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linux-stable/drivers/hwmon
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Adam Wujek 1047d4ac66 hwmon: (pmbus) Check PEC support before reading other registers 
[ Upstream commit d1baf7a3a3 ]

Make sure that the support of PEC is determined before the read of other
registers. Otherwise the validation of PEC can trigger an error on the read
of STATUS_BYTE or STATUS_WORD registers.

The problematic scenario is the following. A device with enabled PEC
support is up and running and a kernel driver is loaded.
Then the driver is unloaded (or device unbound), the HW device
is reconfigured externally (e.g. by i2cset) to advertise itself as not
supporting PEC. Without the move of the code, at the second load of
the driver (or bind) the STATUS_BYTE or STATUS_WORD register is always
read with PEC enabled, which is likely to cause a read error resulting
with fail of a driver load (or bind).

Signed-off-by: Adam Wujek <dev_public@wujek.eu>
Link: https://lore.kernel.org/r/20220519233334.438621-1-dev_public@wujek.eu
Fixes: 75d2b2b06b ("hwmon: (pmbus) disable PEC if not enabled")
Fixes: 4e5418f787 ("hwmon: (pmbus_core) Check adapter PEC support")
[groeck: Added Fixes: tags, dropped continuation line]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:23:02 +02:00
..
occ hwmon: (occ) Fix P10 VRM temp sensors 2021-10-02 04:35:09 -07:00
pmbus hwmon: (pmbus) Check PEC support before reading other registers 2022-06-09 10:23:02 +02:00
abituguru.c
abituguru3.c
acpi_power_meter.c hwmon: acpi_power_meter: Get rid of ACPICA message printing 2021-03-08 19:10:30 +01:00
ad7314.c
ad7414.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
ad7418.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adc128d818.c hwmon: Use kobj_to_dev() 2021-04-20 06:50:14 -07:00
adcxx.c
adm1021.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adm1025.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adm1026.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adm1029.c hwmon: (adm1029) use simple i2c probe 2020-09-23 09:42:39 -07:00
adm1031.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adm1177.c hwmon: (adm1177) Fix kerneldoc attribute formatting 2020-12-02 17:42:23 -08:00
adm9240.c hwmon: (adm9240) Fix writes into inX_max attributes 2021-05-12 18:53:11 -07:00
ads7828.c hwmon: use simple i2c probe function (take 2) 2020-09-23 09:42:40 -07:00
ads7871.c
adt7x10.c
adt7x10.h
adt7310.c
adt7410.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adt7411.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adt7462.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
adt7470.c hwmon: (adt7470) Fix warning on module removal 2022-05-12 12:30:11 +02:00
adt7475.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
aht10.c hwmon: (aht10) Unlock on error in aht10_read_values() 2021-01-27 17:44:19 -08:00
amc6821.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
applesmc.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
aquacomputer_d5next.c hwmon: add driver for Aquacomputer D5 Next 2021-08-28 08:53:30 -07:00
as370-hwmon.c
asb100.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
asc7621.c hwmon: (asc7621) use simple i2c probe 2020-09-23 09:42:40 -07:00
aspeed-pwm-tacho.c hwmon: (aspeed-pwm-tacho) Switch to using the new API kobj_to_dev() 2021-01-27 17:44:18 -08:00
asus_atk0110.c
atxp1.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
axi-fan-control.c hwmon: (axi-fan-control) Support temperature vs pwm points 2021-08-17 14:54:26 -07:00
bt1-pvt.c hwmon: (bt1-pvt) Remove redundant error printing in pvt_request_regs() 2021-06-17 04:21:45 -07:00
bt1-pvt.h hwmon: (bt1-pvt) Cache current update timeout 2020-10-04 08:40:10 -07:00
coretemp.c hwmon: Convert to new X86 CPU match macros 2020-03-24 21:33:36 +01:00
corsair-cpro.c hwmon: (corsair-cpro) Fix fall-through warnings for Clang 2021-05-17 19:50:23 -05:00
corsair-psu.c hwmon: (corsair-psu) fix plain integer used as NULL pointer 2021-12-17 10:30:12 +01:00
da9052-hwmon.c hwmon: (da9052) Switch to using the new API kobj_to_dev() 2021-02-11 20:28:56 -08:00
da9055-hwmon.c
dell-smm-hwmon.c hwmon: (dell-smm) Speed up setting of fan speed 2022-02-16 12:56:39 +01:00
dme1737.c hwmon: (dme1737) use simple i2c probe 2020-09-23 09:42:40 -07:00
drivetemp.c hwmon: drivetemp: fix typo temperatire => temperature 2020-12-02 17:42:23 -08:00
ds620.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
ds1621.c hwmon: (ds1621) Use kobj_to_dev() 2021-04-20 06:50:14 -07:00
emc6w201.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
emc1403.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
emc2103.c hwmon: (emc2103) use simple i2c probe 2020-09-23 09:42:40 -07:00
f71805f.c
f71882fg.c hwmon: (f71882fg) Fix negative temperature 2022-05-18 10:26:51 +02:00
f75375s.c hwmon: (f75375s) use simple i2c probe 2020-09-23 09:42:40 -07:00
