drm/i915: Add a fault injection point to WOPCM init

Add a fault injection point in the WOPCM initialization path. v4: Move the injection inside the WOPCM init function. Signed-off-by: Jakub Bartmiński <[email protected]> Cc: Chris Wilson <[email protected]> Cc: Michał Winiarski <[email protected]> Cc: Michal Wajdeczko <[email protected]> Reviewed-by: Michal Wajdeczko <[email protected]> Reviewed-by: Chris Wilson <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
zarubaf · Jul 27, 2018 · 905febf · 905febf
1 parent 496bcce
commit 905febf
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/gpu/drm/i915/intel_wopcm.c b/drivers/gpu/drm/i915/intel_wopcm.c
@@ -168,6 +168,9 @@ int intel_wopcm_init(struct intel_wopcm *wopcm)
 
 	GEM_BUG_ON(!wopcm->size);
 
+	if (i915_inject_load_failure())
+		return -E2BIG;
+
 	if (guc_fw_size >= wopcm->size) {
 		DRM_ERROR("GuC FW (%uKiB) is too big to fit in WOPCM.",
 			  guc_fw_size / 1024);