firefly-linux-kernel-4.4.55.git
10 years agohwmon: (max6697) Use of_property_read_bool at appropriate places
Axel Lin [Tue, 29 Jul 2014 15:06:22 +0000 (23:06 +0800)]
hwmon: (max6697) Use of_property_read_bool at appropriate places

This slightly improves readability.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (pwm-fan) Make SENSORS_PWM_FAN depend on OF
Axel Lin [Fri, 25 Jul 2014 14:19:35 +0000 (22:19 +0800)]
hwmon: (pwm-fan) Make SENSORS_PWM_FAN depend on OF

This driver won't instantiate if OF is not configured, thus add OF dependency.
Also add COMPILE_TEST to increase build testing coverage.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (pwm-fan) Remove duplicate dev_set_drvdata call
Axel Lin [Fri, 25 Jul 2014 03:12:26 +0000 (11:12 +0800)]
hwmon: (pwm-fan) Remove duplicate dev_set_drvdata call

The dev_set_drvdata() call is equivalent to the platform_set_drvdata() call in
next line.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (nct6775) Remove num_attr_groups from struct nct6775_data
Axel Lin [Thu, 24 Jul 2014 00:59:34 +0000 (08:59 +0800)]
hwmon: (nct6775) Remove num_attr_groups from struct nct6775_data

num_attr_groups is only used in nct6775_probe(), make it to be local variable.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (nct6775) Update module description and Kconfig for NCT6106D and NCT6791D
Axel Lin [Thu, 24 Jul 2014 00:58:24 +0000 (08:58 +0800)]
hwmon: (nct6775) Update module description and Kconfig for NCT6106D and NCT6791D

This driver also supports NCT6106D and NCT6791D, thus update module description
and Kconfig accordingly.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adt7411) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sat, 19 Jul 2014 14:42:33 +0000 (22:42 +0800)]
hwmon: (adt7411) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (g762) Convert to hwmon_device_register_with_groups
Axel Lin [Sat, 19 Jul 2014 14:29:44 +0000 (22:29 +0800)]
hwmon: (g762) Convert to hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and hwmon_device_register_with_groups() to simplify
the code a bit.

Use hwmon_device_register_with_groups rather than the device managed version to
ensure g762_of_clock_disable() is called after hwmon_device_unregister().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (emc2103) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sat, 19 Jul 2014 14:52:40 +0000 (22:52 +0800)]
hwmon: (emc2103) Convert to devm_hwmon_device_register_with_groups

Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (smsc47m1) Avoid forward declaration
Axel Lin [Thu, 17 Jul 2014 11:15:36 +0000 (19:15 +0800)]
hwmon: (smsc47m1) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (smsc47m192) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 17 Jul 2014 11:21:44 +0000 (19:21 +0800)]
hwmon: (smsc47m192) Convert to devm_hwmon_device_register_with_groups

Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (smsc47m192) Avoid forward declaration
Axel Lin [Thu, 17 Jul 2014 11:20:53 +0000 (19:20 +0800)]
hwmon: (smsc47m192) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (max1668) Make max1668_addr_list array const
Axel Lin [Fri, 18 Jul 2014 08:02:38 +0000 (16:02 +0800)]
hwmon: (max1668) Make max1668_addr_list array const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (max6639) Make normal_i2c array const
Axel Lin [Fri, 18 Jul 2014 07:56:59 +0000 (15:56 +0800)]
hwmon: (max6639) Make normal_i2c array const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (thmc50) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 17 Jul 2014 11:06:08 +0000 (19:06 +0800)]
hwmon: (thmc50) Convert to devm_hwmon_device_register_with_groups

Use devm_hwmon_device_register_with_groups() to simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (thmc50) Avoid forward declaration
Axel Lin [Thu, 17 Jul 2014 11:05:23 +0000 (19:05 +0800)]
hwmon: (thmc50) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adt7470) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 16 Jul 2014 15:12:54 +0000 (23:12 +0800)]
hwmon: (adt7470) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adt7470) Avoid forward declaration
Axel Lin [Wed, 16 Jul 2014 15:12:05 +0000 (23:12 +0800)]
hwmon: (adt7470) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adt7462) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 16 Jul 2014 15:10:46 +0000 (23:10 +0800)]
hwmon: (adt7462) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adt7462) Avoid forward declaration
Axel Lin [Wed, 16 Jul 2014 15:09:41 +0000 (23:09 +0800)]
hwmon: (adt7462) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: Add pwm-fan driver
Kamil Debski [Wed, 16 Jul 2014 15:46:42 +0000 (17:46 +0200)]
hwmon: Add pwm-fan driver

