = MTD_ERASE_FAILED; return ret; } diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c index 555b94406e0b..3d6c8ffd351f 100644 --- a/drivers/mtd/devices/lart.c +++ b/drivers/mtd/devices/lart.c @@ -415,7 +415,6 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr) { if (!erase_block (addr)) { - instr->state = MTD_ERASE_FAILED; return (-EIO); } @@ -425,9 +424,6 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr) if (addr == mtd->eraseregions[i].offset + (mtd->eraseregions[i].erasesize * mtd->eraseregions[i].numblocks)) i++; } - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return (0); } diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 5dc8bd042cc5..aaaeaae01e1d 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -220,10 +220,6 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr) } mutex_unlock(&priv->lock); - /* Inform MTD subsystem that erase is complete */ - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return 0; } diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index 0bf4aeaf0cb8..efef43c6684b 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -60,8 +60,6 @@ static int ram_erase(struct mtd_info *mtd, struct erase_info *instr) if (check_offs_len(mtd, instr->addr, instr->len)) return -EINVAL; memset((char *)mtd->priv + instr->addr, 0xff, instr->len); - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index 7287696a21f9..a963c88d392d 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -44,8 +44,6 @@ static int phram_erase(struct mtd_info *mtd, struct erase_info *instr) * I don't feel at all ashamed. This kind of thing is possible anyway * with flash, but unlikely. */ - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c index cadea0620cd0..5d842cbca3de 100644 --- a/drivers/mtd/devices/pmc551.c +++ b/drivers/mtd/devices/pmc551.c @@ -184,12 +184,10 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr) } out: - instr->state = MTD_ERASE_DONE; #ifdef CONFIG_MTD_PMC551_DEBUG printk(KERN_DEBUG "pmc551_erase() done\n"); #endif - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c index 26f9feaa5d17..5f383630c16f 100644 --- a/drivers/mtd/devices/powernv_flash.c +++ b/drivers/mtd/devices/powernv_flash.c @@ -175,19 +175,12 @@ static int powernv_flash_erase(struct mtd_info *mtd, struct erase_info *erase) { int rc; - erase->state = MTD_ERASING; - /* todo: register our own notifier to do a true async implementation */ rc = powernv_flash_async_op(mtd, FLASH_OP_ERASE, erase->addr, erase->len, NULL, NULL); - - if (rc) { + if (rc) erase->fail_addr = erase->addr; - erase->state = MTD_ERASE_FAILED; - } else { - erase->state = MTD_ERASE_DONE; - } - mtd_erase_callback(erase); + return rc; } diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index 0ec85f316d24..2f05e1801047 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -88,8 +88,6 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr) * I don't feel at all ashamed. This kind of thing is possible anyway * with flash, but unlikely. */ - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return(0); } diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c index ddf478976013..986f81d2f93e 100644 --- a/drivers/mtd/devices/spear_smi.c +++ b/drivers/mtd/devices/spear_smi.c @@ -518,7 +518,6 @@ static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info) /* preparing the command for flash */ ret = spear_smi_erase_sector(dev, bank, command, 4); if (ret) { - e_info->state = MTD_ERASE_FAILED; mutex_unlock(&flash->lock); return ret; } @@ -527,8 +526,6 @@ static int spear_mtd_erase(struct mtd_info *mtd, struct erase_info *e_info) } mutex_unlock(&flash->lock); - e_info->state = MTD_ERASE_DONE; - mtd_erase_callback(e_info); return 0; } diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c index 5b84d71efb36..1897f33fe3e7 100644 --- a/drivers/mtd/devices/sst25l.c +++ b/drivers/mtd/devices/sst25l.c @@ -195,7 +195,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr) err = sst25l_erase_sector(flash, addr); if (err) { mutex_unlock(&flash->lock); - instr->state = MTD_ERASE_FAILED; dev_err(&flash->spi->dev, "Erase failed\n"); return err; } @@ -205,8 +204,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr) mutex_unlock(&flash->lock); - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 7bc29d725200..b0a8ad3c2c7b 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -1825,13 +1825,9 @@ static int stfsm_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) mutex_unlock(&fsm->lock); - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return 0; out1: - instr->state = MTD_ERASE_FAILED; mutex_unlock(&fsm->lock); return ret; diff --git a/drivers/mtd/lpddr/lpddr2_nvm.c b/drivers/mtd/lpddr/lpddr2_nvm.c index 2342277c9bcb..5d73db2a496d 100644 --- a/drivers/mtd/lpddr/lpddr2_nvm.c +++ b/drivers/mtd/lpddr/lpddr2_nvm.c @@ -380,14 +380,8 @@ static