From: Umesh Nerlige Ramappa <[email protected]>
commit 8f6d08c9af284d74276da6681348e4673f13caea upstream.
Current code is checking only 2 bits in the subplatform, but actually 3
bits are allocated for the field. Check all 3 bits.
Fixes: 805446c8347c ("drm/i915: Introduce concept of a sub-platform")
Cc: Tvrtko Ursulin <[email protected]>
Signed-off-by: Umesh Nerlige Ramappa <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>
Link:
https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 27b695ee1af9bb36605e67055874ec081306ac28)
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/i915_drv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1894,7 +1894,7 @@ intel_subplatform(const struct intel_run
{
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
