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authorOmer Shpigelman <oshpigelman@habana.ai>2020-01-05 09:05:45 +0000
committerOded Gabbay <oded.gabbay@gmail.com>2020-02-11 11:12:47 +0200
commita37e47192dfa98f79a0cd5ab991c224b5980c982 (patch)
tree2a30fb39b4384bf4914f9d540ba2aaed0779ed28 /drivers/misc
parent908087ffbe896c100ed73d5f0ce11a5b7264af4a (diff)
downloadlinux-next-a37e47192dfa98f79a0cd5ab991c224b5980c982.tar.gz
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>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/habanalabs/device.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c
index 166883b64725..b680b0caa69b 100644
--- 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;