From: Paul Cercueil <paul@crapouillou.net>
To: Bin Liu <b-liu@ti.com>
Cc: od@zcrc.me, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] usb: musb: jz4740: Prevent lockup when CONFIG_SMP is set
Date: Thu, 21 May 2020 22:39:25 +0200 [thread overview]
Message-ID: <P18PAQ.NMWTDBTHKARL1@crapouillou.net> (raw)
In-Reply-To: <20200521203422.GA25575@iaqt7>
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@ti.com> 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@crapouillou.net>
>
> Queued for v5.8. Thanks.
> -Bin.
next prev parent reply other threads:[~2020-05-21 20:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 15:01 [PATCH] usb: musb: jz4740: Prevent lockup when CONFIG_SMP is set Paul Cercueil
2020-05-21 20:34 ` Bin Liu
2020-05-21 20:39 ` Paul Cercueil [this message]
2020-05-21 21:30 ` Bin Liu
2020-05-21 21:35 ` Bin Liu
2020-05-21 21:28 ` Bin Liu
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