intel_crtc_for_pipe() may return NULL in teardown/error paths.
Add a NULL check in intel_wait_for_vblank_if_active() to avoid
dereferencing a missing CRTC and rare NULL deref panics.
Fixes: 92e9624ad946 ("drm/i915/crtc: un-inline some crtc functions and move to
intel_crtc.[ch]")
Signed-off-by: Kaushlendra Kumar <[email protected]>
---
drivers/gpu/drm/i915/display/intel_crtc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c
b/drivers/gpu/drm/i915/display/intel_crtc.c
index 9d2a23c96c61..9eb158737c1c 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -74,7 +74,7 @@ void intel_wait_for_vblank_if_active(struct intel_display
*display,
{
struct intel_crtc *crtc = intel_crtc_for_pipe(display, pipe);
- if (crtc->active)
+ if (crtc && crtc->active)
intel_crtc_wait_for_next_vblank(crtc);
}
--
2.34.1
