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Patch "mmc: block: Fix incorrectly initialized requests" has been added to the 4.13-stable tree

PATCH [email protected] 1 participant 1 message Sep 28, 2017

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This is a note to let you know that I've just added the patch titled

mmc: block: Fix incorrectly initialized requests

to the 4.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
mmc-block-fix-incorrectly-initialized-requests.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 01f5bbd17a8066b58dba9b5049fad504bce67322 Mon Sep 17 00:00:00 2001

From: Adrian Hunter <[email protected]>
Date: Thu, 7 Sep 2017 10:40:35 +0300
Subject: mmc: block: Fix incorrectly initialized requests

From: Adrian Hunter <[email protected]>

commit 01f5bbd17a8066b58dba9b5049fad504bce67322 upstream.

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

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

Patches currently in stable-queue which might be from [email protected] are

queue-4.13/mmc-block-fix-incorrectly-initialized-requests.patch