Re: [PATCH AUTOSEL for 4.9 36/56] drm/i915: Fix the level 0 max_wm hack on VLV/CHV

From: alexander . levin
Date: Wed Nov 15 2017 - 11:46:51 EST


On Wed, Nov 15, 2017 at 01:08:05PM +0200, Ville Syrjälä wrote:
>On Wed, Nov 15, 2017 at 02:45:43AM +0000, alexander.levin@xxxxxxxxxxx wrote:
>> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>>
>> [ Upstream commit 1be4d3793d5a93daddcd9be657c429b38ad750a3 ]
>>
>> The watermark should never exceed the FIFO size, so we need to
>> check against the current FIFO size instead of the theoretical
>> maximum when we clamp the level 0 watermark.
>>
>> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>> Link: https://urldefense.proofpoint.com/v2/url?u=http-3A__patchwork.freedesktop.org_patch_msgid_1480354637-2D14209-2D4-2Dgit-2Dsend-2Demail-2Dville.syrjala-40linux.intel.com&d=DwIDAw&c=udBTRvFvXC5Dhqg7UHpJlPps3mZ3LRxpb6__0PomBTQ&r=bUtaaC9mlBij4OjEG_D-KPul_335azYzfC4Rjgomobo&m=iuPtUar-VEGbH1jmVH_UTr4C02X8fmjHUfNYix-Yc0Y&s=ha_F0zP3A1Aztp5S5e6_bqdhiuuPXhn0dRWQ58vv3Is&e=
>> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
>> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
>
>Why are these patches being proposed for stable? They're not straight up
>fixes for known issues, and there's always a chance that something will
>break. Who is doing the qa on this?

Hi Ville,

They were selected automatically as part of a new process we're trying
out. If you disagree with the selection I'd be happy to drop it.

--

Thanks,
Sasha