linux-kernel - Re: [PATCH v4] drm/vblank: Increase timeout in drm_wait_one

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Message-ID: <e4882d15-1ba1-4521-ab52-365eeb7f77b6@gmail.com>
Date: Tue, 28 Oct 2025 20:50:52 -0700
From: Chintan Patel <chintanlike@...il.com>
To: Thomas Zimmermann <tzimmermann@...e.de>,
 maarten.lankhorst@...ux.intel.com, maxime.ripard@...nel.org,
 airlied@...il.com, simona@...ll.ch
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 syzbot+147ba789658184f0ce04@...kaller.appspotmail.com
Subject: Re: [PATCH v4] drm/vblank: Increase timeout in drm_wait_one_vblank()



On 10/28/25 10:14, Thomas Zimmermann wrote:
> 
> 
> Am 28.10.25 um 04:43 schrieb Chintan Patel:
>> Currently, wait_event_timeout() in drm_wait_one_vblank() uses a 100ms
>> timeout. Under heavy scheduling pressure or rare delayed vblank
>> handling, this can trigger WARNs unnecessarily.
>>
>> Increase the timeout to 1000ms to reduce spurious WARNs, while still
>> catching genuine issues.
> 
> Thanks a lot.
> 

Appreciate your guidance !