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[1/2] drm/i915: Check for all subplatform bits

Message ID 20210121161936.746591-1-tvrtko.ursulin@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series [1/2] drm/i915: Check for all subplatform bits | expand

Commit Message

Tvrtko Ursulin Jan. 21, 2021, 4:19 p.m. UTC
From: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>

Current code is checking only 2 bits in the subplatform, but actually 3
bits are allocated for the field. Check all 3 bits.

Fixes: 805446c8347c9 (drm/i915: Introduce concept of a sub-platform)
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f0222de2d216..c31d2776134a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1343,7 +1343,7 @@  intel_subplatform(const struct intel_runtime_info *info, enum intel_platform p)
 {
 	const unsigned int pi = __platform_mask_index(info, p);
 
-	return info->platform_mask[pi] & INTEL_SUBPLATFORM_BITS;
+	return info->platform_mask[pi] & ((1 << INTEL_SUBPLATFORM_BITS) - 1);
 }
 
 static __always_inline bool