[Intel-gfx] [PATCH 1/2] drm/i915/pmu: Use only freq bits for falling back to requested freq

[Ashutosh Dixit]

On newer generations, the GEN12_RPSTAT1 register contains more than freq
information, e.g. see GEN12_VOLTAGE_MASK. Therefore use only the freq bits
to decide whether to fall back to requested freq.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit at intel.com>
---
 drivers/gpu/drm/i915/i915_pmu.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 52531ab28c5f..f0a1e36915b8 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -393,10 +393,8 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns)
 		 * case we assume the system is running at the intended
 		 * frequency. Fortunately, the read should rarely fail!
 		 */
-		val = intel_rps_read_rpstat_fw(rps);
-		if (val)
-			val = intel_rps_get_cagf(rps, val);
-		else
+		val = intel_rps_get_cagf(rps, intel_rps_read_rpstat_fw(rps));
+		if (!val)
 			val = rps->cur_freq;
 
 		add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_ACT],
-- 
2.38.0