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habanalabs: do not halt CoreSight during hard reset

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[ Upstream commit a37e47192dfa98f79a0cd5ab991c224b5980c982 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Omer Shpigelman 2020-01-05 09:05:45 +00:00 committed by Greg Kroah-Hartman
parent 4b183f6748
commit 83946b4c96
1 changed files with 3 additions and 1 deletions
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4
drivers/misc/habanalabs/device.c
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@ -600,7 +600,9 @@ 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;