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mmc: block: introduce new_areq and old_areq 

Recycling the same variable in an x=x+1 fashion may seem
clever here but it makes the code terse and hard to follow
for humans. Introduce a new_areq and old_areq variable so
we see what is going on.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Linus Walleij 2017-01-24 11:17:56 +01:00 committed by Ulf Hansson
parent da0dbaffe3
commit 7d552a4808
1 changed files with 8 additions and 6 deletions
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14
drivers/mmc/core/block.c
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@ -1634,7 +1634,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
enum mmc_blk_status status;
struct mmc_queue_req *mq_rq;
struct request *req;
struct mmc_async_req *areq;
struct mmc_async_req *new_areq;
struct mmc_async_req *old_areq;
if (!rqc && !mq->mqrq_prev->req)
return 0;
@ -1654,11 +1655,12 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
}
mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
areq = &mq->mqrq_cur->mmc_active;
new_areq = &mq->mqrq_cur->mmc_active;
} else
areq = NULL;
areq = mmc_start_req(card->host, areq, &status);
if (!areq) {
new_areq = NULL;
old_areq = mmc_start_req(card->host, new_areq, &status);
if (!old_areq) {
/*
* We have just put the first request into the pipeline
* and there is nothing more to do until it is
@ -1673,7 +1675,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
* An asynchronous request has been completed and we proceed
* to handle the result of it.
*/
mq_rq = container_of(areq, struct mmc_queue_req, mmc_active);
mq_rq = container_of(old_areq, struct mmc_queue_req, mmc_active);
brq = &mq_rq->brq;
req = mq_rq->req;
type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE;