BMC/Intel-BMC/linux.git/drivers/hwmon, branch dev-4.4

Merge tag 'v4.4.26' into dev-4.4

2016-10-21T01:33:35+00:00

This is the 4.4.26 stable release

hwmon: (adt7411) set bit 3 in CFG1 register

2016-10-07T13:23:42+00:00

commit b53893aae441a034bf4dbbad42fe218561d7d81f upstream. According to the datasheet you should only write 1 to this bit. If it is not set, at least AIN3 will return bad values on newer silicon revisions. Fixes: d84ca5b345c2 ("hwmon: Add driver for ADT7411 voltage and temperature sensor") Signed-off-by: Michael Walle Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

hwmon: (iio_hwmon) fix memory leak in name attribute

2016-09-07T06:32:46+00:00

commit 5d17d3b4bbf3becb89fd48b74340a50a39736f6d upstream. The "name" variable's memory is now freed when the device is destructed thanks to devm function. Signed-off-by: Quentin Schulz Reported-by: Guenter Roeck Fixes: e0f8a24e0edfd ("staging:iio::hwmon interface client driver.") Fixes: 61bb53bcbdd86 ("hwmon: (iio_hwmon) Add support for humidity sensors") Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.4.16' into dev-4.4

2016-08-04T03:54:41+00:00

This is the 4.4.16 stable release Signed-off-by: Joel Stanley

hwmon: (dell-smm) Cache fan_type() calls and change fan detection

2016-07-27T16:47:37+00:00

commit 5ce91714b0d8c0a3ff9b858966721f508351cf4c upstream. 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 f989e55452c7 ("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 Signed-off-by: Pali Rohár Link: https://bugzilla.kernel.org/show_bug.cgi?id=112021 Tested-by: Tolga Cakir Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

hwmon: (dell-smm) Disallow fan_type() calls on broken machines

2016-07-27T16:47:37+00:00

commit 2744d2fde00dc8bcc3679eb72c81a63058e90faa upstream. Some Dell machines have especially broken SMM or BIOS which cause that once fan_type() is called then CPU fan speed going randomly up and down. And for fixing this behaviour reboot is required. So this patch creates fan_type blacklist of affected Dell machines and disallow fan_type() call on them to prevent that erratic behaviour. Old blacklist which disabled loading driver on some machines added in commits a4b45b25f18d ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8100") and 6220f4ebd7b4 ("hwmon: (dell-smm) Blacklist Dell Studio XPS 8000") were moved to FAN_TYPE blacklist. Reported-by: Jan C Peters Signed-off-by: Pali Rohár Link: https://bugzilla.kernel.org/show_bug.cgi?id=100121 Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

hwmon: (dell-smm) Restrict fan control and serial number to CAP_SYS_ADMIN by default

2016-07-27T16:47:37+00:00

commit 7613663cc186f8f3c50279390ddc60286758001c upstream. For security reasons ordinary user must not be able to control fan speed via /proc/i8k by default. Some malicious software running under "nobody" user could be able to turn fan off and cause HW problems. So this patch changes default value of "restricted" parameter to 1. Also restrict reading of DMI_PRODUCT_SERIAL from /proc/i8k via "restricted" parameter. It is because non root user cannot read DMI_PRODUCT_SERIAL from sysfs file /sys/class/dmi/id/product_serial. Old non secure behaviour of file /proc/i8k can be achieved by loading this module with "restricted" parameter set to 0. Note that this patch has effects only for kernels compiled with CONFIG_I8K and only for file /proc/i8k. Hwmon interface provided by this driver was not changed and root access for setting fan speed was needed also before. Reported-by: Mario Limonciello Signed-off-by: Pali Rohár Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.4.15' into dev-4.4

2016-07-22T04:30:50+00:00

This is the 4.4.15 stable release

hwmon: (ads7828) Enable internal reference

2016-06-08T01:14:34+00:00

commit 7a18afe8097731b8ffb6cb5b2b3b418ded77c105 upstream. On ads7828 the internal reference defaults to off upon power up. When using internal reference, it needs to be turned on and the voltage needs to settle before normal conversion cycle can be started. Hence perform a dummy read in the probe to enable the internal reference allowing the voltage to settle before performing a normal read. Without this fix, the first read from the ADC when using internal reference always returns incorrect data. Signed-off-by: Akshay Bhat Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

hwmon: power8_occ_i2c: create hwmon sysfs attributes dynamically

2016-05-20T21:44:51+00:00

This patch fixes issue: https://github.com/openbmc/skeleton/issues/58. OCC sensor number varies for different platforms. The patch creates hwmon sysfs attributes dynamically, using sensor information get from OCC. Previously the sysfs attributes are created using statically defined data structures. Signed-off-by: Yi Li Signed-off-by: Joel Stanley