[PATCH 6.9 072/222] drm/xe: Add a NULL check in xe_ttm_stolen_mgr_init

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

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

From: Nirmoy Das <nirmoy.das@xxxxxxxxx>

[ Upstream commit a6eff8f9c7e844cb24ccb188ca24abcd59734e74 ]

Add an explicit check to ensure that the mgr is not NULL.

Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240319130925.22399-1-nirmoy.das@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
index 3107d2a12426c..fb35e46d68b49 100644
--- a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
+++ b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
@@ -207,6 +207,11 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe)
 	u64 stolen_size, io_size, pgsize;
 	int err;
 
+	if (!mgr) {
+		drm_dbg_kms(&xe->drm, "Stolen mgr init failed\n");
+		return;
+	}
+
 	if (IS_SRIOV_VF(xe))
 		stolen_size = 0;
 	else if (IS_DGFX(xe))
-- 
2.43.0







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