diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-05 12:05:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-05 12:05:00 -0700 |
| commit | 817e1af1b37230ef6bb40bec6ccaf9a800ee6610 (patch) | |
| tree | e9601541887264f926fad191011a1cc34c0e05a6 /drivers | |
| parent | b49178e68fc7e3333c3d9f96eb09937ca84d05fd (diff) | |
| parent | 2492ba4cd06dd24076f44327174816b04cddde90 (diff) | |
Merge tag 'thermal-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in the Intel powerclamp driver
introduced during the 6.3 cycle and update MAINTAINERS to match recent
code changes.
Specifics:
- Fix NULL pointer access in the Intel powerclamp thermal driver that
occurs on attempts to set the cooling device state to 0 in the
default configuration (Srinivas Pandruvada)
- Drop the stale MAINTAINERS entry for the Intel Menlow thermal
driver that has been removed recently (Lukas Bulwahn)"
* tag 'thermal-6.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
MAINTAINERS: remove section INTEL MENLOW THERMAL DRIVER
thermal: intel: powerclamp: Fix NULL pointer access issue
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/thermal/intel/intel_powerclamp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/thermal/intel/intel_powerclamp.c b/drivers/thermal/intel/intel_powerclamp.c index 91fc7e239497..36243a3972fd 100644 --- a/drivers/thermal/intel/intel_powerclamp.c +++ b/drivers/thermal/intel/intel_powerclamp.c @@ -703,6 +703,10 @@ static int powerclamp_set_cur_state(struct thermal_cooling_device *cdev, new_target_ratio = clamp(new_target_ratio, 0UL, (unsigned long) (max_idle - 1)); + + if (powerclamp_data.target_ratio == new_target_ratio) + goto exit_set; + if (!powerclamp_data.target_ratio && new_target_ratio > 0) { pr_info("Start idle injection to reduce power\n"); powerclamp_data.target_ratio = new_target_ratio; |