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mmc: block: improve logging of handling emmc timeouts 

Add some logging to make it clear just how the emmc timeout
was handled.

Signed-off-by: Ken Sumrall <ksumrall@android.com>
[AmitP: cherry-picked this Android patch from aosp
        common kernel android-4.4]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ken Sumrall 2016-05-10 14:53:13 +05:30 committed by Ulf Hansson
parent ded97e0b16
commit cc4d04be94
1 changed files with 8 additions and 2 deletions
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10
drivers/mmc/card/block.c
View File

@ -948,16 +948,22 @@ static int mmc_blk_cmd_error(struct request *req, const char *name, int error,
req->rq_disk->disk_name, "timed out", name, status); req->rq_disk->disk_name, "timed out", name, status);
/* If the status cmd initially failed, retry the r/w cmd */ /* If the status cmd initially failed, retry the r/w cmd */
if (!status_valid) if (!status_valid) {
pr_err("%s: status not valid, retrying timeout\n",
req->rq_disk->disk_name);
return ERR_RETRY; return ERR_RETRY;
}
/* /*
* If it was a r/w cmd crc error, or illegal command * If it was a r/w cmd crc error, or illegal command
* (eg, issued in wrong state) then retry - we should * (eg, issued in wrong state) then retry - we should
* have corrected the state problem above. * have corrected the state problem above.
*/ */
if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) {
pr_err("%s: command error, retrying timeout\n",
req->rq_disk->disk_name);
return ERR_RETRY; return ERR_RETRY;
}
/* Otherwise abort the command */ /* Otherwise abort the command */
return ERR_ABORT; return ERR_ABORT;