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Subject[PATCH 4.13 009/110] mmc: block: Fix incorrectly initialized requests
Date
4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Adrian Hunter <adrian.hunter@intel.com>

commit 01f5bbd17a8066b58dba9b5049fad504bce67322 upstream.

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: 304419d8a7e9 ("mmc: core: Allocate per-request data using the..")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Seraphime Kirkovski <kirkseraph@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/mmc/core/queue.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -242,6 +242,12 @@ int mmc_init_queue(struct mmc_queue *mq,
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,
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);

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