drm/i915: Don't call describe_obj on NULL pointers
Reported-by: Pavel Roskin <proski@gnu.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38777
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 4d46441..0a893f7 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1207,13 +1207,17 @@
if (ret)
return ret;
- seq_printf(m, "power context ");
- describe_obj(m, dev_priv->pwrctx);
- seq_printf(m, "\n");
+ if (dev_priv->pwrctx) {
+ seq_printf(m, "power context ");
+ describe_obj(m, dev_priv->pwrctx);
+ seq_printf(m, "\n");
+ }
- seq_printf(m, "render context ");
- describe_obj(m, dev_priv->renderctx);
- seq_printf(m, "\n");
+ if (dev_priv->renderctx) {
+ seq_printf(m, "render context ");
+ describe_obj(m, dev_priv->renderctx);
+ seq_printf(m, "\n");
+ }
mutex_unlock(&dev->mode_config.mutex);