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mmc: core: for data errors, take response of stop cmd into account 

Some errors are flagged only with the next command after a multiblock
transfer, e.g. ECC error. So, when checking for data transfer errors,
we check the result from the stop command as well.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2017-04-08 22:20:06 +02:00 committed by Ulf Hansson
parent a04e6bae9e
commit 9820a5b111
1 changed files with 3 additions and 2 deletions
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5
drivers/mmc/core/block.c
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@ -1446,7 +1446,8 @@ static enum mmc_blk_status mmc_blk_err_check(struct mmc_card *card,
return MMC_BLK_RETRY;
}
if (brq->data.error) {
/* Some errors (ECC) are flagged on the next commmand, so check stop, too */
if (brq->data.error || brq->stop.error) {
if (need_retune && !brq->retune_retry_done) {
pr_debug("%s: retrying because a re-tune was needed\n",
req->rq_disk->disk_name);
@ -1454,7 +1455,7 @@ static enum mmc_blk_status mmc_blk_err_check(struct mmc_card *card,
return MMC_BLK_RETRY;
}
pr_err("%s: error %d transferring data, sector %u, nr %u, cmd response %#x, card status %#x\n",
req->rq_disk->disk_name, brq->data.error,
req->rq_disk->disk_name, brq->data.error ?: brq->stop.error,
(unsigned)blk_rq_pos(req),
(unsigned)blk_rq_sectors(req),
brq->cmd.resp[0], brq->stop.resp[0]);