fam15h_power.c hwmon: Replace deprecated CPU-hotplug functions. 2021-08-17 14:54:26 -07:00
fschmd.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
ftsteutates.c hwmon: (ftsteutates) Rudimentary typo fixes 2021-04-20 06:50:14 -07:00
g760a.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
g762.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
gl518sm.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
gl520sm.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
gpio-fan.c hwmon: (gpio-fan) Switch to using the new API kobj_to_dev() 2021-01-27 17:44:18 -08:00
gsc-hwmon.c hwmon: (gsc-hwmon) add fan sensor 2020-09-23 09:42:41 -07:00
hih6130.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
hwmon-vid.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hwmon.c hwmon: Handle failure to register sensor with thermal zone correctly 2022-03-02 11:47:54 +01:00
i5k_amb.c hwmon: (i5k_amb, vt8231) Drop uses of pci_read_config_*() return value 2020-08-04 14:24:39 -07:00
i5500_temp.c
ibmaem.c hwmon: (ibmaem) Replace zero-length array with flexible-array member 2020-03-08 20:35:46 -07:00
ibmpex.c
ibmpowernv.c hwmon: (ibmpowernv) Silence strncpy() warning 2020-12-02 17:42:23 -08:00
iio_hwmon.c hwmon: (iio_hwmon) Drop bogus __refdata annotation 2020-12-11 07:42:27 -08:00
ina2xx.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ina209.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ina3221.c hwmon: (ina3221) use CVRF only for single-shot conversion 2021-06-17 04:21:46 -07:00
intel-m10-bmc-hwmon.c hwmon: intel-m10-bmc-hwmon: add n5010 sensors 2021-08-17 14:54:25 -07:00
it87.c hwmon: Use kobj_to_dev() 2021-04-20 06:50:14 -07:00
jc42.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
k8temp.c
k10temp.c hwmon: (k10temp) Remove residues of current and voltage 2021-09-12 17:56:36 -07:00
Kconfig hwmon: (ltq-cputemp) restrict it to SOC_XWAY 2022-05-18 10:26:50 +02:00
lineage-pem.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
lm63.c hwmon: Use kobj_to_dev() 2021-04-20 06:50:14 -07:00
lm70.c hwmon: (lm70) Use SPI_MODE_X_MASK 2021-06-17 04:21:44 -07:00
lm73.c hwmon: (lm73) use simple i2c probe 2020-09-23 09:42:40 -07:00
lm75.c hwmon: (lm75) Add TI TMP1075 support 2021-06-17 04:21:44 -07:00
lm75.h hwmon: (lm75) Fix all coding-style warnings on lm75 driver 2020-05-22 06:28:38 -07:00
lm77.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm78.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm80.c Revert "hwmon: (lm80) fix a missing check of bus read in lm80 probe" 2021-05-13 17:30:01 +02:00
lm83.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm85.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm87.c hwmon: use simple i2c probe function (take 2) 2020-09-23 09:42:40 -07:00
lm90.c hwmon: (lm90) Fix sysfs and udev notifications 2022-02-01 17:27:12 +01:00
lm92.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm93.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm95234.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm95241.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lm95245.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
lochnagar-hwmon.c
ltc2945.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc2947-core.c hwmon: (ltc2947) Properly handle errors when looking for the external clock 2021-09-24 05:02:24 -07:00
ltc2947-i2c.c hwmon: (ltc2947) use simple i2c probe 2020-09-23 09:42:40 -07:00
ltc2947-spi.c
ltc2947.h
ltc2990.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc2992.c hwmon: (ltc2992) Put fwnode in error case during ->probe() 2021-05-10 08:02:15 -07:00
ltc4151.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc4215.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc4222.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc4245.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
ltc4260.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltc4261.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
ltq-cputemp.c
Makefile hwmon: add driver for Aquacomputer D5 Next 2021-08-28 08:53:30 -07:00
max127.c hwmon: (max127) Add Maxim MAX127 hardware monitoring driver 2020-12-02 17:42:24 -08:00
max197.c
max1111.c
max1619.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
max1668.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
max6621.c hwmon: (max6621) Fix fall-through warnings for Clang 2021-05-17 19:50:37 -05:00
max6639.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
max6642.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
max6650.c hwmon: (max6650) Switch to using the new API kobj_to_dev() 2021-01-27 17:44:18 -08:00
max6697.c hwmon: Use kobj_to_dev() 2021-04-20 06:50:14 -07:00
max16065.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
max31722.c hwmon: (max31722) Remove non-standard ACPI device IDs 2021-06-17 04:21:44 -07:00
max31730.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
