Ensure that the new dbuf state is not null. If so, throw
an error, discontinue to allocate ddb and return.
Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/skl_watermark.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index d58e667016e4..4ecf3b43d6d2 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -638,6 +638,9 @@ skl_crtc_allocate_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc)
u32 start, end;
int ret;
+ if (IS_ERR(new_dbuf_state))
+ return PTR_ERR(new_dbuf_state);
+
if (new_dbuf_state->weight[pipe] == 0) {
skl_ddb_entry_init(&new_dbuf_state->ddb[pipe], 0, 0);
goto out;
--
2.34.1
