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linux/drivers/hwmon
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Pali Rohár 5ce91714b0 hwmon: (dell-smm) Cache fan_type() calls and change fan detection 
On more Dell machines (e.g. Dell Precision M3800) fan_type() call is too
expensive (CPU is too long in SMM mode) and cause kernel to hang. This is
bug in Dell SMM or BIOS.

This patch caches type for each fan (as it should not change) and changes
the way how fan presense is detected. First it try function fan_status()
as was before commit f989e55452 ("i8k: Add support for fan labels"). And
if that fails fallback to fan_type(). *_status() functions can fail in case
fan is not currently accessible (e.g. present on GPU which is currently
turned off).

Reported-by: Tolga Cakir <cevelnet@gmail.com>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=112021
Cc: stable@vger.kernel.org # v4.0+, will need backport
Tested-by: Tolga Cakir <cevelnet@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-06-23 06:24:23 -07:00
..
pmbus hwmon: (adm1275) Add support for ADM1278 2016-03-05 06:36:03 -08:00
ab8500.c hwmon: (ab8500) Call kernel_power_off instead of pm_power_off 2014-10-03 08:19:02 -07:00
abituguru3.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
abituguru.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
abx500.c hwmon: (abx500) drop the use of IRQF_NO_SUSPEND 2015-10-14 07:57:14 -07:00
abx500.h hwmon: Add ST-Ericsson ABX500 hwmon driver 2013-04-16 18:27:52 -07:00
acpi_power_meter.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
ad7314.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
ad7414.c hwmon: (ad7414) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:35 -07:00
ad7418.c hwmon: (ad7418) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:35 -07:00
adc128d818.c hwmon: (adc128d818) Do proper sign extension 2015-01-25 21:24:00 -08:00
adcxx.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
adm1021.c hwmon: (adm1021) Avoid forward declaration 2014-08-04 07:01:36 -07:00
adm1025.c hwmon: (adm1025) Fix vrm write operation 2014-08-05 19:44:36 -07:00
adm1026.c hwmon: (adm1026) Fix vrm write operation 2014-08-05 19:44:36 -07:00
adm1029.c hwmon: (adm1029) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:35 -07:00
adm1031.c hwmon: (adm1031) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:37 -07:00
adm9240.c hwmon: (adm9240) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:37 -07:00
ads1015.c hwmon: (ads1015) Handle negative conversion values correctly 2016-02-18 19:14:04 -08:00
ads7828.c hwmon: (ads7828) Enable internal reference 2016-04-19 06:30:28 -07:00
ads7871.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
adt7x10.c hwmon: (adt7x10) Add alarm interrupt support 2013-04-07 21:16:38 -07:00
adt7x10.h hwmon: (adt7x10) Add alarm interrupt support 2013-04-07 21:16:38 -07:00
adt7310.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
adt7410.c hwmon: (adt7x10) Add alarm interrupt support 2013-04-07 21:16:38 -07:00
adt7411.c hwmon: (adt7411) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:40 -07:00
adt7462.c hwmon: (adt7462) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:39 -07:00
adt7470.c hwmon: (adt7470) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:39 -07:00
adt7475.c Update Jean Delvare's e-mail address 2014-01-29 20:40:08 +01:00
amc6821.c hwmon: (amc6821) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:35 -07:00
applesmc.c hwmon : (applesmc) Fix uninitialized variables warnings 2015-11-15 21:52:39 -08:00
asb100.c hwmon: (asb100) Fix vrm write operation 2014-08-05 19:44:36 -07:00
asc7621.c hwmon: (asc7621) Make map tables const 2014-08-04 07:01:38 -07:00