The pwm-fan driver enables control of fans connected to PWM lines.
This driver uses the PWM framework, so it is compatible with all
PWM devices that provide drivers through the PWM framework.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
[Guenter Roeck: Last argument to devm_of_pwm_get is pointer, use NULL]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (asc7621) Make map tables const
Axel Lin [Tue, 15 Jul 2014 11:15:01 +0000 (19:15 +0800)]
hwmon: (asc7621) Make map tables const

Map tables are never changed, so it is safe to make them const.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: George Joseph <george.joseph@fairview5.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ds620) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 9 Jul 2014 01:59:51 +0000 (09:59 +0800)]
hwmon: (ds620) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (max16065) Use PTR_ERR_OR_ZERO
Axel Lin [Fri, 11 Jul 2014 08:45:37 +0000 (16:45 +0800)]
hwmon: (max16065) Use PTR_ERR_OR_ZERO

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (sht21) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Fri, 11 Jul 2014 02:44:48 +0000 (10:44 +0800)]
hwmon: (sht21) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (fam15h_power) Remove needless pci dev id
Aravind Gopalakrishnan [Thu, 10 Jul 2014 22:16:00 +0000 (17:16 -0500)]
hwmon: (fam15h_power) Remove needless pci dev id

PCI_DEVICE_ID_AMD_16H_NB_F4 can be obtained from it's
definition in pci_ids.h. So we don't have to define it
again here.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (powerpc/powernv) hwmon driver for power, fan rpm, voltage and temperature
Neelesh Gupta [Tue, 8 Jul 2014 09:08:38 +0000 (14:38 +0530)]
hwmon: (powerpc/powernv) hwmon driver for power, fan rpm, voltage and temperature

This patch adds basic kernel support for reading power values, fan
speed rpm, voltage and temperature data on powernv platforms which
will be exported to user space through sysfs interface.

Test results:
-------------
[root@tul163p1 ~]# sensors
ibmpowernv-isa-0000
Adapter: ISA adapter
fan1:        5465 RPM  (min =    0 RPM)
fan2:        5152 RPM  (min =    0 RPM)
fan3:        5521 RPM  (min =    0 RPM)
fan4:        4891 RPM  (min =    0 RPM)
fan5:           0 RPM  (min =    0 RPM)
fan6:           0 RPM  (min =    0 RPM)
fan7:        7480 RPM  (min =    0 RPM)
fan8:        7944 RPM  (min =    0 RPM)
temp1:        +39.0°C  (high =  +0.0°C)
power1:      190.00 W

[root@tul163p1 ~]# ls /sys/devices/platform/
alarmtimer  ibmpowernv.0  power  rtc-generic  serial8250  uevent
[root@tul163p1 ~]# ls /sys/devices/platform/ibmpowernv.0/hwmon/hwmon0/
device     fan2_min fan4_min    fan6_min fan8_min   power
fan1_fault  fan3_fault fan5_fault  fan7_fault in1_fault  power1_input
fan1_input  fan3_input fan5_input  fan7_input in2_fault  subsystem
fan1_min    fan3_min fan5_min    fan7_min in3_fault  temp1_input
fan2_fault  fan4_fault fan6_fault  fan8_fault in4_fault  temp1_max
fan2_input  fan4_input fan6_input  fan8_input name    uevent
[root@tul163p1 ~]# ls /sys/class/hwmon/hwmon0/
device     fan2_min fan4_min    fan6_min fan8_min   power
fan1_fault  fan3_fault fan5_fault  fan7_fault in1_fault  power1_input
fan1_input  fan3_input fan5_input  fan7_input in2_fault  subsystem
fan1_min    fan3_min fan5_min    fan7_min in3_fault  temp1_input
fan2_fault  fan4_fault fan6_fault  fan8_fault in4_fault  temp1_max
fan2_input  fan4_input fan6_input  fan8_input name    uevent
[root@tul163p1 ~]#

Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (pmbus) Add tps40422 front-end driver
Zhu, Richard \(NSN - CN/Beijing\) [Tue, 1 Jul 2014 07:14:23 +0000 (07:14 +0000)]
hwmon: (pmbus) Add tps40422 front-end driver

For TI power management chip TPS40422, READ_TEMPERATURE_2 command is supported on
page 1 of the chip, but the original driver(pmbus.c) only tried to detect this command
on page 0, this will lead to a result that the temperature sensor in page 1 couldn't
be detected. This change is to isolate the tps40422 driver from pmbus.c into a solo
front-end driver.

