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
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pmbus
ab8500.c
abituguru3.c
abituguru.c
abx500.c
abx500.h
acpi_power_meter.c
ad7314.c
ad7414.c
ad7418.c
adc128d818.c
adcxx.c
adm1021.c
adm1025.c
adm1026.c
adm1029.c
adm1031.c
adm9240.c
ads1015.c
ads7828.c
ads7871.c
adt7x10.c
adt7x10.h
adt7310.c
adt7410.c
adt7411.c
adt7462.c
adt7470.c
adt7475.c
amc6821.c
applesmc.c
asb100.c
asc7621.c
asus_atk0110.c
atxp1.c
coretemp.c
da9052-hwmon.c
da9055-hwmon.c
dell-smm-hwmon.c
dme1737.c
ds620.c
ds1621.c
emc6w201.c
emc1403.c
emc2103.c
f71805f.c
f71882fg.c
f75375s.c
fam15h_power.c
fschmd.c
g760a.c
g762.c
gl518sm.c
gl520sm.c
gpio-fan.c
hih6130.c
hwmon-vid.c
hwmon.c
i5k_amb.c
i5500_temp.c
ibmaem.c
ibmpex.c
ibmpowernv.c
iio_hwmon.c
ina2xx.c
ina209.c
it87.c
jc42.c
jz4740-hwmon.c
k8temp.c
k10temp.c
Kconfig
lineage-pem.c
lm63.c
lm70.c
lm73.c
lm75.c
lm75.h
lm77.c
lm78.c
lm80.c
lm83.c
lm85.c
lm87.c
lm90.c
lm92.c
lm93.c
lm95234.c
lm95241.c
lm95245.c
ltc2945.c
ltc2990.c
ltc4151.c
ltc4215.c
ltc4222.c
ltc4245.c
ltc4260.c
ltc4261.c
Makefile
max197.c
max1111.c
max1619.c
max1668.c
max6639.c
max6642.c
max6650.c
max6697.c
max16065.c
max31722.c
max31790.c
mc13783-adc.c
mcp3021.c
menf21bmc_hwmon.c
nct6683.c
nct6775.c
nct7802.c
nct7904.c
nsa320-hwmon.c
ntc_thermistor.c
pc87360.c
pc87427.c
pcf8591.c
powr1220.c
pwm-fan.c
s3c-hwmon.c
sch56xx-common.c
sch56xx-common.h
sch5627.c
sch5636.c
scpi-hwmon.c
sht15.c
sht21.c
shtc1.c
sis5595.c
smm665.c
smsc47b397.c
smsc47m1.c
smsc47m192.c
tc74.c
thmc50.c
tmp102.c
tmp103.c
tmp401.c
tmp421.c
twl4030-madc-hwmon.c
ultra45_env.c
vexpress-hwmon.c
via686a.c
via-cputemp.c
vt1211.c
vt8231.c
w83l785ts.c
w83l786ng.c
w83627ehf.c
w83627hf.c
w83781d.c
w83791d.c
w83792d.c
w83793.c
w83795.c
wm831x-hwmon.c
wm8350-hwmon.c