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accel/ivpu: Fix PCI D0 state entry in resume

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In case of failed power up we end up left in PCI D3hot
state making it impossible to access NPU registers on retry.
Enter D0 state on retry before proceeding with power up sequence.

Fixes: 28083ff18d3f ("accel/ivpu: Fix DevTLB errors on suspend/resume and recovery")
Cc: <stable@vger.kernel.org> # v6.8+
Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240402104929.941186-4-jacek.lawrynowicz@linux.intel.com
This commit is contained in:
Wachowski, Karol 2024-04-02 12:49:24 +02:00 committed by Jacek Lawrynowicz
parent e3caadf1f9
commit 3534eacbf1
1 changed files with 3 additions and 3 deletions
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6
drivers/accel/ivpu/ivpu_pm.c
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@ -71,10 +71,10 @@ static int ivpu_resume(struct ivpu_device *vdev)
{
int ret;
pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D0);
pci_restore_state(to_pci_dev(vdev->drm.dev));
retry:
pci_restore_state(to_pci_dev(vdev->drm.dev));
pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D0);
ret = ivpu_hw_power_up(vdev);
if (ret) {
ivpu_err(vdev, "Failed to power up HW: %d\n", ret);