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Subject[PATCH V8 07/14] mmc: block: Factor out mmc_setup_queue()
Date
Factor out some common code that will also be used with blk-mq.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/mmc/core/queue.c | 51 ++++++++++++++++++++++++++++--------------------
1 file changed, 30 insertions(+), 21 deletions(-)

diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 74c663b1c0a7..da74fe4e638a 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -223,6 +223,35 @@ static void mmc_exit_request(struct request_queue *q, struct request *req)
mq_rq->sg = NULL;
}

+static void mmc_setup_queue(struct mmc_queue *mq, struct mmc_card *card)
+{
+ struct mmc_host *host = card->host;
+ u64 limit = BLK_BOUNCE_HIGH;
+
+ if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
+ limit = (u64)dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT;
+
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue);
+ queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, mq->queue);
+ if (mmc_can_erase(card))
+ mmc_queue_setup_discard(mq->queue, card);
+
+ if (card->bouncesz) {
+ blk_queue_max_hw_sectors(mq->queue, card->bouncesz / 512);
+ blk_queue_max_segments(mq->queue, card->bouncesz / 512);
+ blk_queue_max_segment_size(mq->queue, card->bouncesz);
+ } else {
+ blk_queue_bounce_limit(mq->queue, limit);
+ blk_queue_max_hw_sectors(mq->queue,
+ min(host->max_blk_count, host->max_req_size / 512));
+ blk_queue_max_segments(mq->queue, host->max_segs);
+ blk_queue_max_segment_size(mq->queue, host->max_seg_size);
+ }
+
+ /* Initialize thread_sem even if it is not used */
+ sema_init(&mq->thread_sem, 1);
+}
+
/**
* mmc_init_queue - initialise a queue structure.
* @mq: mmc queue
@@ -236,12 +265,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
spinlock_t *lock, const char *subname)
{
struct mmc_host *host = card->host;
- u64 limit = BLK_BOUNCE_HIGH;
int ret = -ENOMEM;

- if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
- limit = (u64)dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT;
-
/*
* mmc_init_request() depends on card->bouncesz so it must be calculated
* before blk_init_allocated_queue() starts allocating requests.
@@ -266,24 +291,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
}

blk_queue_prep_rq(mq->queue, mmc_prep_request);
- queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue);
- queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, mq->queue);
- if (mmc_can_erase(card))
- mmc_queue_setup_discard(mq->queue, card);
-
- if (card->bouncesz) {
- blk_queue_max_hw_sectors(mq->queue, card->bouncesz / 512);
- blk_queue_max_segments(mq->queue, card->bouncesz / 512);
- blk_queue_max_segment_size(mq->queue, card->bouncesz);
- } else {
- blk_queue_bounce_limit(mq->queue, limit);
- blk_queue_max_hw_sectors(mq->queue,
- min(host->max_blk_count, host->max_req_size / 512));
- blk_queue_max_segments(mq->queue, host->max_segs);
- blk_queue_max_segment_size(mq->queue, host->max_seg_size);
- }

- sema_init(&mq->thread_sem, 1);
+ mmc_setup_queue(mq, card);

mq->thread = kthread_run(mmc_queue_thread, mq, "mmcqd/%d%s",
host->index, subname ? subname : "");
--
1.9.1
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