Signed-off-by: Zhu Laiwen <richard.zhu@nsn.com>
[Guenter Roeck: Dropped unnecessary license text (fixes checkpatch warning)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (tmp421) Drop FSF mailing address
Guenter Roeck [Wed, 23 Apr 2014 05:16:33 +0000 (22:16 -0700)]
hwmon: (tmp421) Drop FSF mailing address

The FSF mailing address can and will change over time,
so drop it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
10 years agohwmon: (tmp421) Add support for TMP441 and TMP442
Guenter Roeck [Sat, 12 Apr 2014 23:12:06 +0000 (16:12 -0700)]
hwmon: (tmp421) Add support for TMP441 and TMP442

TMP441 and TMP442 are compatible to TMP421 and TMP422.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
10 years agohwmon: (tmp421) Strengthen detect function
Guenter Roeck [Tue, 22 Apr 2014 23:13:17 +0000 (16:13 -0700)]
hwmon: (tmp421) Strengthen detect function

Not all supported chips support the entire I2C address range.
Only accept specific chips at the addresses supported by that chip.
Check for invalid values in conversion rate and status registers.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
10 years agohwmon: (g760a) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 1 Jul 2014 02:57:38 +0000 (10:57 +0800)]
hwmon: (g760a) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (g760a) Avoid forward declaration
Axel Lin [Tue, 1 Jul 2014 02:55:55 +0000 (10:55 +0800)]
hwmon: (g760a) Avoid forward declaration

Move g760a_driver to proper place to avoid forward declaration.
Also move g760a_id table close to g760a_driver.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm9240) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 14:01:48 +0000 (22:01 +0800)]
hwmon: (adm9240) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lineage-pem) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sat, 5 Jul 2014 03:22:44 +0000 (11:22 +0800)]
hwmon: (lineage-pem) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (smm665) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 2 Jul 2014 12:26:32 +0000 (20:26 +0800)]
hwmon: (smm665) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm9240) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 13:59:49 +0000 (21:59 +0800)]
hwmon: (adm9240) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1031) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 13:57:44 +0000 (21:57 +0800)]
hwmon: (adm1031) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1031) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 13:56:33 +0000 (21:56 +0800)]
hwmon: (adm1031) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1026) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 13:53:01 +0000 (21:53 +0800)]
hwmon: (adm1026) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1026) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 13:51:43 +0000 (21:51 +0800)]
hwmon: (adm1026) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1025) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 13:49:27 +0000 (21:49 +0800)]
hwmon: (adm1025) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1025) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 13:48:15 +0000 (21:48 +0800)]
hwmon: (adm1025) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1021) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 13:45:33 +0000 (21:45 +0800)]
hwmon: (adm1021) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (gl520sm) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 01:50:13 +0000 (09:50 +0800)]
hwmon: (gl520sm) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (gl520sm) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 01:49:21 +0000 (09:49 +0800)]
hwmon: (gl520sm) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (gl518sm) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 3 Jul 2014 01:48:04 +0000 (09:48 +0800)]
hwmon: (gl518sm) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (gl518sm) Avoid forward declaration
Axel Lin [Thu, 3 Jul 2014 01:46:51 +0000 (09:46 +0800)]
hwmon: (gl518sm) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm93) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 2 Jul 2014 12:36:50 +0000 (20:36 +0800)]
hwmon: (lm93) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (w83791d) Fix smatch warning
Guenter Roeck [Mon, 30 Jun 2014 14:34:30 +0000 (07:34 -0700)]
hwmon: (w83791d) Fix smatch warning

smatch complains as follows when checking w83791d.c.

drivers/hwmon/w83791d.c:996 store_temp23() warn:
'32768' 32768 can't fit into 32767 'data->temp_add[nr][index]'

Fix by using DIV_ROUND_CLOSEST and clamp_val to convert the values.
While we are at it, modify other macros as well for consistency and
to make the code easier to understand.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm63) Fix smatch warnings
Guenter Roeck [Wed, 25 Jun 2014 15:08:35 +0000 (08:08 -0700)]
hwmon: (lm63) Fix smatch warnings

smatch complains as follows when checking lm63.c.

drivers/hwmon/lm63.c:594 set_temp11() warn:
'65504' 65504 can't fit into 32767 'data->temp11[nr]'
drivers/hwmon/lm63.c:596 set_temp11() warn:
'32768' 32768 can't fit into 32767 'data->temp11[nr]'

