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mmc: block: Fix incorrectly initialized requests 

mmc_init_request() depends on card->bouncesz so it must be calculated
before blk_init_allocated_queue() starts allocating requests.

Reported-by: Seraphime Kirkovski <kirkseraph@gmail.com>
Fixes: 304419d8a7 ("mmc: core: Allocate per-request data using the..")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Seraphime Kirkovski <kirkseraph@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Adrian Hunter 2017-09-07 10:40:35 +03:00 committed by Ulf Hansson
parent c16a854e44
commit 01f5bbd17a
1 changed files with 6 additions and 1 deletions
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7
drivers/mmc/core/queue.c
View File

@ -242,6 +242,12 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
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.
*/
card->bouncesz = mmc_queue_calc_bouncesz(host);
mq->card = card;
mq->queue = blk_alloc_queue(GFP_KERNEL);
if (!mq->queue)
@ -265,7 +271,6 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
if (mmc_can_erase(card))
mmc_queue_setup_discard(mq->queue, card);
card->bouncesz = mmc_queue_calc_bouncesz(host);
if (card->bouncesz) {
blk_queue_max_hw_sectors(mq->queue, card->bouncesz / 512);
blk_queue_max_segments(mq->queue, card->bouncesz / 512);