drm/i915: Warn if we receive an interrupt after freeing the buffer
This shouldn't happen as the buffer is freed after disable pipe CRCs,
but better be safe than sorry.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 0b21828..b201a21 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1197,6 +1197,11 @@
struct intel_pipe_crc_entry *entry;
int head, tail;
+ if (!pipe_crc->entries) {
+ DRM_ERROR("spurious interrupt\n");
+ return;
+ }
+
head = atomic_read(&pipe_crc->head);
tail = atomic_read(&pipe_crc->tail);