linux-kernel - Re: [PATCH] drm/vc4: Remove broken attempt at GPU reset using genpd.

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Date:	Fri, 22 Jan 2016 09:06:05 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	Eric Anholt <eric@...olt.net>
Cc:	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	David Airlie <airlied@...ux.ie>, rjw@...ysocki.net
Subject: Re: [PATCH] drm/vc4: Remove broken attempt at GPU reset using genpd.

On 01/22/2016 08:54 AM, Sudip Mukherjee wrote:
> On Friday 22 January 2016 08:01 PM, Guenter Roeck wrote:
>> On Mon, Dec 21, 2015 at 06:08:44PM -0800, Eric Anholt wrote:
>>> I've tested and confirmed that it doesn't actually work.  We'll need
>>> to sort out how to do this properly later, but for now just remove it
>>> since it also caused build breakage due to using CONFIG_PM_SLEEP
>>> functions without our Kconfig depending on PM_SLEEP.
>>>
>>> Signed-off-by: Eric Anholt <eric@...olt.net>
>>
>> Still broken upstream.
>
> I saw Eric sending a pull request for it. But it was never pulled, maybe for the subject.
> Looks like rc1 will be broken for many arch.
>

Could be worse. Essentially every allmodconfig/allyesconfig which doesn't configure pm
is affected.

With my tests (v4.4-10282-geae2177):

Build results:
	total: 146 pass: 142 fail: 4
Failed builds:
	alpha:allmodconfig
	m68k:allmodconfig
	parisc:allmodconfig
	xtensa:allmodconfig

Qemu test results:
	total: 96 pass: 94 fail: 2
Failed tests:
	arm64:smp:defconfig
	arm64:nosmp:defconfig

arm64 qemu tests are broken for a different reason. There is a patch to fix it,
but for some reason it didn't make it into mainline (yet). It is in -next, though.

Guenter