[Intel-gfx] [PATCH] drm/i915/pmu: Check if pmu is closed before stopping event

[Andi Shyti]

Hi Umesh,

On Fri, Oct 20, 2023 at 08:24:41AM -0700, Umesh Nerlige Ramappa wrote:
> When the driver unbinds, pmu is unregistered and i915->uabi_engines is
> set to RB_ROOT. Due to this, when i915 PMU tries to stop the engine
> events, it issues a warn_on because engine lookup fails.
> 
> All perf hooks are taking care of this using a pmu->closed flag that is
> set when PMU unregisters. The stop event seems to have been left out.
> 
> Check for pmu->closed in pmu_event_stop as well.
> 
> Based on discussion here -
> https://patchwork.freedesktop.org/patch/492079/?series=105790&rev=2
> 
> v2: s/is/if/ in commit title
> v3: Add fixes tag and cc stable
> 
> Cc: <stable at vger.kernel.org> # v5.11+
> Fixes: b00bccb3f0bb ("drm/i915/pmu: Handle PCI unbind")
> Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

the failure from the shards tests looks unrelated.

Please next time don't forget to add a versioning to the patches
you are sending.

Pushed in drm-intel-gt-next.

Thank you,
Andi