On 6/1/2023 8:59 AM, Alan Previn wrote:
In the case of failed suspend flow or cases where the kernel does not go
into full suspend but goes from suspend_prepare back to resume_complete,
we get called for a pm_complete but without runtime_pm guaranteed.
Thus, ensure we take the runtime_pm when calling intel_pxp_init_hw
from within intel_pxp_resume_complete.
Signed-off-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx>
---
drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
index 1a04067f61fc..1d184dcd63c7 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
@@ -36,6 +36,8 @@ void intel_pxp_suspend(struct intel_pxp *pxp)
void intel_pxp_resume_complete(struct intel_pxp *pxp)
{
+ intel_wakeref_t wakeref;
+
if (!intel_pxp_is_enabled(pxp))
return;
@@ -48,7 +50,8 @@ void intel_pxp_resume_complete()
if (!HAS_ENGINE(pxp->ctrl_gt, GSC0) && !pxp->pxp_component)
return;
- intel_pxp_init_hw(pxp);
+ with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref)
This is called from within the rpm resume path, so you can't do an rpm
get or it will deadlock. Maybe have:
__pxp_resume_complete(struct intel_pxp *pxp, bool needs_rpm);
intel_pxp_resume_complete(..)
{
return __pxp_resume_complete(pxp, true);
}
intel_pxp_runtime_resume(..)
{
return __pxp_resume_complete(pxp, false);
}
or something like that.
Daniele
+ intel_pxp_init_hw(pxp);
}
void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
base-commit: a66da4c33d8ede541aea9ba6d0d73b556a072d54
