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mmc: block: blk-mq: Separate card polling from recovery 

Recovery is simpler to understand if it is only used for errors. Create a
separate function for card polling.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Adrian Hunter 2017-11-29 15:41:08 +02:00 committed by Ulf Hansson
parent 10f21df4a2
commit 88a516461e
1 changed files with 28 additions and 1 deletions
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27
drivers/mmc/core/block.c
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@ -2139,6 +2139,26 @@ static inline bool mmc_blk_rq_error(struct mmc_blk_request *brq)
brq->data.error || brq->cmd.resp[0] & CMD_ERRORS;
}
static int mmc_blk_card_busy(struct mmc_card *card, struct request *req)
{
struct mmc_queue_req *mqrq = req_to_mmc_queue_req(req);
bool gen_err = false;
int err;
if (mmc_host_is_spi(card->host) || rq_data_dir(req) == READ)
return 0;
err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req, &gen_err);
/* Copy the general error bit so it will be seen later on */
if (gen_err) {
mqrq->brq.stop.resp[0] |= R1_ERROR;
err = err ? err : -EIO;
}
return err;
}
static inline void mmc_blk_rw_reset_success(struct mmc_queue *mq,
struct request *req)
{
@ -2197,8 +2217,15 @@ static void mmc_blk_mq_poll_completion(struct mmc_queue *mq,
struct request *req)
{
struct mmc_queue_req *mqrq = req_to_mmc_queue_req(req);
struct mmc_host *host = mq->card->host;
if (mmc_blk_rq_error(&mqrq->brq) ||
mmc_blk_card_busy(mq->card, req)) {
mmc_blk_mq_rw_recovery(mq, req);
} else {
mmc_blk_rw_reset_success(mq, req);
mmc_retune_release(host);
}
mmc_blk_urgent_bkops(mq, mqrq);
}