linux-kernel - Re: reboot on wandboard fails with v4.14.67 (bisected to 2059e527a6)

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Date:   Wed, 29 Aug 2018 17:17:22 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     stable <stable@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sean Nyekjaer <sean.nyekjaer@...vas.dk>
Subject: Re: reboot on wandboard fails with v4.14.67 (bisected to 2059e527a6)

Hi Rasmus,

On Wed, Aug 29, 2018 at 10:57 AM, Fabio Estevam <festevam@...il.com> wrote:
> Hi Rasmus,
>
>> On 2018-08-29 11:55, Rasmus Villemoes wrote:
>>> We're using imx_v6_v7_defconfig on our Wandboards. After upgrading to
>>> v4.14.67, reboot no longer works (or, well, takes a very long time when
>>> the watchdog is configured).
>>>
>>> v4.14.66 works fine, the breakage bisects to
>>> 2059e527a659cf16d6bb709f1c8509f7a7623fc4 (ARM: imx_v6_v7_defconfig:
>>> Select ULPI support), and reverting that on top of v4.14.67 again works.
>>
>> FWIW, v4.18 (the mainline release containing the upstream commit
>> 157bcc0609) works fine, while v4.17.19 which also has that commit
>> backported (as df06ca1f56) fails. So I'm guessing there must be some
>> other commits in v4.18 that happen to make imx_v6_v7_defconfig work.
>
> Thanks for reporting.
>
> Commit 157bcc06094c3 ("ARM: imx_v6_v7_defconfig: Select ULPI support")
> was meant to be applied for 4.18 only.
>
> I think we should revert it from earlier stable versions.

Or a better solution would be to port
a930d8bd94d8db7715d1af74299f710b1fb22fc8 from upstream.

Please test the attached patch adjusted for 4.14.67.

Thanks

View attachment "0001-usb-chipidea-Always-build-ULPI-code.patch" of type "text/x-patch" (3755 bytes)