[PATCH 6.9 093/222] drm/xe: Check pat.ops before dumping PAT settings

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



6.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>

[ Upstream commit a918e771e6fbe1fa68932af5b0cdf473e23090cc ]

We may leave pat.ops unset when running on brand new platform or
when running as a VF.  While the former is unlikely, the latter
is valid (future) use case and will cause NPD when someone will
try to dump PAT settings by debugfs.

It's better to check pointer to pat.ops instead of specific .dump
hook, as we have this hook always defined for every .ops variant.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240409105106.1067-2-michal.wajdeczko@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/xe/xe_pat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_pat.c b/drivers/gpu/drm/xe/xe_pat.c
index e148934d554b0..351ab902eb600 100644
--- a/drivers/gpu/drm/xe/xe_pat.c
+++ b/drivers/gpu/drm/xe/xe_pat.c
@@ -457,7 +457,7 @@ void xe_pat_dump(struct xe_gt *gt, struct drm_printer *p)
 {
 	struct xe_device *xe = gt_to_xe(gt);
 
-	if (!xe->pat.ops->dump)
+	if (!xe->pat.ops)
 		return;
 
 	xe->pat.ops->dump(gt, p);
-- 
2.43.0







[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux