accel/habanalabs: print return code when process termination fails

As part of driver teardown, we attempt to kill all user processes.
It shouldn't fail, but if it does we want to print the error code that
the kapi returned to us.

Signed-off-by: Koby Elbaz <[email protected]>
Reviewed-by: Oded Gabbay <[email protected]>
Signed-off-by: Oded Gabbay <[email protected]>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/accel/habanalabs/common/device.c b/drivers/accel/habanalabs/common/device.c
index 5973e4d64e19..764d40c0d666 100644
--- a/drivers/accel/habanalabs/common/device.c
+++ b/drivers/accel/habanalabs/common/device.c
@@ -1352,7 +1352,8 @@ static int device_kill_open_processes(struct hl_device *hdev, u32 timeout, bool
 			 * we don't need to kill it.
 			 */
 			dev_dbg(hdev->dev,
-				"Can't get task struct for user process, assuming process was killed from outside the driver\n");
+				"Can't get task struct for user process %d, assuming process was killed from outside the driver\n",
+				pid_nr(hpriv->taskpid));
 		}
 	}
 
@@ -2438,14 +2439,14 @@ void hl_device_fini(struct hl_device *hdev)
 	hdev->process_kill_trial_cnt = 0;
 	rc = device_kill_open_processes(hdev, HL_WAIT_PROCESS_KILL_ON_DEVICE_FINI, false);
 	if (rc) {
-		dev_crit(hdev->dev, "Failed to kill all open processes\n");
+		dev_crit(hdev->dev, "Failed to kill all open processes (%d)\n", rc);
 		device_disable_open_processes(hdev, false);
 	}
 
 	hdev->process_kill_trial_cnt = 0;
 	rc = device_kill_open_processes(hdev, 0, true);
 	if (rc) {
-		dev_crit(hdev->dev, "Failed to kill all control device open processes\n");
+		dev_crit(hdev->dev, "Failed to kill all control device open processes (%d)\n", rc);
 		device_disable_open_processes(hdev, true);
 	}