kernel/linux.git/drivers/thermal, branch v6.6.142

thermal/drivers/spear: Fix error condition for reading st,thermal-flags

2026-05-23T11:03:05+00:00

[ Upstream commit da2c4f332a0504d9c284e7626a561d343c8d6f57 ] of_property_read_u32 returns 0 on success. The current check returns -EINVAL if the property is read successfully. Fix the check by removing ! from of_property_read_u32 Fixes: b9c7aff481f1 ("drivers/thermal/spear_thermal.c: add Device Tree probing capability") Signed-off-by: Gopi Krishna Menon Signed-off-by: Daniel Lezcano Suggested-by: Daniel Baluta Reviewed-by: Lukasz Luba Link: https://patch.msgid.link/20260327090526.59330-1-krishnagopi487@gmail.com Signed-off-by: Sasha Levin

thermal: core: Fix thermal zone governor cleanup issues

2026-05-17T15:13:48+00:00

[ Upstream commit 41ff66baf81c6541f4f985dd7eac4494d03d9440 ] If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak. In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case. Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration. Fixes: e33df1d2f3a0 ("thermal: let governors have private data for each thermal zone") Cc: All applicable Signed-off-by: Rafael J. Wysocki Link: https://patch.msgid.link/5092923.31r3eYUQgx@rafael.j.wysocki [ kept the `thermal_zone_create_device_groups(tz, mask)` signature when adding the new failure-path cleanup ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

thermal/drivers/sprd: Fix raw temperature clamping in sprd_thm_rawdata_to_temp

2026-05-17T15:13:40+00:00

commit b3414148bbc1f9cd56217e58a558c6ac4fd1b4a6 upstream. The raw temperature data was never clamped to SPRD_THM_RAW_DATA_LOW or SPRD_THM_RAW_DATA_HIGH because the return value of clamp() was not used. Fix this by assigning the clamped value to 'rawdata'. Casting SPRD_THM_RAW_DATA_LOW and SPRD_THM_RAW_DATA_HIGH to u32 is also redundant and can be removed. Fixes: 554fdbaf19b1 ("thermal: sprd: Add Spreadtrum thermal driver support") Signed-off-by: Thorsten Blum Signed-off-by: Daniel Lezcano Reviewed-by: Baolin Wang Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260307102422.306055-2-thorsten.blum@linux.dev Signed-off-by: Greg Kroah-Hartman

thermal/drivers/sprd: Fix temperature clamping in sprd_thm_temp_to_rawdata

2026-05-17T15:13:40+00:00

commit 83c0f9a5d679a6f8d84fc49b2f62ea434ccab4b6 upstream. The temperature was never clamped to SPRD_THM_TEMP_LOW or SPRD_THM_TEMP_HIGH because the return value of clamp() was not used. Fix this by assigning the clamped value to 'temp'. Casting SPRD_THM_TEMP_LOW and SPRD_THM_TEMP_HIGH to int is also redundant and can be removed. Fixes: 554fdbaf19b1 ("thermal: sprd: Add Spreadtrum thermal driver support") Signed-off-by: Thorsten Blum Signed-off-by: Daniel Lezcano Reviewed-by: Baolin Wang Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260307102422.306055-1-thorsten.blum@linux.dev Signed-off-by: Greg Kroah-Hartman

thermal: core: Fix thermal zone device registration error path

2026-04-11T12:19:32+00:00

commit 9e07e3b81807edd356e1f794cffa00a428eff443 upstream. If thermal_zone_device_register_with_trips() fails after registering a thermal zone device, it needs to wait for the tz->removal completion like thermal_zone_device_unregister(), in case user space has managed to take a reference to the thermal zone device's kobject, in which case thermal_release() may not be called by the error path itself and tz may be freed prematurely. Add the missing wait_for_completion() call to the thermal zone device registration error path. Fixes: 04e6ccfc93c5 ("thermal: core: Fix NULL pointer dereference in zone registration error path") Signed-off-by: Rafael J. Wysocki Cc: All applicable Reviewed-by: Lukasz Luba Tested-by: Lukasz Luba Link: https://patch.msgid.link/2849815.mvXUDI8C0e@rafael.j.wysocki Signed-off-by: Greg Kroah-Hartman