asus_atk0110.c fs.h, drivers/hwmon/asus_atk0110.c: fix DEFINE_SIMPLE_ATTRIBUTE semicolon definition and use 2014-08-06 18:01:23 -07:00
atxp1.c hwmon: (atxp1) Drop auto-detection 2015-05-31 22:58:36 -07:00
coretemp.c hwmon: (coretemp) Increase limit of maximum core ID from 32 to 128. 2015-10-14 07:57:14 -07:00
da9052-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
da9055-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
dell-smm-hwmon.c hwmon: (dell-smm) Cache fan_type() calls and change fan detection 2016-06-23 06:24:23 -07:00
dme1737.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
ds620.c hwmon: (ds620) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:38 -07:00
ds1621.c hwmon: (ds1621) Update zbits after conversion rate change 2014-08-28 11:18:47 -07:00
emc6w201.c hwmon: (emc6w201) Fix temperature limit range 2014-08-05 17:49:12 -07:00
emc1403.c hwmon: Make regmap configs const 2014-08-04 07:01:35 -07:00
emc2103.c hwmon: (emc2103) Fix typo in MODULE_PARM_DESC 2016-05-26 11:06:53 +02:00
f71805f.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
f71882fg.c hwmon: (f71882fg) Add support for f81768d 2015-08-09 13:44:26 -07:00
f75375s.c hwmon: (f75375s) Don't crash the kernel unnecessarily 2013-10-13 16:16:27 -07:00
fam15h_power.c hwmon: (fam15h_power) Disable preemption when reading registers 2016-06-07 20:11:10 -07:00
fschmd.c hwmon: Fix checkpatch warning 'quoted string split across lines' 2013-04-07 21:16:40 -07:00
g760a.c hwmon: (g760a) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:37 -07:00
g762.c hwmon: (g762) Drop owner assignment from struct i2c_driver 2015-08-09 13:44:26 -07:00
gl518sm.c hwmon: (gl518sm) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:36 -07:00
gl520sm.c hwmon: (gl520sm) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:36 -07:00
gpio-fan.c hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal hook 2016-02-19 17:14:25 -08:00
hih6130.c hwmon: (hih6130) Fix missing hih6130->write_length setting 2014-08-05 19:40:27 -07:00
hwmon-vid.c hwmon: (hwmon-vid) Add __maybe_unused attribute to dummy variable 2013-09-10 06:28:17 -07:00
hwmon.c hwmon: Do not accept invalid name attributes 2014-03-03 08:01:06 -08:00
i5k_amb.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
i5500_temp.c hwmon: (i5500_temp) Convert to use ATTRIBUTE_GROUPS macro 2015-01-24 14:16:22 +01:00
ibmaem.c hwmon: (ibmaem) constify aem_rw_sensor_template and aem_ro_sensor_template structures 2016-01-04 08:56:22 -08:00
ibmpex.c hwmon: (ibmpex) Allow format string checking 2015-03-09 09:59:35 -07:00
ibmpowernv.c hwmon: (ibmpowernv) Add OF compatibility table entry 2015-10-14 07:57:14 -07:00
iio_hwmon.c hwmon: (iio_hwmon) Allow the driver to accept hypen in device tree node names 2016-03-05 06:25:34 -08:00
ina2xx.c hwmon: (ina2xx) remove no longer used variable 'kind' 2015-10-31 08:46:01 -07:00
ina209.c hwmon: (ina209) Convert to use devm_hwmon_device_register_with_groups 2013-10-18 09:11:57 -07:00
it87.c hwmon: (it87) Add support for IT8628E 2016-04-19 06:32:38 -07:00
jc42.c hwmon: (jc42) Add support for additional IDT temperature sensors 2015-03-09 09:59:35 -07:00
jz4740-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
k8temp.c hwmon: remove DEFINE_PCI_DEVICE_TABLE macro 2014-01-14 21:36:30 -08:00
k10temp.c hwmon: (k10temp) Remove duplicate pci-id define 2015-11-09 10:14:29 +01:00
Kconfig hwmon: (it87) Add support for IT8628E 2016-04-19 06:32:38 -07:00
lineage-pem.c hwmon: (lineage-pem) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:37 -07:00
lm63.c hwmon: (lm63) Fix smatch warnings 2014-08-04 07:01:36 -07:00
lm70.c spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
lm73.c hwmon: (lm73) Convert to use devm_hwmon_device_register_with_groups 2013-10-13 16:16:28 -07:00
lm75.c hwmon: convert lm75 to use devm_thermal_zone_of_sensor_register 2016-05-17 07:28:25 -07:00
lm75.h hwmon: (lm75.h) Update header inclusion 2013-03-18 21:19:49 +01:00
lm77.c hwmon: (lm77) Prevent overflow problem when writing large limits 2014-07-31 09:41:46 -07:00
lm78.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
lm80.c hwmon: (lm80) Rearrange code to avoid forward declarations 2014-05-21 16:02:26 -07:00
lm83.c hwmon: (lm83) Convert to use devm_hwmon_device_register_with_groups 2014-05-21 16:02:26 -07:00
lm85.c hwmon: (lm85) use find_closest() in x_TO_REG() functions 2015-04-17 09:03:55 -04:00
lm87.c hwmon: (lm87) Fix vrm write operation 2014-08-05 19:44:42 -07:00
lm90.c hwmon: (lm90) use proper type for update_interval 2016-06-07 20:13:05 -07:00
lm92.c hwmon: (lm92) Prevent overflow problem when writing large limits 2014-08-05 17:48:52 -07:00
lm93.c hwmon: (lm93) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:36 -07:00
lm95234.c hwmon: (lm95234) Add support for LM95233 2014-12-02 06:11:53 -08:00
lm95241.c hwmon: (lm95241) Avoid initializing the same field twice 2014-03-03 08:01:04 -08:00
lm95245.c hwmon: (lm95245) Add support for LM95235 2014-12-02 03:44:18 -08:00
ltc2945.c hwmon: Make regmap configs const 2014-08-04 07:01:35 -07:00
ltc2990.c hwmon: Add LTC2990 sensor driver 2016-03-05 06:25:34 -08:00
ltc4151.c hwmon: (ltc4151) Convert to devm_hwmon_device_register_with_groups 2014-06-12 08:36:47 -07:00
ltc4215.c hwmon: (ltc4215) Convert to devm_hwmon_device_register_with_groups 2014-03-03 08:01:05 -08:00
ltc4222.c hwmon: Make regmap configs const 2014-08-04 07:01:35 -07:00
ltc4245.c hwmon: (ltc4245) Remove devicetree conditionals 2014-03-03 08:01:05 -08:00
ltc4260.c hwmon: Make regmap configs const 2014-08-04 07:01:35 -07:00
ltc4261.c hwmon: (ltc4261) fix coccinelle warnings 2013-10-18 09:12:00 -07:00
Makefile hwmon: (max31722) Add support for MAX31722/MAX31723 temperature sensors 2016-04-19 06:32:34 -07:00
max197.c hwmon: (max197) Constify platform_device_id 2015-05-31 22:58:36 -07:00
max1111.c hwmon: (max1111) Return -ENODEV from max1111_read_channel if not instantiated 2016-03-27 10:37:48 -07:00
max1619.c hwmon: (max1619) Convert to use devm_hwmon_device_register_with_groups 2014-05-21 16:02:25 -07:00
max1668.c hwmon: (max1668) Make max1668_addr_list array const 2014-08-04 07:01:39 -07:00
max6639.c hwmon: (max6639) Make normal_i2c array const 2014-08-04 07:01:39 -07:00
max6642.c Update Jean Delvare's e-mail address 2014-01-29 20:40:08 +01:00
max6650.c hwmon: (max6650) Introduce local 'dev' variable 2014-03-03 08:01:06 -08:00
max6697.c hwmon: (max6697) Use of_property_read_bool at appropriate places 2014-08-04 07:01:40 -07:00
max16065.c hwmon: (max16065) Use PTR_ERR_OR_ZERO 2014-08-04 07:01:38 -07:00
max31722.c hwmon: (max31722) Add support for MAX31722/MAX31723 temperature sensors 2016-04-19 06:32:34 -07:00
max31790.c hwmon: (max31790) Fix dereference of ERR_PTR 2015-10-14 07:57:14 -07:00
mc13783-adc.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
mcp3021.c hwmon: (mcp3021) Fix broken output scaling 2015-07-01 13:56:27 -07:00
menf21bmc_hwmon.c Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next 2014-11-03 19:53:56 -08:00
nct6683.c hwmon: (nct6683) Add basic support for NCT6683 on Mitac boards 2016-01-09 07:31:58 -08:00
nct6775.c hwmon: (nct6683,nct6775) constify sensor_template_group structures 2015-12-18 08:20:59 -08:00
nct7802.c hwmon: (nct7802) Add auto_point attributes 2015-08-09 13:44:27 -07:00
