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 <stable@xxxxxxxxxxxxxxx> know about it.
>From 8c300fe282fa254ea730c92cb0983e2642dc1fff Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@xxxxxxxxxxx>
Date: Tue, 3 Jan 2017 18:13:48 -0600
Subject: usb: musb: Fix trying to free already-free IRQ 4
From: Tony Lindgren <tony@xxxxxxxxxxx>
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.
Fixes: 6995eb68aab7 ("USB: musb: enable low level DMA operation for Blackfin")
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
[b-liu@xxxxxx: added Fixes tag]
Signed-off-by: Bin Liu <b-liu@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/musb/musbhsdma.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/musb/musbhsdma.h
+++ b/drivers/usb/musb/musbhsdma.h
@@ -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 tony@xxxxxxxxxxx are
queue-4.4/usb-musb-fix-trying-to-free-already-free-irq-4.patch
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