Patch "usb: xhci: Fix OOPS in xhci error handling code" has been added to the 3.16-stable tree

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

    usb: xhci: Fix OOPS in xhci error handling code

to the 3.16-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:
     usb-xhci-fix-oops-in-xhci-error-handling-code.patch
and it can be found in the queue-3.16 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 0eda06c7c17ae48d7db69beef57f6e2b20bc3c72 Mon Sep 17 00:00:00 2001
From: Al Cooper <alcooperx@xxxxxxxxx>
Date: Thu, 11 Sep 2014 13:55:49 +0300
Subject: usb: xhci: Fix OOPS in xhci error handling code

From: Al Cooper <alcooperx@xxxxxxxxx>

commit 0eda06c7c17ae48d7db69beef57f6e2b20bc3c72 upstream.

The xhci driver will OOPS on resume from S2/S3 if dma_alloc_coherent()
is out of memory. This is a result of two things:
1. xhci_mem_cleanup() in xhci-mem.c free's xhci->lpm_command if
it's not NULL, but doesn't set it to NULL after the free.
2. xhci_mem_cleanup() is called twice on resume, once for normal
restart and once from xhci_mem_init() if dma_alloc_coherent() fails,
resulting in a free of xhci->lpm_command that has already been freed.
The fix is to set xhci->lpm_command to NULL after freeing it.

Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/host/xhci-mem.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1812,6 +1812,7 @@ void xhci_mem_cleanup(struct xhci_hcd *x
 
 	if (xhci->lpm_command)
 		xhci_free_command(xhci, xhci->lpm_command);
+	xhci->lpm_command = NULL;
 	if (xhci->cmd_ring)
 		xhci_ring_free(xhci, xhci->cmd_ring);
 	xhci->cmd_ring = NULL;


Patches currently in stable-queue which might be from alcooperx@xxxxxxxxx are

queue-3.16/usb-xhci-fix-oops-in-xhci-error-handling-code.patch
queue-3.16/of-allow-mem_reserve-of-memory-with-a-base-address-of-zero.patch
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