[P:linux][PATCH 1/5] drm/xe/guc: Ignore GuC CT errors when wedged

[Thibault Ferrante]

From: Vinay Belgaumkar <vinay.belgaumkar at intel.com>

BugLink: https://bugs.launchpad.net/bugs/2122421

Messaging to GuC may get canceled when device is wedged. Don't
flag this as an error in xe_guc_pc code.

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar at intel.com>
Reviewed-by: Stuart Summers <stuart.summers at intel.com>
Link: https://lore.kernel.org/r/20250612-wa-14022085890-v4-1-94ba5dcc1e30@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
(cherry picked from commit fa424387379650cdc0ce42c2f6e76e020b4c04d1)
Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu at intel.com>
Signed-off-by: Thibault Ferrante <thibault.ferrante at canonical.com>
---
 drivers/gpu/drm/xe/xe_guc_pc.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_guc_pc.c b/drivers/gpu/drm/xe/xe_guc_pc.c
index 2276d85926fc..e025e1f4f007 100644
--- a/drivers/gpu/drm/xe/xe_guc_pc.c
+++ b/drivers/gpu/drm/xe/xe_guc_pc.c
@@ -152,7 +152,7 @@ static int pc_action_reset(struct xe_guc_pc *pc)
 	int ret;
 
 	ret = xe_guc_ct_send(ct, action, ARRAY_SIZE(action), 0, 0);
-	if (ret)
+	if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == -ECANCELED))
 		xe_gt_err(pc_to_gt(pc), "GuC PC reset failed: %pe\n",
 			  ERR_PTR(ret));
 
@@ -176,7 +176,7 @@ static int pc_action_query_task_state(struct xe_guc_pc *pc)
 
 	/* Blocking here to ensure the results are ready before reading them */
 	ret = xe_guc_ct_send_block(ct, action, ARRAY_SIZE(action));
-	if (ret)
+	if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == -ECANCELED))
 		xe_gt_err(pc_to_gt(pc), "GuC PC query task state failed: %pe\n",
 			  ERR_PTR(ret));
 
@@ -199,7 +199,7 @@ static int pc_action_set_param(struct xe_guc_pc *pc, u8 id, u32 value)
 		return -EAGAIN;
 
 	ret = xe_guc_ct_send(ct, action, ARRAY_SIZE(action), 0, 0);
-	if (ret)
+	if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == -ECANCELED))
 		xe_gt_err(pc_to_gt(pc), "GuC PC set param[%u]=%u failed: %pe\n",
 			  id, value, ERR_PTR(ret));
 
@@ -221,7 +221,7 @@ static int pc_action_unset_param(struct xe_guc_pc *pc, u8 id)
 		return -EAGAIN;
 
 	ret = xe_guc_ct_send(ct, action, ARRAY_SIZE(action), 0, 0);
-	if (ret)
+	if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == -ECANCELED))
 		xe_gt_err(pc_to_gt(pc), "GuC PC unset param failed: %pe",
 			  ERR_PTR(ret));
 
@@ -238,7 +238,7 @@ static int pc_action_setup_gucrc(struct xe_guc_pc *pc, u32 mode)
 	int ret;
 
 	ret = xe_guc_ct_send(ct, action, ARRAY_SIZE(action), 0, 0);
-	if (ret)
+	if (ret && !(xe_device_wedged(pc_to_xe(pc)) && ret == -ECANCELED))
 		xe_gt_err(pc_to_gt(pc), "GuC RC enable mode=%u failed: %pe\n",
 			  mode, ERR_PTR(ret));
 	return ret;
-- 
2.48.1