[Intel-gfx] [PATCH 2/2] drm/i915: Fix mbus join config lookup

Ville Syrjala ville.syrjala at linux.intel.com
Mon Feb 7 13:27:00 UTC 2022


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

The bogus loop from compute_dbuf_slices() was copied into
check_mbus_joined() as well. So this lookup is wrong as well.
Fix it.

Cc: stable at vger.kernel.org
Fixes: f4dc00863226 ("drm/i915/adl_p: MBUS programming")
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index da721aea70ff..23d4bb011fc8 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4831,7 +4831,7 @@ static bool check_mbus_joined(u8 active_pipes,
 {
 	int i;
 
-	for (i = 0; i < dbuf_slices[i].active_pipes; i++) {
+	for (i = 0; dbuf_slices[i].active_pipes != 0; i++) {
 		if (dbuf_slices[i].active_pipes == active_pipes)
 			return dbuf_slices[i].join_mbus;
 	}
-- 
2.34.1



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