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Thomas Weißschuh 270e5c576a hwmon: (powerz) Avoid cacheline sharing for DMA buffer 
[ Upstream commit 3023c050af ]

Depending on the architecture the transfer buffer may share a cacheline
with the following mutex. As the buffer may be used for DMA, that is
problematic.

Use the high-level DMA helpers to make sure that cacheline sharing can
not happen.

Also drop the comment, as the helpers are documentation enough.

https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org

Fixes: 4381a36abd ("hwmon: add POWER-Z driver")
Cc: stable@vger.kernel.org # ca085faabb: dma-mapping: add __dma_from_device_group_begin()/end()
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20260408-powerz-cacheline-alias-v1-1-1254891be0dd@weissschuh.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-05-14 15:29:28 +02:00
..
occ
hwmon: (occ) Fix division by zero in occ_show_power_1()
2026-04-11 14:24:41 +02:00
peci
hwmon: (peci/cputemp) Fix off-by-one in cputemp_is_visible()
2026-04-02 13:09:43 +02:00
pmbus
hwmon: (tps53679) Fix device ID comparison and printing in tps53676_identify()
2026-04-11 14:24:39 +02:00
abituguru3.c
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abituguru.c
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acpi_power_meter.c
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ad7314.c
hwmon: (ad7314) Validate leading zero bits and return error
2025-03-13 13:02:05 +01:00
ad7414.c
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ad7418.c
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adc128d818.c
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adcxx.c
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adm1025.c
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adm1026.c
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adm1029.c
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adm1031.c
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adm1177.c
hwmon: (adm1177) fix sysfs ABI violation and current unit conversion
2026-04-02 13:09:40 +02:00
adm9240.c
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ads7828.c
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ads7871.c
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adt7x10.c
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adt7x10.h
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adt7310.c
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adt7410.c
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adt7411.c
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adt7462.c
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adt7470.c
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adt7475.c
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aht10.c
hwmon: (aht10) Fix initialization commands for AHT20
2026-03-13 17:20:37 +01:00
amc6821.c
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applesmc.c
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aquacomputer_d5next.c
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as370-hwmon.c
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asb100.c
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asc7621.c
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aspeed-g6-pwm-tach.c
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aspeed-pwm-tacho.c
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asus_atk0110.c
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asus_rog_ryujin.c
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asus_wmi_sensors.c
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asus-ec-sensors.c
hwmon: (asus-ec-sensors) increase timeout for locking ACPI mutex
2025-11-13 15:34:07 -05:00
atxp1.c
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axi-fan-control.c
hwmon: axi-fan: don't use driver_override as IRQ name
2026-04-02 13:09:25 +02:00
bt1-pvt.c
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bt1-pvt.h
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chipcap2.c
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coretemp.c
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corsair-cpro.c
hwmon: (corsair-cpro) Validate the size of the received input buffer
2025-07-24 08:56:32 +02:00
corsair-psu.c
hwmon: (corsair-psu) Close HID device on probe errors
2026-05-14 15:29:22 +02:00
cros_ec_hwmon.c
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da9052-hwmon.c
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da9055-hwmon.c
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dell-smm-hwmon.c
hwmon: (dell-smm) Add support for Dell OptiPlex 7080
2026-03-04 07:21:08 -05:00
dme1737.c
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drivetemp.c
hwmon: (drivetemp) Set scsi command timeout to 10s
2025-02-01 18:39:36 +01:00
ds620.c
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ds1621.c
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emc6w201.c
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emc1403.c
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emc2103.c
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emc2305.c
hwmon: (emc2305) Set initial PWM minimum value during probe based on thermal state
2025-08-20 18:30:41 +02:00
f71805f.c
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f71882fg.c
hwmon: (f71882fg) Add F81968 support
2026-03-04 07:21:08 -05:00
f75375s.c
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fam15h_power.c
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fschmd.c
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ftsteutates.c
hwmon: (ftsteutates) Fix TOCTOU race in fts_read()
2025-06-27 11:11:21 +01:00
g760a.c
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g762.c
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gigabyte_waterforce.c
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gl518sm.c
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gl520sm.c
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gpio-fan.c
hwmon: (gpio-fan) Add missing mutex locks
2025-05-29 11:02:33 +02:00
gsc-hwmon.c
hwmon: (gsc-hwmon) fix fan pwm setpoint show functions
2025-08-28 16:30:58 +02:00
gxp-fan-ctrl.c
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hih6130.c
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hp-wmi-sensors.c
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hs3001.c
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hwmon-vid.c
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hwmon.c
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i5k_amb.c
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i5500_temp.c
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ibmaem.c
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ibmpex.c
Revert "hwmon: (ibmpex) fix use-after-free in high/low store"
2026-03-04 07:19:57 -05:00
ibmpowernv.c
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iio_hwmon.c
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ina2xx.c
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ina209.c
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ina238.c
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ina3221.c
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intel-m10-bmc-hwmon.c
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it87.c
hwmon: (it87) Check the it87_lock() return value
2026-03-13 17:20:38 +01:00
jc42.c
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k8temp.c
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k10temp.c
hwmon: (k10temp) Add device ID for Strix Halo
2025-11-13 15:34:04 -05:00
Kconfig
hwmon: (aht10) Add support for dht20
2026-03-13 17:20:37 +01:00
lan966x-hwmon.c
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lenovo-ec-sensors.c
hwmon: (lenovo-ec-sensors) Update P8 supprt
2025-11-13 15:34:04 -05:00
lineage-pem.c
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lm63.c
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lm70.c
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lm73.c
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lm75.c
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lm75.h
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lm77.c
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lm78.c
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lm80.c
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lm83.c
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lm85.c
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lm87.c
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lm90.c
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lm92.c
