renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-15 16:53:54 +08:00
Code

thermal: intel: int340x: processor_thermal: Fix additional deadlock

Browse Source 
Commit 52f04f10b9 ("thermal: intel: int340x: processor_thermal: Fix
deadlock") addressed deadlock issue during user space trip update. But it
missed a case when thermal zone device is disabled when user writes 0.

Call to thermal_zone_device_disable() also causes deadlock as it also
tries to lock tz->lock, which is already claimed by trip_point_temp_store()
in the thermal core code.

Remove call to thermal_zone_device_disable() in the function
sys_set_trip_temp(), which is called from trip_point_temp_store().

Fixes: 52f04f10b9 ("thermal: intel: int340x: processor_thermal: Fix deadlock")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: 6.2+ <stable@vger.kernel.org> # 6.2+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Srinivas Pandruvada 2023-03-29 08:22:07 -07:00 committed by Rafael J. Wysocki
parent 197b6b60ae
commit a57cc2dbb3
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
View File

@ -153,7 +153,6 @@ static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp
cancel_delayed_work_sync(&pci_info->work);
proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_INT_ENABLE_0, 0);
proc_thermal_mmio_write(pci_info, PROC_THERMAL_MMIO_THRES_0, 0);
thermal_zone_device_disable(tzd);
pci_info->stored_thres = 0;
return 0;
}