@@ -1029,6 +1029,18 @@ static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type)
md->reset_done &= ~type;
}
+int mmc_access_rpmb(struct mmc_queue *mq)
+{
+ struct mmc_blk_data *md = mq->data;
+ /*
+ * If this is a RPMB partition access, return ture
+ */
+ if (md && md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
+ return true;
+
+ return false;
+}
+
static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req)
{
struct mmc_blk_data *md = mq->data;
@@ -38,7 +38,7 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
return BLKPREP_KILL;
}
- if (mq && mmc_card_removed(mq->card))
+ if (mq && (mmc_card_removed(mq->card) || mmc_access_rpmb(mq)))
return BLKPREP_KILL;
req->cmd_flags |= REQ_DONTPREP;
@@ -73,4 +73,6 @@ extern void mmc_queue_bounce_post(struct mmc_queue_req *);
extern int mmc_packed_init(struct mmc_queue *, struct mmc_card *);
extern void mmc_packed_clean(struct mmc_queue *);
+extern int mmc_access_rpmb(struct mmc_queue *);
+
#endif
This is a note to let you know that I have just added a patch titled mmc: card: Don't access RPMB partitions for normal read/write to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue This patch is scheduled to be released in version 3.19.8-ckt1. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.19.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 4a991a70a9224867b1df79d065aae97609608aae Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong <chuanxiao.dong@intel.com> Date: Tue, 12 Aug 2014 12:01:30 +0800 Subject: mmc: card: Don't access RPMB partitions for normal read/write commit 4e93b9a6abc0d028daf3c8a00cb77b679d8a4df4 upstream. During kernel boot, it will try to read some logical sectors of each block device node for the possible partition table. But since RPMB partition is special and can not be accessed by normal eMMC read / write CMDs, it will cause below error messages during kernel boot: ... mmc0: Got data interrupt 0x00000002 even though no data operation was in progress. mmcblk0rpmb: error -110 transferring data, sector 0, nr 32, cmd response 0x900, card status 0xb00 mmcblk0rpmb: retrying using single block read mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 end_request: I/O error, dev mmcblk0rpmb, sector 0 Buffer I/O error on device mmcblk0rpmb, logical block 0 end_request: I/O error, dev mmcblk0rpmb, sector 8 Buffer I/O error on device mmcblk0rpmb, logical block 1 end_request: I/O error, dev mmcblk0rpmb, sector 16 Buffer I/O error on device mmcblk0rpmb, logical block 2 end_request: I/O error, dev mmcblk0rpmb, sector 24 Buffer I/O error on device mmcblk0rpmb, logical block 3 ... This patch will discard the access request in eMMC queue if it is RPMB partition access request. By this way, it avoids trigger above error messages. Fixes: 090d25fe224c ("mmc: core: Expose access to RPMB partition") Signed-off-by: Yunpeng Gao <yunpeng.gao@intel.com> Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Tested-by: Michael Shigorin <mike@altlinux.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/mmc/card/block.c | 12 ++++++++++++ drivers/mmc/card/queue.c | 2 +- drivers/mmc/card/queue.h | 2 ++ 3 files changed, 15 insertions(+), 1 deletion(-) -- 1.9.1