max31790.c hwmon: (max31790) Detect and report zero fan speed 2021-06-17 04:21:46 -07:00
mc13783-adc.c
mcp3021.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
menf21bmc_hwmon.c
mlxreg-fan.c hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs 2021-09-16 14:48:20 -07:00
mr75203.c hwmon: (mr75203) fix wrong power-up delay value 2022-01-27 11:03:48 +01:00
nct6683.c hwmon: (nct6683) remove useless function 2021-04-20 06:50:14 -07:00
nct6775.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nct7802.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
nct7904.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
npcm750-pwm-fan.c
nsa320-hwmon.c
ntc_thermistor.c hwmon: (ntc_thermistor) Use library interpolation 2021-08-17 14:54:25 -07:00
nzxt-kraken2.c hwmon: add driver for NZXT Kraken X42/X52/X62/X72 2021-04-20 06:50:14 -07:00
pc87360.c hwmon: (pc87360) convert comma to semicolon 2021-01-27 17:44:17 -08:00
pc87427.c
pcf8591.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
powr1220.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
pwm-fan.c hwmon: (pwm-fan) Ensure the fan going on in .probe() 2021-12-14 10:57:14 +01:00
raspberrypi-hwmon.c hwmon: raspberry-pi: Clean-up few drivers by using managed work init 2021-03-23 15:22:40 +01:00
s3c-hwmon.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
sbrmi.c hwmon: Add support for SB-RMI power module 2021-08-17 14:54:25 -07:00
sbtsi_temp.c hwmon: (sbtsi) Add basic support for SB-TSI sensors 2020-12-12 08:32:35 -08:00
sch56xx-common.c hwmon: (sch56xx-common) Replace WDOG_ACTIVE with WDOG_HW_RUNNING 2022-04-08 14:23:07 +02:00
sch56xx-common.h hwmon: (sch56xx) Use devres functions for watchdog 2021-06-17 04:21:44 -07:00
sch5627.c hwmon: (sch56xx) Use devres functions for watchdog 2021-06-17 04:21:44 -07:00
sch5636.c hwmon: (sch56xx) Use devres functions for watchdog 2021-06-17 04:21:44 -07:00
scmi-hwmon.c hwmon: (scmi) port driver to the new scmi_sensor_proto_ops interface 2021-03-30 16:34:55 +01:00
scpi-hwmon.c hwmon: (scpi-hwmon) shows the negative temperature properly 2021-06-09 11:51:30 -07:00
sht3x.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
sht4x.c hwmon: (sht4x) Fix sht4x_read_values return value 2021-06-17 04:21:45 -07:00
sht15.c
sht21.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
shtc1.c hwmon: shtc1: add support for device tree bindings 2020-09-23 09:42:40 -07:00
sis5595.c
sl28cpld-hwmon.c hwmon: Add support for the sl28cpld hardware monitoring controller 2020-09-17 16:02:42 +01:00
smm665.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
smsc47b397.c
smsc47m1.c hwmon: (smsc47m1) Remove 'h' from printk format specifier 2021-01-27 17:44:17 -08:00
smsc47m192.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
sparx5-temp.c hwmon: (sparx5) Fix initial reading of temperature 2020-09-23 09:39:40 -07:00
stts751.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
tc74.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
tc654.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
thmc50.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
tmp102.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
tmp103.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
tmp108.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
tmp401.c hwmon: (tmp401) Add OF device ID table 2022-05-18 10:26:47 +02:00
tmp421.c hwmon: (tmp421) fix rounding for negative values 2021-09-24 05:00:53 -07:00
tmp513.c hwmon: (tmp513) fix spelling typo in comments 2020-10-04 08:40:10 -07:00
tps23861.c hwmon: (tps23861) correct shunt LSB values 2021-06-10 08:40:09 -07:00
ultra45_env.c
vexpress-hwmon.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00
via-cputemp.c hwmon: Convert to new X86 CPU match macros 2020-03-24 21:33:36 +01:00
via686a.c
vt1211.c
vt8231.c hwmon: (i5k_amb, vt8231) Drop uses of pci_read_config_*() return value 2020-08-04 14:24:39 -07:00
w83l785ts.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
w83l786ng.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
w83627ehf.c hwmon: (w83627ehf) Make DEVICE_ATTR_RO static 2021-08-17 14:54:25 -07:00
w83627hf.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
w83773g.c hwmon: use simple i2c probe function 2020-09-23 09:42:39 -07:00
w83781d.c hwmon: (w83781d) Match on device tree compatibles 2021-08-17 14:54:26 -07:00
w83791d.c hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field 2021-10-02 05:11:52 -07:00
w83792d.c hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field 2021-10-02 05:12:05 -07:00
w83793.c hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field 2021-10-02 05:14:11 -07:00
w83795.c hwmon: use simple i2c probe function (take 2) 2020-09-23 09:42:40 -07:00
wm831x-hwmon.c
wm8350-hwmon.c
xgene-hwmon.c hwmon: replace snprintf in show functions with sysfs_emit 2021-04-20 06:50:14 -07:00