From patchwork Wed Sep 19 12:08:14 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [RFC] bcm47xxsflash: just use memcpy for reading Date: Wed, 19 Sep 2012 02:08:14 -0000 From: =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= X-Patchwork-Id: 185009 Message-Id: <1348056494-30019-1-git-send-email-zajec5@gmail.com> To: linux-mtd@lists.infradead.org, Artem Bityutskiy Cc: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Jonas Gorski --- Still have to check it with aiaiai --- drivers/mtd/devices/bcm47xxsflash.c | 31 ++----------------------------- 1 files changed, 2 insertions(+), 29 deletions(-) diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c index a328872..2f8dfd4 100644 --- a/drivers/mtd/devices/bcm47xxsflash.c +++ b/drivers/mtd/devices/bcm47xxsflash.c @@ -14,41 +14,14 @@ static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct bcma_sflash *sflash = mtd->priv; - size_t bytes_read = 0; - __iomem u8 *src = (__iomem u8 *)KSEG0ADDR(sflash->window + from); - int i; - size_t unaligned_before, unaligned_after; /* Check address range */ if ((from + len) > mtd->size) return -EINVAL; - unaligned_before = from & 0x3; - unaligned_after = (from + len) & 0x3; + memcpy(buf, (void *)KSEG0ADDR(sflash->window + from), len); - for (i = 0; i < unaligned_before; i++) { - *buf = readb(src); - buf++; - src++; - bytes_read++; - } - for (i = from - unaligned_before; i < from + len - unaligned_after; - i += 4) { - *(u32 *)buf = readl(src); - buf += 4; - src += 4; - bytes_read += 4; - } - for (i = 0; i < unaligned_after; i++) { - *buf = readb(src); - buf++; - src++; - bytes_read++; - } - - *retlen = bytes_read; - - return 0; + return len; } static void bcm47xxsflash_fill_mtd(struct bcma_sflash *sflash,