habanalabs: check fence pointer before use

fence pointer can be NULL in this path, as shown by an earlier check.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/command_submission.c b/drivers/misc/habanalabs/common/command_submission.c
index c050f38..e5549a9 100644 (file)
--- a/drivers/misc/habanalabs/common/command_submission.c
+++ b/drivers/misc/habanalabs/common/command_submission.c
@@ -2581,7 +2581,7 @@ static int hl_cs_poll_fences(struct multi_cs_data *mcs_data, struct multi_cs_com
                         * For this we have to validate that the timestamp is
                         * earliest of all timestamps so far.
                         */
-                       if (mcs_data->update_ts &&
+                       if (fence && mcs_data->update_ts &&
                                        (ktime_compare(fence->timestamp, first_cs_time) < 0))
                                first_cs_time = fence->timestamp;
                        break;