[Intel-gfx] [PATCH 1/4] drm: Add a non-locking version of drm_kms_helper_poll_enable().

Lukas Wunner lukas at wunner.de
Tue Sep 1 15:31:07 PDT 2015


Hi Egbert,

On Wed, Sep 02, 2015 at 12:10:19AM +0200, Egbert Eich wrote:
> Lukas Wunner writes:
>  > On Tue, Sep 01, 2015 at 10:21:32PM +0200, Egbert Eich wrote:
>  > > drm_kms_helper_poll_enable() was converted to lock the mode_config
>  > > mutex in commit 8c4ccc4ab6f64e859d4ff8d7c02c2ed2e956e07f
>  > > ("drm/probe-helper: Grab mode_config.mutex in poll_init/enable").
>  > > 
>  > > This disregarded the cases where this function is called from a context
>  > > where this mutex is already locked.
>  > 
>  > Which ones would that be?
> 
> Have you missed the next patch in the series?

Sorry, I should have asked more precisely: Is this the only one?
If so it may make sense to modify i915_hotplug_work_func or
intel_hpd_irq_storm_disable instead.

Best regards,

Lukas


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