mmc: block: Factor out mmc_setup_queue()

Factor out some common code that will also be used with blk-mq.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 24 insertions, 15 deletions

diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index f74f9ef460cc..4f33d277b125 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -177,6 +177,29 @@ 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);
+
+        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
@@ -190,12 +213,8 @@ 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;
-
         mq->card = card;
         mq->queue = blk_alloc_queue(GFP_KERNEL);
         if (!mq->queue)
@@ -214,18 +233,8 @@ 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);
 
-        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 : "");