thermal: int340x: Fix sysfs group leak on DLVR registration failure

2026-03-04T12:20:56+00:00

[ Upstream commit 15176b818e048ccf6ef4b96db34eda7b7e98938a ] When DLVR sysfs group creation fails in proc_thermal_rfim_add(), the function returns immediately without cleaning up the FIVR group that may have been created earlier. Add proper error unwinding to remove the FIVR group before returning failure. Signed-off-by: Kaushlendra Kumar Acked-by: Srinivas Pandruvada Link: https://patch.msgid.link/LV3PR11MB876881B77D32A2854AD2908EF563A@LV3PR11MB8768.namprd11.prod.outlook.com Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin

thermal/drivers/qcom/lmh: Add missing IRQ includes

2025-10-15T09:57:54+00:00

[ Upstream commit b50b2c53f98fcdb6957e184eb488c16502db9575 ] As reported by LKP, the Qualcomm LMH driver needs to include several IRQ-related headers, which decrlare necessary IRQ functionality. Currently driver builds on ARM64 platforms, where the headers are pulled in implicitly by other headers, but fails to build on other platforms. Fixes: 53bca371cdf7 ("thermal/drivers/qcom: Add support for LMh driver") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202507270042.KdK0KKht-lkp@intel.com/ Signed-off-by: Dmitry Baryshkov Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20250728-lmh-scm-v2-2-33bc58388ca5@oss.qualcomm.com Signed-off-by: Sasha Levin

thermal/drivers/qcom: Make LMH select QCOM_SCM

2025-10-15T09:57:54+00:00

[ Upstream commit 57eda47bd14b0c2876f2db42e757c57b7a671965 ] The QCOM_SCM symbol is not user-visible, so it makes little sense to depend on it. Make LMH driver select QCOM_SCM as all other drivers do and, as the dependecy is now correctly handled, enable || COMPILE_TEST in order to include the driver into broader set of build tests. Fixes: 9e5a4fb84230 ("thermal/drivers/qcom/lmh: make QCOM_LMH depends on QCOM_SCM") Signed-off-by: Dmitry Baryshkov Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20250728-lmh-scm-v2-1-33bc58388ca5@oss.qualcomm.com Signed-off-by: Sasha Levin

thermal/drivers/mediatek/lvts: Disable low offset IRQ for minimum threshold

2025-09-09T16:56:29+00:00

[ Upstream commit fa17ff8e325a657c84be1083f06e54ee7eea82e4 ] In order to get working interrupts, a low offset value needs to be configured. The minimum value for it is 20 Celsius, which is what is configured when there's no lower thermal trip (ie the thermal core passes -INT_MAX as low trip temperature). However, when the temperature gets that low and fluctuates around that value it causes an interrupt storm. Prevent that interrupt storm by not enabling the low offset interrupt if the low threshold is the minimum one. Cc: stable@vger.kernel.org Fixes: 77354eaef821 ("thermal/drivers/mediatek/lvts_thermal: Don't leave threshold zeroed") Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Nícolas F. R. A. Prado Link: https://lore.kernel.org/r/20250113-mt8192-lvts-filtered-suspend-fix-v2-3-07a25200c7c6@collabora.com Signed-off-by: Daniel Lezcano [ Adapted interrupt mask definitions ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

thermal: sysfs: Return ENODATA instead of EAGAIN for reads

2025-08-28T14:28:17+00:00

[ Upstream commit 1a4aabc27e95674837f2e25f4ef340c0469e6203 ] According to POSIX spec, EAGAIN returned by read with O_NONBLOCK set means the read would block. Hence, the common implementation in nonblocking model will poll the file when the nonblocking read returns EAGAIN. However, when the target file is thermal zone, this mechanism will totally malfunction because thermal zone doesn't implement sysfs notification and thus the poll will never return. For example, the read in Golang implemnts such method and sometimes hangs at reading some thermal zones via sysfs. Change to return -ENODATA instead of -EAGAIN to userspace. Signed-off-by: Hsin-Te Yuan Link: https://patch.msgid.link/20250620-temp-v3-1-6becc6aeb66c@chromium.org Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin