kernel/git/stable/linux.git/drivers/thermal, branch linux-6.15.y

thermal: sysfs: Return ENODATA instead of EAGAIN for reads

2025-08-20T16:35:56+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

thermal/drivers/qcom-spmi-temp-alarm: Enable stage 2 shutdown when required

2025-08-20T16:35:55+00:00

[ Upstream commit f8e157ff2df46ddabd930815d196895976227831 ] Certain TEMP_ALARM GEN2 PMIC peripherals need over-temperature stage 2 automatic PMIC partial shutdown. This will ensure that in the event of reaching the hotter stage 3 over-temperature threshold, repeated faults will be avoided during the automatic PMIC hardware full shutdown. Modify the stage 2 shutdown control logic to ensure that stage 2 shutdown is enabled on all affected PMICs. Read the digital major and minor revision registers to identify these PMICs. Signed-off-by: David Collins Signed-off-by: Anjelique Melendez Link: https://lore.kernel.org/r/20250710224555.3047790-2-anjelique.melendez@oss.qualcomm.com Signed-off-by: Daniel Lezcano Signed-off-by: Sasha Levin

thermal/drivers/mediatek/lvts: Remove unused lvts_debugfs_exit

2025-06-19T13:41:08+00:00

commit 3159c96ac2cb3a104ce8ee5b8a4afe98e4b8fcad upstream. When debugfs is disabled, the function has no reference any more: drivers/thermal/mediatek/lvts_thermal.c:266:13: error: 'lvts_debugfs_exit' defined but not used [-Werror=unused-function] 266 | static void lvts_debugfs_exit(struct lvts_domain *lvts_td) { } | ^~~~~~~~~~~~~~~~~ Fixes: ef280c17a840 ("thermal/drivers/mediatek/lvts: Fix debugfs unregister on failure") Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250505052502.1812867-1-arnd@kernel.org Signed-off-by: Daniel Lezcano Signed-off-by: Greg Kroah-Hartman

thermal/drivers/mediatek/lvts: Fix debugfs unregister on failure

2025-06-19T13:39:26+00:00

[ Upstream commit b49825661af93d9b8d7236f914803f136896f8fd ] When running the probe function for this driver, the function lvts_debugfs_init() gets called in lvts_domain_init() which, in turn, gets called in lvts_probe() before registering threaded interrupt handlers. Even though it's unlikely, the last call may fail and, if it does, there's nothing removing the already created debugfs folder and files. In order to fix that, instead of calling the lvts debugfs cleanup function upon failure, register a devm action that will take care of calling that upon failure or driver removal. Since devm was used, also delete the call to lvts_debugfs_exit() in the lvts_remove() callback, as now that's done automatically. Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver") Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20250402083852.20624-1-angelogioacchino.delregno@collabora.com Signed-off-by: Daniel Lezcano Signed-off-by: Sasha Levin

thermal: intel: x86_pkg_temp_thermal: Fix bogus trip temperature

2025-05-19T19:08:39+00:00

The tj_max value obtained from the Intel TCC library are in Celsius, whereas the thermal subsystem operates in milli-Celsius. This discrepancy leads to incorrect trip temperature calculations. Fix bogus trip temperature by converting tj_max to milli-Celsius Unit. Fixes: 8ef0ca4a177d ("Merge back other thermal control material for 6.3.") Signed-off-by: Zhang Rui Reported-by: zhang ning Closes: https://lore.kernel.org/all/TY2PR01MB3786EF0FE24353026293F5ACCD97A@TY2PR01MB3786.jpnprd01.prod.outlook.com/ Tested-by: zhang ning Cc: 6.3+ # 6.3+ Link: https://patch.msgid.link/20250519070901.1031233-1-rui.zhang@intel.com Signed-off-by: Rafael J. Wysocki

thermal: intel: int340x: Fix Panther Lake DLVR support

2025-04-15T16:57:25+00:00

Panther Lake uses the same DLVR register offsets as Lunar Lake, but the driver uses the default register offsets table for it by mistake. Move the selection of register offsets table from the actual attribute read/write callbacks to proc_thermal_rfim_add() and make it handle Panther Lake the same way as Lunar Lake. This way it is clean and in the future such issues can be avoided. Fixes: e50eeababa94 ("thermal: intel: int340x: Panther Lake DLVR support") Signed-off-by: Srinivas Pandruvada Link: https://patch.msgid.link/20250411115438.594114-1-srinivas.pandruvada@linux.intel.com [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki

thermal: intel: int340x: Add missing DVFS support flags

2025-04-15T16:47:31+00:00

DVFS (Dynamic Voltage Frequency Scaling) is still supported for DDR memory on Lunar Lake and Panther Lake. Add the missing flag PROC_THERMAL_FEATURE_DVFS. Signed-off-by: Srinivas Pandruvada Link: https://patch.msgid.link/20250410172943.577913-1-srinivas.pandruvada@linux.intel.com [ rjw: Subject edit ] Signed-off-by: Rafael J. Wysocki

Merge tag 'thermal-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2025-04-01T23:51:44+00:00

