drm/i915: Don't try to disable host RPS when this was never enabled.

Specially in GT reset case this could be triggered and try
to disable things that had never been enabled. Let's add
some protection here.

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902095126.373036-1-rodrigo.vivi@intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 579ae9ac089cbb07f1f1db6b1b3d790c361d9fc4..6fadde4ee7bf76abf317c145c74362b797dadd5c 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -1551,6 +1551,9 @@ void intel_rps_disable(struct intel_rps *rps)
 {
        struct drm_i915_private *i915 = rps_to_i915(rps);
 
+       if (!intel_rps_is_enabled(rps))
+               return;
+
        intel_rps_clear_enabled(rps);
        intel_rps_clear_interrupts(rps);
        intel_rps_clear_timer(rps);