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lm93.c
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lm95234.c
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lm95241.c
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lm95245.c
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lochnagar-hwmon.c
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ltc2945.c
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ltc2947-core.c
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ltc2947-i2c.c
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ltc2947-spi.c
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ltc2947.h
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ltc2990.c
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ltc2991.c
hwmon: (ltc2991) Fix mixed signed/unsigned in DIV_ROUND_CLOSEST
2025-01-23 17:22:54 +01:00
ltc2992.c
hwmon: (ltc2992) Fix u32 overflow in power read path
2026-05-14 15:29:22 +02:00
ltc4151.c
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ltc4215.c
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ltc4222.c
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ltc4245.c
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ltc4260.c
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ltc4261.c
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ltc4282.c
hwmon: (ltc4282): Fix reset_history file permissions
2026-01-08 10:14:05 +01:00
ltq-cputemp.c
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Makefile
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max127.c
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max197.c
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max1111.c
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max1619.c
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max1668.c
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max6620.c
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max6621.c
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max6639.c
hwmon: (max6639) Fix pulses-per-revolution implementation
2026-03-25 11:08:57 +01:00
max6650.c
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max6697.c
hwmon: (max6697) fix regmap leak on probe failure
2026-01-08 10:14:30 +01:00
max16065.c
hwmon: (max16065) Use READ/WRITE_ONCE to avoid compiler optimization induced race
2026-03-13 17:20:30 +01:00
max31722.c
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max31730.c
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max31760.c
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max31790.c
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max31827.c
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mc34vr500.c
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mc13783-adc.c
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mcp3021.c
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menf21bmc_hwmon.c
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mlxreg-fan.c
hwmon: (mlxreg-fan) Separate methods of fan setting coming from different subsystems
2025-10-15 12:00:03 +02:00
mr75203.c
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nct6683.c
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nct6775-core.c
hwmon: (nct6775-core) Fix out of bounds access for NCT679{8,9}
2025-04-10 14:39:31 +02:00
nct6775-i2c.c
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nct6775-platform.c
hwmon: (nct6775) Add ASUS Pro WS WRX90E-SAGE SE
2026-03-04 07:21:08 -05:00
nct6775.h
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nct7802.c
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nct7904.c
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npcm750-pwm-fan.c
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nsa320-hwmon.c
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ntc_thermistor.c
hwmon: (ntc_thermistor) Fix the ncpXXxh103 sensor table
2025-03-13 13:02:04 +01:00
nzxt-kraken2.c
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nzxt-kraken3.c
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nzxt-smart2.c
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oxp-sensors.c
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pc87360.c
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pc87427.c
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pcf8591.c
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powerz.c
hwmon: (powerz) Avoid cacheline sharing for DMA buffer
2026-05-14 15:29:28 +02:00
powr1220.c
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pt5161l.c
hwmon: (pt5161l) Fix bugs in pt5161l_read_block_data()
2026-05-07 06:09:34 +02:00
pwm-fan.c
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raspberrypi-hwmon.c
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sbrmi.c
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sbtsi_temp.c
hwmon: (sbtsi_temp) AMD CPU extended temperature range support
2025-11-13 15:34:04 -05:00
sch56xx-common.c
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sch56xx-common.h
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sch5627.c
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sch5636.c
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scmi-hwmon.c
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scpi-hwmon.c
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sfctemp.c
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sg2042-mcu.c
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sht3x.c
hwmon: (sht3x) Fix error handling
2025-10-29 14:08:59 +01:00
sht4x.c
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sht15.c
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sht21.c
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shtc1.c
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sis5595.c
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sl28cpld-hwmon.c
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smpro-hwmon.c
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smsc47b397.c
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smsc47m1.c
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smsc47m192.c
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sparx5-temp.c
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spd5118.c
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stts751.c
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surface_fan.c
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surface_temp.c
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sy7636a-hwmon.c
hwmon: sy7636a: Fix regulator_enable resource leak on error path
2025-12-18 13:55:09 +01:00
tc74.c
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tc654.c
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thmc50.c
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tmp102.c
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tmp103.c
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tmp108.c
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tmp401.c
hwmon: (tmp401) fix overflow caused by default conversion rate value
2026-01-08 10:14:04 +01:00
tmp421.c
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tmp464.c
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tmp513.c
hwmon: (tmp513) Fix division of negative numbers
2025-01-23 17:22:53 +01:00
tps23861.c
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ultra45_env.c
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vexpress-hwmon.c
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via686a.c
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via-cputemp.c
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vt1211.c
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vt8231.c
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w83l785ts.c
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w83l786ng.c
hwmon: (w83l786ng) Convert macros to functions to avoid TOCTOU
2026-01-08 10:14:30 +01:00
w83627ehf.c
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w83627hf.c
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w83773g.c
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w83781d.c
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w83791d.c
hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
2026-01-08 10:14:30 +01:00
w83792d.c
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w83793.c
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w83795.c
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wm831x-hwmon.c
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wm8350-hwmon.c
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xgene-hwmon.c
hwmon: (xgene-hwmon) use appropriate type for the latency value
2025-05-29 11:03:00 +02:00