[Intel-gfx] [PATCH v3 7/7] drm/i915/gt: Also check set bits in clr_set()

Lucas De Marchi lucas.demarchi at intel.com
Fri Jun 30 20:35:09 UTC 2023


When checking if the workarounds were applied succesfully, the read-back
mask should also contain the bits being set: it's possible that in a
call to wa_write_clr_set(), the cleared bits are not a superset of the
set bits.

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index a6f3f160ebe2..b177c588698b 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -241,13 +241,13 @@ static void wa_mcr_add(struct i915_wa_list *wal, i915_mcr_reg_t reg,
 static void
 wa_write_clr_set(struct i915_wa_list *wal, i915_reg_t reg, u32 clear, u32 set)
 {
-	wa_add(wal, reg, clear, set, clear, false);
+	wa_add(wal, reg, clear, set, clear | set, false);
 }
 
 static void
 wa_mcr_write_clr_set(struct i915_wa_list *wal, i915_mcr_reg_t reg, u32 clear, u32 set)
 {
-	wa_mcr_add(wal, reg, clear, set, clear, false);
+	wa_mcr_add(wal, reg, clear, set, clear | set, false);
 }
 
 static void
-- 
2.40.1



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