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mmc: queue: Factor out mmc_queue_alloc_sgs() 

In preparation for supporting a queue of requests, factor out
mmc_queue_alloc_sgs().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Harjani Ritesh <riteshh@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2016-11-29 12:09:13 +02:00 committed by Ulf Hansson
parent f2b8b522cf
commit 64e29e42a6
1 changed files with 16 additions and 6 deletions
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22
drivers/mmc/card/queue.c
View File

@ -237,6 +237,21 @@ static int mmc_queue_alloc_bounce_sgs(struct mmc_queue *mq,
}
#endif
static int mmc_queue_alloc_sgs(struct mmc_queue *mq, int max_segs)
{
struct mmc_queue_req *mqrq_cur = mq->mqrq_cur;
struct mmc_queue_req *mqrq_prev = mq->mqrq_prev;
int ret;
mqrq_cur->sg = mmc_alloc_sg(max_segs, &ret);
if (ret)
return ret;
mqrq_prev->sg = mmc_alloc_sg(max_segs, &ret);
return ret;
}
/**
* mmc_init_queue - initialise a queue structure.
* @mq: mmc queue
@ -309,12 +324,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
blk_queue_max_segments(mq->queue, host->max_segs);
blk_queue_max_segment_size(mq->queue, host->max_seg_size);
mqrq_cur->sg = mmc_alloc_sg(host->max_segs, &ret);
if (ret)
goto cleanup_queue;
mqrq_prev->sg = mmc_alloc_sg(host->max_segs, &ret);
ret = mmc_queue_alloc_sgs(mq, host->max_segs);
if (ret)
goto cleanup_queue;
}