Re: [PATCH] usb: musb: jz4740: Prevent lockup when CONFIG_SMP is set

[Paul Cercueil]

Hi Bin,

The patch it fixes was introduced in 5.7-rc1, is it possible to queue 
it for the next -rc? Otherwise I'll need to Cc it to linux-stable.

-Paul

Le jeu. 21 mai 2020 à 15:34, Bin Liu <b-liu@xxxxxx> a écrit :
> On Wed, May 20, 2020 at 05:01:11PM +0200, Paul Cercueil wrote:
> >  The function dma_controller_irq() locks up the exact same spinlock 
> > we
> >  locked before calling it, which obviously resulted in a deadlock 
> > when
> >  CONFIG_SMP was enabled. This flew under the radar as none of the 
> > boards
> >  supported by this driver needs SMP.
> >
> >  Fixes: 57aadb46bd63 ("usb: musb: jz4740: Add support for DMA")
> >  Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
>
> Queued for v5.8. Thanks.
> -Bin.