drm/i915/gvt: grab runtime pm first for forcewake use
in workload_thread, it should grab runtime pm wakelock and later
uncore forcewake get will check rpm wakelock held successfully.
otherwise, sometimes, rpm wakelock not hold and print call trace below:
Call Trace:
intel_uncore_forcewake_get+0x15/0x20 [i915]
workload_thread+0x5f9/0x16f0 [i915]
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
? __switch_to_asm+0x34/0x70
? __switch_to+0x85/0x3f0
? __switch_to_asm+0x40/0x70
? do_wait_intr_irq+0x90/0x90
kthread+0x121/0x140
? intel_vgpu_clean_workloads+0x100/0x100 [i915]
? kthread_park+0x90/0x90
ret_from_fork+0x35/0x40
--[ end trace 86525f742a02e12c ]--
v2: adapted to use rpm structure.
Fixes: 251d46b0875c ("drm/i915/gvt: Pin the per-engine GVT shadow contexts")
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
1 file changed