Patch "mmc: mxs: Initialize the spinlock prior to using it" has been added to the 4.4-stable tree

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

mmc: mxs: Initialize the spinlock prior to using it

to the 4.4-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-mxs-initialize-the-spinlock-prior-to-using-it.patch
and it can be found in the queue-4.4 subdirectory.

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

From: Fabio Estevam <[email protected]>
Date: Sat, 5 Nov 2016 17:45:07 -0200
Subject: mmc: mxs: Initialize the spinlock prior to using it

From: Fabio Estevam <[email protected]>

commit f91346e8b5f46aaf12f1df26e87140584ffd1b3f upstream.

An interrupt may occur right after devm_request_irq() is called and prior to the spinlock initialization, leading to a kernel oops, as the interrupt handler uses the spinlock.

In order to prevent this problem, move the spinlock initialization prior to requesting the interrupts.

---
 drivers/mmc/host/mxs-mmc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -661,13 +661,13 @@ static int mxs_mmc_probe(struct platform
 
 	platform_set_drvdata(pdev, mmc);
 
+	spin_lock_init(&host->lock);
+
 	ret = devm_request_irq(&pdev->dev, irq_err, mxs_mmc_irq_handler, 0,
 			       dev_name(&pdev->dev), host);
 	if (ret)
 		goto out_free_dma;
 
-	spin_lock_init(&host->lock);
-
 	ret = mmc_add_host(mmc);
 	if (ret)
 		goto out_free_dma;

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

queue-4.4/mmc-mxs-initialize-the-spinlock-prior-to-using-it.patch