int lpddr2_nvm_write(struct mtd_info *mtd, loff_t start_add, */ static int lpddr2_nvm_erase(struct mtd_info *mtd, struct erase_info *instr) { - int ret = lpddr2_nvm_do_block_op(mtd, instr->addr, instr->len, - LPDDR2_NVM_ERASE); - if (!ret) { - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - } - - return ret; + return lpddr2_nvm_do_block_op(mtd, instr->addr, instr->len, + LPDDR2_NVM_ERASE); } /* diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c index 018c75faadb3..5c5ba3c7c79d 100644 --- a/drivers/mtd/lpddr/lpddr_cmds.c +++ b/drivers/mtd/lpddr/lpddr_cmds.c @@ -693,8 +693,6 @@ static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr) ofs += size; len -= size; } - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; } diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 93c47e56d9d8..6b86d1a73cf2 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -446,7 +446,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) erase->addr = 0; offset += subdev->size; } - instr->state = erase->state; kfree(erase); return err; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index f92ad02959eb..f25d65ea7149 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -961,11 +961,9 @@ int mtd_erase(struct mtd_info *mtd, struct erase_info *instr) if (!(mtd->flags & MTD_WRITEABLE)) return -EROFS; - if (!instr->len) { - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); + if (!instr->len) return 0; - } + ledtrig_mtd_activity(); return mtd->_erase(mtd, instr); } diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 1c07a6f0dfe5..85fea8ea3423 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -212,11 +212,6 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr) return ret; } -void mtd_erase_callback(struct erase_info *instr) -{ -} -EXPORT_SYMBOL_GPL(mtd_erase_callback); - static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) { struct mtd_part *part = mtd_to_part(mtd); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 16c8bc06975d..13dd67106859 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -4604,22 +4604,20 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, if (nand_check_wp(mtd)) { pr_debug("%s: device is write protected!\n", __func__); - instr->state = MTD_ERASE_FAILED; + ret = -EIO; goto erase_exit; } /* Loop through the pages */ len = instr->len; - instr->state = MTD_ERASING; - while (len) { /* Check if we have a bad block, we do not erase bad blocks! */ if (nand_block_checkbad(mtd, ((loff_t) page) << chip->page_shift, allowbbt)) { pr_warn("%s: attempt to erase a bad block at page 0x%08x\n", __func__, page); - instr->state = MTD_ERASE_FAILED; + ret = -EIO; goto erase_exit; } @@ -4637,7 +4635,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, if (status) { pr_debug("%s: failed erase, page 0x%08x\n", __func__, page); - instr->state = MTD_ERASE_FAILED; + ret = -EIO; instr->fail_addr = ((loff_t)page << chip->page_shift); goto erase_exit; @@ -4654,20 +4652,13 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, chip->select_chip(mtd, chipnr); } } - instr->state = MTD_ERASE_DONE; erase_exit: - ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; - /* Deselect and wake up anyone waiting on the device */ chip->select_chip(mtd, -1); nand_release_device(mtd); - /* Do call back function */ - if (!ret) - mtd_erase_callback(instr); - /* Return more or less happy */ return ret; } diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 979f4031f23c..8d19b78777b5 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -2143,7 +2143,6 @@ static int onenand_multiblock_erase_verify(struct mtd_info *mtd, if (ret) { printk(KERN_ERR "%s: Failed verify, block %d\n", __func__, onenand_block(this, addr)); - instr->state = MTD_ERASE_FAILED; instr->fail_addr = addr; return -1; } @@ -2172,8 +2171,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, int ret = 0; int bdry_block = 0; - instr->state = MTD_ERASING; - if (ONENAND_IS_DDP(this)) { loff_t bdry_addr = this->chipsize >> 1; if (addr < bdry_addr && (addr + len) > bdry_addr) @@ -2187,7 +2184,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, printk(KERN_WARNING "%s: attempt to erase a bad block " "at addr 0x%012llx\n", __func__, (unsigned long long) addr); - instr->state = MTD_ERASE_FAILED; return -EIO; } len -= block_size; @@ -2227,7 +2223,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, printk(KERN_ERR "%s: Failed multiblock erase, " "block %d\n", __func__, onenand_block(this, addr)); - instr->state = MTD_ERASE_FAILED; instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; return -EIO; } @@ -2247,7 +2242,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, if (ret) { printk(KERN_ERR "%s: Failed erase, block %d\n", __func__, onenand_block(this, addr)); - instr->state = MTD_ERASE_FAILED; instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; return -EIO; } @@ -2259,7 +2253,6 @@ static int onenand_multiblock_erase(struct mtd_info *mtd, /* verify */ verify_instr.len = eb_count * block_size; if (onenand_multiblock_erase_verify(mtd, &verify_instr)) { - instr->state = verify_instr.state; instr->fail_addr = verify_instr.fail_addr; return -EIO; } @@ -2294,8 +2287,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd, region_end = region->offset + region->erasesize * region->numblocks; } - instr->state = MTD_ERASING; - /* Loop through the blocks */ while (len) { cond_resched(); @@ -2305,7 +2296,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd, printk(KERN_WARNING "%s: attempt to erase a bad block " "at addr 0x%012llx\n", __func__, (unsigned long long) addr); - instr->state = MTD_ERASE_FAILED; return -EIO; } @@ -2318,7 +2308,6 @@ static int onenand_block_by_block_erase(struct mtd_info *mtd, if (ret) { printk(KERN_ERR "%s: Failed erase, block %d\n", __func__, onenand_block(this, addr)); - instr->state = MTD_ERASE_FAILED; instr->fail_addr = addr; return -EIO; } @@ -2407,12 +2396,6 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) /* Deselect and wake up anyone waiting on the device */ onenand_release_device(mtd); - /* Do call back function */ - if (!ret) { - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - } - return ret; } diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index d445a4d3b770..5bfa36e95f35 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -560,9 +560,6 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) erase_err: spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE); - instr->state = ret ? MTD_ERASE_FAILED : MTD_ERASE_DONE; - mtd_erase_callback(instr); - return ret; } diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c index 1cb287ec32ad..6b655a53113b 100644 --- a/drivers/mtd/ubi/gluebi.c +++ b/drivers/mtd/ubi/gluebi.c @@ -272,12 +272,9 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr) if (err) goto out_err; - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); return 0; out_err: - instr->state = MTD_ERASE_FAILED; instr->fail_addr = (long long)lnum * mtd->erasesize; return err; } diff --git a/drivers/net/ethernet/sfc/falcon/mtd.c b/drivers/net/ethernet/sfc/falcon/mtd.c index cde593cb1052..2d67e4621a3d 100644 --- a/drivers/net/ethernet/sfc/falcon/mtd.c +++ b/drivers/net/ethernet/sfc/falcon/mtd.c @@ -24,17 +24,8 @@ static int ef4_mtd_erase(struct mtd_info *mtd, struct erase_info *erase) { struct ef4_nic *efx = mtd->priv; - int rc; - rc = efx->type->mtd_erase(mtd, erase->addr, erase->len); - if (rc == 0) { - erase->state = MTD_ERASE_DONE; - } else { - erase->state = MTD_ERASE_FAILED; - erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN; - } - mtd_erase_callback(erase); - return rc; + return efx->type->mtd_erase(mtd, erase->addr, erase->len); } static void ef4_mtd_sync(struct mtd_info *mtd) diff --git a/drivers/net/ethernet/sfc/mtd.c b/drivers/net/ethernet/sfc/mtd.c index a77a8bd2dd70..4ac30b6e5dab 100644 --- a/drivers/net/ethernet/sfc/mtd.c +++ b/drivers/net/ethernet/sfc/mtd.c @@ -24,17 +24,8 @@ static int efx_mtd_erase(struct mtd_info *mtd, struct erase_info *erase) { struct efx_nic *efx = mtd->priv; - int rc; - rc = efx->type->mtd_erase(mtd, erase->addr, erase->len); - if (rc == 0) { - erase->state = MTD_ERASE_DONE; - } else { - erase->state = MTD_ERASE_FAILED; - erase->fail_addr = MTD_FAIL_ADDR_UNKNOWN; - } - mtd_erase_callback(erase); - return rc; + return efx->type->mtd_erase(mtd, erase->addr, erase->len); } static void efx_mtd_sync(struct mtd_info *mtd) diff --git a/drivers/staging/goldfish/goldfish_nand.c b/drivers/staging/goldfish/goldfish_nand.c index 52cc1363993e..f5e002ecba75 100644 --- a/drivers/staging/goldfish/goldfish_nand.c +++ b/drivers/staging/goldfish/goldfish_nand.c @@ -119,9 +119,6 @@ static int goldfish_nand_erase(struct mtd_info *mtd, struct erase_info *instr) return -EIO; } - instr->state = MTD_ERASE_DONE; - mtd_erase_callback(instr); - return 0; invalid_arg: diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 4cbb7f555244..a86c4fa93115 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -30,12 +30,6 @@ #include -#define MTD_ERASE_PENDING 0x01 -#define MTD_ERASING 0x02 -#define MTD_ERASE_SUSPEND 0x04 -#define MTD_ERASE_DONE 0x08 -#define MTD_ERASE_FAILED 0x10 - #define MTD_FAIL_ADDR_UNKNOWN -1LL struct mtd_info; @@ -49,7 +43,6 @@ struct erase_info { uint64_t addr; uint64_t len; uint64_t fail_addr; - u_char state; }; struct mtd_erase_region_info { @@ -589,8 +582,6 @@ extern void register_mtd_user (struct mtd_notifier *new); extern int unregister_mtd_user (struct mtd_notifier *old); void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); -void mtd_erase_callback(struct erase_info *instr); - static inline int mtd_is_bitflip(int err) { return err == -EUCLEAN; }