Pull more thermal control updates from Rafael Wysocki: "These are mostly assorted updates of thermal drivers used on ARM platforms: - Use dev_err_probe() helpers to simplify the init code in the Qoriq thermal driver (Frank Li) - Power down the Qoriq's TMU at suspend time (Alice Guo) - Add ipq5332, ipq5424 compatible to the QCom's tsens thermal driver and TSENS enable / calibration support for V2 (Praveenkumar I) - Add missing rk3328 mapping entry (Trevor Woerner) - Remove duplicate struct declaration from the thermal core header file (Xueqin Luo) - Disable the monitoring mode during suspend in the LVTS Mediatek driver to prevent temperature acquisition glitches (Nícolas F. R. A. Prado) - Disable Stage 3 thermal threshold in the LVTS Mediatek driver because it disables the suspend ability and does not have an interrupt handler (Nícolas F. R. A. Prado) - Fix low temperature offset interrupt in the LVTS Mediatek driver to prevent multiple interrupts from triggering when the system is at its normal functionning temperature (Nícolas F. R. A. Prado) - Enable interrupts in the LVTS Mediatek driver only on sensors that are in use (Nícolas F. R. A. Prado) - Add the BCM74110 compatible DT binding and the corresponding code to support a chip based on a different process node than previous chips (Florian Fainelli) - Correct indentation and style in DTS example (Krzysztof Kozlowski) - Unify hexadecimal annotatation in the rcar_gen3 driver (Niklas Söderlund) - Factor out the code logic to read fuses on Gen3 and Gen4 in the rcar_gen3 thermal driver (Niklas Söderlund) - Drop unused driver data from the QCom's spmi temperature alarm driver (Johan Hovold)" * tag 'thermal-6.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: thermal/drivers/qcom-spmi-temp-alarm: Drop unused driver data thermal: rcar_gen3: Reuse logic to read fuses on Gen3 and Gen4 thermal: rcar_gen3: Use lowercase hex constants dt-bindings: thermal: Correct indentation and style in DTS example thermal/drivers/brcmstb_thermal: Add support for BCM74110 dt-bindings: thermal: Update for BCM74110 thermal/drivers/mediatek/lvts: Only update IRQ enable for valid sensors thermal/drivers/mediatek/lvts: Start sensor interrupts disabled thermal/drivers/mediatek/lvts: Disable low offset IRQ for minimum threshold thermal/drivers/mediatek/lvts: Disable Stage 3 thermal threshold thermal/drivers/mediatek/lvts: Disable monitor mode during suspend thermal: core: Remove duplicate struct declaration thermal/drivers/rockchip: Add missing rk3328 mapping entry thermal/drivers/tsens: Add TSENS enable and calibration support for V2 dt-bindings: thermal: tsens: Add ipq5332, ipq5424 compatible thermal/drivers/qoriq: Power down TMU on system suspend thermal/drivers/qoriq: Use dev_err_probe() simplify the code

Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-04-01T17:06:52+00:00

Pull non-MM updates from Andrew Morton: - The series "powerpc/crash: use generic crashkernel reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. * tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) mailmap: consolidate email addresses of Alexander Sverdlin fs/procfs: fix the comment above proc_pid_wchan() relay: use kasprintf() instead of fixed buffer formatting resource: replace open coded variant of DEFINE_RES() resource: replace open coded variants of DEFINE_RES_*_NAMED() resource: replace open coded variant of DEFINE_RES_NAMED_DESC() resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED() samples: add hung_task detector mutex blocking sample hung_task: show the blocker task if the task is hung on mutex kexec_core: accept unaccepted kexec segments' destination addresses watchdog/perf: optimize bytes copied and remove manual NUL-termination lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap() lib/interval_tree: skip the check before go to the right subtree lib/interval_tree: add test case for span iteration lib/interval_tree: add test case for interval_tree_iter_xxx() helpers lib/rbtree: add random seed lib/rbtree: split tests lib/rbtree: enable userland test suite for rbtree related data structure checkpatch: describe --min-conf-desc-length scripts/gdb/symbols: determine KASLR offset on s390 ...

Merge tag 'thermal-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2025-03-25T22:13:31+00:00

Pull thermal control updates from Rafael Wysocki: "These include one thermal core fix for an issue leading to a NULL pointer dereference, a similar fix for the int340x thermal driver (even though the issue may not actually occur in practice in this particular case), and a bunch of cleanups, mostly related to replacing kzalloc() with kcalloc() where applicable. Summary: - Delay exposing thermal zone sysfs interface to prevent user space from accessing thermal zones that have not been completely initialized yet (Lucas De Marchi) - Check a pointer against NULL early in int3402_thermal_probe() to avoid a potential NULL pointer dereference (Chenyuan Yang) - Use kcalloc() instead of kzalloc() in some places in the thermal control subsystem (Lukasz Luba, Ethan Carter Edwards) - Fix a spelling mistake in a comment in the thermal core (Colin Ian King) - Clean up variable initialization in int340x_thermal_zone_add() (Christophe JAILLET)" * tag 'thermal-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: thermal: int340x: Add NULL check for adev thermal: core: Delay exposing sysfs interface thermal: core: Fix spelling mistake "Occurences" -> "Occurrences" thermal: intel: Clean up zone_trips[] initialization in int340x_thermal_zone_add() thermal: hisi: Use kcalloc() instead of kzalloc() with multiplication thermal: int340x: Use kcalloc() instead of kzalloc() with multiplication thermal: k3_j72xx_bandgap: Use kcalloc() instead of kzalloc() thermal/of: Use kcalloc() instead of kzalloc() with multiplication thermal/debugfs: replace kzalloc() with kcalloc() in thermal_debug_tz_add()