From: Tal Cohen <talco...@habana.ai>
When sending disable pci msg towards firmware, there is a
possibility that an EQ packet is already pending,
disabling EQ interrupt will prevent this from happening.
The interrupt will be re-enabled after reset.
Signed-off-by: Tal Cohen <talco...@habana.ai>
Reviewed-by: Ofir Bitton <obit...@habana.ai>
---
drivers/accel/habanalabs/common/device.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/accel/habanalabs/common/device.c
b/drivers/accel/habanalabs/common/device.c
index 5ca7014def00..78e65c6b76a7 100644
--- a/drivers/accel/habanalabs/common/device.c
+++ b/drivers/accel/habanalabs/common/device.c
@@ -1502,10 +1502,11 @@ static void send_disable_pci_access(struct hl_device
*hdev, u32 flags)
if (hl_fw_send_pci_access_msg(hdev,
CPUCP_PACKET_DISABLE_PCI_ACCESS, 0x0))
return;
- /* verify that last EQs are handled before disabled is set */
+ /* disable_irq also generates sync irq, this verifies that last
EQs are handled
+ * before disabled is set. The IRQ will be enabled again in
request_irq call.
+ */
if (hdev->cpu_queues_enable)
- synchronize_irq(pci_irq_vector(hdev->pdev,
- hdev->asic_prop.eq_interrupt_id));
+ disable_irq(pci_irq_vector(hdev->pdev,
hdev->asic_prop.eq_interrupt_id));
}
}
--
2.34.1
