habanalabs: do not halt CoreSight during hard reset

During hard reset we must not write to the device.
Hence avoid halting CoreSight during user context close if it is done
during hard reset.
In addition, we must not re-enable clock gating afterwards as it was
deliberately disabled in the beginning of the hard reset flow.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c
index 166883b647252c963f1389b54d5872ff0808df12..b680b0caa69be91ab423391ea58e47724351e561 100644 (file)
--- a/drivers/misc/habanalabs/device.c
+++ b/drivers/misc/habanalabs/device.c
@@ -598,7 +598,9 @@ int hl_device_set_debug_mode(struct hl_device *hdev, bool enable)
                        goto out;
                }
 
-               hdev->asic_funcs->halt_coresight(hdev);
+               if (!hdev->hard_reset_pending)
+                       hdev->asic_funcs->halt_coresight(hdev);
+
                hdev->in_debug = 0;
 
                goto out;