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authorStefan Agner <stefan.agner@toradex.com>2014-06-24 13:57:21 +0200
committerStefan Agner <stefan.agner@toradex.com>2014-07-21 14:26:21 +0200
commitbdf9e11d339ebc121e80e7ecdd44e0abcaf4ff38 (patch)
tree3d9345c8c31467fe31411cdc310a4750dd61b5af
parent29b19ff42a7d4c609f824c13ca139eef7332ff1f (diff)
mmc: card: retry if transfer aborted due to out of range
This works around a issue we see when using eMMC 4.5 on tegra SDHCI host controller.
-rw-r--r--drivers/mmc/card/block.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index bd5427d1f9e3..1583904a93a9 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -860,6 +860,15 @@ static int mmc_blk_err_check(struct mmc_card *card,
if (brq->cmd.resp[0] & CMD_ERRORS) {
pr_err("%s: r/w command failed, status = %#x\n",
req->rq_disk->disk_name, brq->cmd.resp[0]);
+
+ /* HACK: if the error is out of range, retry... */
+ if (brq->cmd.resp[0] & R1_OUT_OF_RANGE) {
+ pr_info("%s: opcode: %x, arg: %x\n", req->rq_disk->disk_name,
+ brq->sbc.opcode, brq->sbc.arg);
+ pr_err("%s: I/O error, retrying...\n", req->rq_disk->disk_name);
+ return MMC_BLK_RETRY;
+ }
+
return MMC_BLK_ABORT;
}