diff options
| author | Oded Gabbay <ogabbay@kernel.org> | 2021-01-18 21:39:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-02-07 15:37:17 +0100 |
| commit | 4587cb6f27a6f3518aa5195e6a2676ac02dac5aa (patch) | |
| tree | 0b04ab0d589b978f2e714d0ded30adb9d4dd8220 /drivers/misc | |
| parent | 90981a2171b9fdb6d20046f7ce3d70f8c460e53e (diff) | |
habanalabs: disable FW events on device removal
[ Upstream commit 2dc4a6d79168e7e426e8ddf8e7219c9ffd13b2b1 ]
When device is removed, we need to make sure the F/W won't send us
any more events because during the remove process we disable the
interrupts.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/device.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c index 09c328ee65da..71b3a4d5adc6 100644 --- a/drivers/misc/habanalabs/common/device.c +++ b/drivers/misc/habanalabs/common/device.c @@ -1425,6 +1425,15 @@ void hl_device_fini(struct hl_device *hdev) } } + /* Disable PCI access from device F/W so it won't send us additional + * interrupts. We disable MSI/MSI-X at the halt_engines function and we + * can't have the F/W sending us interrupts after that. We need to + * disable the access here because if the device is marked disable, the + * message won't be send. Also, in case of heartbeat, the device CPU is + * marked as disable so this message won't be sent + */ + hl_fw_send_pci_access_msg(hdev, CPUCP_PACKET_DISABLE_PCI_ACCESS); + /* Mark device as disabled */ hdev->disabled = true; |