diff mbox series

[4/8] accel/ivpu: Put NPU back to D3hot after failed resume

Message ID 20240402104929.941186-5-jacek.lawrynowicz@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series accel/ivpu: Fixes for 6.9-rc3 | expand

Commit Message

Jacek Lawrynowicz April 2, 2024, 10:49 a.m. UTC 
Put NPU in D3hot after ivpu_resume() fails to power up the device.
This will assure that D3->D0 power cycle will be performed before
the next resume and also will minimize power usage in this corner case.

Fixes: 28083ff18d3f ("accel/ivpu: Fix DevTLB errors on suspend/resume and recovery")
Cc: <stable@vger.kernel.org> # v6.8+
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
---
 drivers/accel/ivpu/ivpu_pm.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Jeffrey Hugo April 5, 2024, 3:22 p.m. UTC | #1 
On 4/2/2024 4:49 AM, Jacek Lawrynowicz wrote:
> Put NPU in D3hot after ivpu_resume() fails to power up the device.
> This will assure that D3->D0 power cycle will be performed before
> the next resume and also will minimize power usage in this corner case.
> 
> Fixes: 28083ff18d3f ("accel/ivpu: Fix DevTLB errors on suspend/resume and recovery")
> Cc: <stable@vger.kernel.org> # v6.8+
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>

Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
diff mbox series

Patch

diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c
index 325b82f8d971..ba51781b5896 100644
--- a/drivers/accel/ivpu/ivpu_pm.c
+++ b/drivers/accel/ivpu/ivpu_pm.c
@@ -97,6 +97,7 @@  static int ivpu_resume(struct ivpu_device *vdev)
 	ivpu_mmu_disable(vdev);
 err_power_down:
 	ivpu_hw_power_down(vdev);
+	pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
 
 	if (!ivpu_fw_is_cold_boot(vdev)) {
 		ivpu_pm_prepare_cold_boot(vdev);