Patch "usb: musb: Fix trying to free already-free IRQ 4" 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

usb: musb: Fix trying to free already-free IRQ 4

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:
usb-musb-fix-trying-to-free-already-free-irq-4.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: Tony Lindgren <[email protected]>
Date: Tue, 3 Jan 2017 18:13:48 -0600
Subject: usb: musb: Fix trying to free already-free IRQ 4

From: Tony Lindgren <[email protected]>

commit 8c300fe282fa254ea730c92cb0983e2642dc1fff upstream.

When unloading omap2430, we can get the following splat:

WARNING: CPU: 1 PID: 295 at kernel/irq/manage.c:1478 __free_irq+0xa8/0x2c8

Trying to free already-free IRQ 4
...
[<c01a8b78>] (free_irq) from [<bf0aea84>] (musbhs_dma_controller_destroy+0x28/0xb0 [musb_hdrc]) [<bf0aea84>] (musbhs_dma_controller_destroy [musb_hdrc]) from [<bf09f88c>] (musb_remove+0xf0/0x12c [musb_hdrc]) [<bf09f88c>] (musb_remove [musb_hdrc]) from [<c056a384>] (platform_drv_remove+0x24/0x3c)
...

This is because the irq number in use is 260 nowadays, and the dma controller is using u8 instead of int.

---
 drivers/usb/musb/musbhsdma.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -157,5 +157,5 @@ struct musb_dma_controller {
 	void __iomem			*base;
 	u8				channel_count;
 	u8				used_channels;
-	u8				irq;
+	int				irq;
 };

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

queue-4.4/usb-musb-fix-trying-to-free-already-free-irq-4.patch