diff options
| author | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2023-10-03 08:42:13 +0200 |
|---|---|---|
| committer | Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com> | 2023-10-19 06:48:05 +0200 |
| commit | 828d63042aeca132a93938b98dc7f1a6c97bbc51 (patch) | |
| tree | 57dcec27997b2242171d2064414280c207a81f5a /drivers/accel/ivpu/ivpu_drv.c | |
| parent | fa8391ad68c16716e2c06ada397e99ceed2fb647 (diff) | |
| download | lwn-828d63042aeca132a93938b98dc7f1a6c97bbc51.tar.gz lwn-828d63042aeca132a93938b98dc7f1a6c97bbc51.zip | |
accel/ivpu: Don't enter d0i3 during FLR
Avoid HW bug on some platforms where we enter D0i3 state
and CPU is in low power states (C8 or above).
Fixes: 852be13f3bd3 ("accel/ivpu: Add PM support")
Cc: stable@vger.kernel.org
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231003064213.1527327-1-stanislaw.gruszka@linux.intel.com
Diffstat (limited to 'drivers/accel/ivpu/ivpu_drv.c')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_drv.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c index 467a60235370..7e9359611d69 100644 --- a/drivers/accel/ivpu/ivpu_drv.c +++ b/drivers/accel/ivpu/ivpu_drv.c @@ -367,14 +367,19 @@ int ivpu_boot(struct ivpu_device *vdev) return 0; } -int ivpu_shutdown(struct ivpu_device *vdev) +void ivpu_prepare_for_reset(struct ivpu_device *vdev) { - int ret; - ivpu_hw_irq_disable(vdev); disable_irq(vdev->irq); ivpu_ipc_disable(vdev); ivpu_mmu_disable(vdev); +} + +int ivpu_shutdown(struct ivpu_device *vdev) +{ + int ret; + + ivpu_prepare_for_reset(vdev); ret = ivpu_hw_power_down(vdev); if (ret) |