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habanalabs: skip device idle check in hpriv_release if in reset 

When user context is released and hpriv_release() is called, there is a
device idle status check, to understand if user has left the device not
idle and then a reset is required.

However, if the user process is killed because of device hard reset,
the device at this point would always be not idle, because the device
engines were already forcefully halted.

Modify hpriv_release() to skip the idle check if reset is in progress.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tomer Tayar 2022-11-30 12:07:06 +02:00 committed by Oded Gabbay
parent 853413b234
commit 086ab54ac0
1 changed files with 4 additions and 2 deletions
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6
drivers/misc/habanalabs/common/device.c
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@ -428,8 +428,10 @@ static void hpriv_release(struct kref *ref)
*/
reset_device = hdev->reset_upon_device_release || hdev->reset_info.watchdog_active;
/* Unless device is reset in any case, check idle status and reset if device is not idle */
if (!reset_device && hdev->pdev && !hdev->pldm)
/* Check the device idle status and reset if not idle.
* Skip it if already in reset, or if device is going to be reset in any case.
*/
if (!hdev->reset_info.in_reset && !reset_device && hdev->pdev && !hdev->pldm)
device_is_idle = hdev->asic_funcs->is_device_idle(hdev, idle_mask,
HL_BUSY_ENGINES_MASK_EXT_SIZE, NULL);
if (!device_is_idle) {