On Tue, Jan 03, 2017 at 09:15:08AM -0600, Bin Liu wrote:
> From: Tony Lindgren <tony@xxxxxxxxxxx>
>
> 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.
>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> Signed-off-by: Bin Liu <b-liu@xxxxxx>
> ---
> drivers/usb/musb/musbhsdma.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Is this a new thing?
>
> diff --git a/drivers/usb/musb/musbhsdma.h b/drivers/usb/musb/musbhsdma.h
> index f7b13fd25257..a3dcbd55e436 100644
> --- 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;
Is this a regression? Needs to go to older kernels? What caused this
issue?
thanks,
greg k-h
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