drm/xe: Fix stolen size check to allow equal WOPCM size

On some platforms without dedicated stolen memory, the calculated
stolen size may be exactly equal to the WOPCM size. The current
assertion incorrectly requires it to be strictly greater, causing
a false failure. Relax the check to allow equality.

Fixes: 65369b8e2961 ("drm/xe: Change return type of detect_bar2_dgfx() from s64 to u64")
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6359
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://lore.kernel.org/r/20251016225506.2256127-2-shuicheng.lin@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
index e368b2a36bace0ed889970f2d8745a22d88993c3..1bddecfb723a45de425355bd24d8e2c2a4d16116 100644 (file)
--- a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
+++ b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c
@@ -106,7 +106,7 @@ static u64 detect_bar2_dgfx(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr)
 
        stolen_size = tile_size - mgr->stolen_base;
 
-       xe_assert(xe, stolen_size > wopcm_size);
+       xe_assert(xe, stolen_size >= wopcm_size);
        stolen_size -= wopcm_size;
 
        /* Verify usage fits in the actual resource available */