nct7904.c hwmon: (nct7904) Export I2C module alias information 2015-08-05 08:31:59 -07:00
nsa320-hwmon.c hwmon: Create an NSA320 hardware monitoring driver 2016-03-08 18:40:49 -08:00
ntc_thermistor.c hwmon: convert ntc_thermistor to use devm_thermal_zone_of_sensor_register 2016-05-17 07:28:25 -07:00
pc87360.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
pc87427.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
pcf8591.c Update Jean Delvare's e-mail address 2014-01-29 20:40:08 +01:00
powr1220.c hwmon: Add support for Lattice's POWR1220 power manager IC 2014-08-04 07:01:33 -07:00
pwm-fan.c hwmon: pwm-fan: Use pwm_get_args() where appropriate 2016-05-17 14:45:00 +02:00
s3c-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
sch56xx-common.c hwmon: (sch56xx) Drop watchdog driver data reference count callbacks 2015-12-29 20:36:04 +01:00
sch56xx-common.h
sch5627.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
sch5636.c hwmon: (sch5636) trivial fix of spelling mistake on revision 2016-04-25 07:26:29 -07:00
scpi-hwmon.c hwmon: convert scpi-hwmon to use devm_thermal_zone_of_sensor_register 2016-05-17 07:28:26 -07:00
sht15.c hwmon:change sht15_reverse() 2015-08-10 23:00:10 -07:00
sht21.c hwmon: (sht21) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:38 -07:00
shtc1.c hwmon: add support for Sensirion SHTC1 sensor 2014-06-12 08:36:48 -07:00
sis5595.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
smm665.c hwmon: (smm665) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:37 -07:00
smsc47b397.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
smsc47m1.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
smsc47m192.c hwmon: (smsc47m192) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:39 -07:00
tc74.c hwmon: add driver for Microchip TC74 2015-06-21 22:54:53 -07:00
thmc50.c hwmon: (thmc50) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:39 -07:00
tmp102.c hwmon: convert tmp102 to use devm_thermal_zone_of_sensor_register 2016-05-17 07:28:25 -07:00
tmp103.c hwmon: (tmp103) Fix resource leak bug in tmp103 temperature sensor driver 2014-09-22 11:11:48 -07:00
tmp401.c hwmon: (tmp401) Do not auto-detect chip on I2C address 0x37 2015-05-29 13:37:06 -07:00
tmp421.c hwmon: (tmp421) Drop FSF mailing address 2014-08-04 07:01:38 -07:00
twl4030-madc-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
ultra45_env.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
vexpress-hwmon.c hwmon: (vexpress) rename vexpress hwmon implementation 2016-03-05 06:25:33 -08:00
via686a.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
via-cputemp.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
vt1211.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
vt8231.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
w83l785ts.c hwmon: Avoid initializing the same field twice 2014-04-04 18:01:34 +02:00
w83l786ng.c hwmon: (w83l786ng) Convert to devm_hwmon_device_register_with_groups 2014-08-04 07:01:34 -07:00
w83627ehf.c hwmon: (w83627ehf) Use swap() in w82627ehf_swap_tempreg() 2015-07-03 14:39:06 +02:00
w83627hf.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
w83781d.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
w83791d.c hwmon: (w83791d) Fix vrm write operation 2014-08-05 19:44:42 -07:00
w83792d.c hwmon: (w83792d) Additional PWM outputs support 2015-07-03 14:39:05 +02:00
w83793.c hwmon: (w83793) Fix vrm write operation 2014-08-05 19:44:42 -07:00
w83795.c hwmon: (w83795) use find_closest_descending() in pwm_freq_to_reg() 2015-04-17 09:03:55 -04:00
wm831x-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00
wm8350-hwmon.c hwmon: drop owner assignment from platform_drivers 2014-10-20 16:20:36 +02:00