Fix by using DIV_ROUND_CLOSEST and clamp_val to convert the values.
While we are at it, modify other macros as well for consistency and
to make the code easier to understand.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: Make regmap configs const
Axel Lin [Wed, 2 Jul 2014 00:42:18 +0000 (08:42 +0800)]
hwmon: Make regmap configs const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (htu21) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sun, 29 Jun 2014 07:00:59 +0000 (15:00 +0800)]
hwmon: (htu21) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (emc6w201) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sun, 29 Jun 2014 03:32:01 +0000 (11:32 +0800)]
hwmon: (emc6w201) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (amc6821) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sun, 29 Jun 2014 02:33:34 +0000 (10:33 +0800)]
hwmon: (amc6821) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (amc6821) Avoid forward declaration
Axel Lin [Sun, 29 Jun 2014 02:32:36 +0000 (10:32 +0800)]
hwmon: (amc6821) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1029) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sun, 29 Jun 2014 01:42:17 +0000 (09:42 +0800)]
hwmon: (adm1029) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (adm1029) Avoid forward declarations
Axel Lin [Sun, 29 Jun 2014 01:41:08 +0000 (09:41 +0800)]
hwmon: (adm1029) Avoid forward declarations

Reorder functions to avoid forward declarations.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ad7418) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 1 Jul 2014 14:40:29 +0000 (22:40 +0800)]
hwmon: (ad7418) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ad7418) Avoid forward declaration
Axel Lin [Tue, 1 Jul 2014 14:39:08 +0000 (22:39 +0800)]
hwmon: (ad7418) Avoid forward declaration

Move ad7418_driver to proper place to avoid forward declaration.
Also move ad7418_init_client() close to ad7418_probe().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ad7414) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 1 Jul 2014 14:31:44 +0000 (22:31 +0800)]
hwmon: (ad7414) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ntc_thermistor) Support B57330V2103 from EPCOS
Johannes Pointner [Tue, 1 Jul 2014 06:05:52 +0000 (08:05 +0200)]
hwmon: (ntc_thermistor) Support B57330V2103 from EPCOS

This patch adds support for the ntc thermistor B57330V2103 from EPCOS.

Signed-off-by: Johannes Pointner <johannes.pointner@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agodevicetree: Add vendor prefix "epcos" to vendor-prefixes.txt
Johannes Pointner [Fri, 27 Jun 2014 17:53:53 +0000 (19:53 +0200)]
devicetree: Add vendor prefix "epcos" to vendor-prefixes.txt

This patch adds the vendor prefix for "epcos" to the vendor-prefixes.

Signed-off-by: Johannes Pointner <johannes.pointner@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (hih6130) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sun, 29 Jun 2014 06:45:54 +0000 (14:45 +0800)]
hwmon: (hih6130) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Iain Paton <ipaton0@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (tmp103) Add missing i2c_set_clientdata call in tmp103_probe
Axel Lin [Fri, 27 Jun 2014 14:49:29 +0000 (22:49 +0800)]
hwmon: (tmp103) Add missing i2c_set_clientdata call in tmp103_probe

Add missing i2c_set_clientdata() call in tmp103_probe, this makes the
dev_get_drvdata() call in tmp103_suspend/tmp103_resume return correct
address.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm75) Add support for TMP112
Frans Klaver [Thu, 26 Jun 2014 09:21:11 +0000 (11:21 +0200)]
hwmon: (lm75) Add support for TMP112

TMP112 is compatible to LM75.

Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (w83l786ng) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Wed, 25 Jun 2014 01:39:51 +0000 (09:39 +0800)]
hwmon: (w83l786ng) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (w83l786ng) Avoid forward declaration
Axel Lin [Wed, 25 Jun 2014 01:38:57 +0000 (09:38 +0800)]
hwmon: (w83l786ng) Avoid forward declaration

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Kevin Lo <kevlo@kevlo.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (fam15h_power) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Thu, 19 Jun 2014 15:29:11 +0000 (23:29 +0800)]
hwmon: (fam15h_power) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (wm8350) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 17 Jun 2014 15:12:08 +0000 (23:12 +0800)]
hwmon: (wm8350) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (wm831x) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 17 Jun 2014 15:10:55 +0000 (23:10 +0800)]
hwmon: (wm831x) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ads7828) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Tue, 17 Jun 2014 07:38:23 +0000 (15:38 +0800)]
hwmon: (ads7828) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (atxp1) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Fri, 6 Jun 2014 23:55:10 +0000 (07:55 +0800)]
hwmon: (atxp1) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups.
This simplifies the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: Driver for TI TMP103 temperature sensor
Heiko Schocher [Wed, 18 Jun 2014 05:37:17 +0000 (07:37 +0200)]
hwmon: Driver for TI TMP103 temperature sensor

Driver for the TI TMP103.

The TI TMP103 is similar to the TMP102.  It differs from the TMP102
by having only 8 bit registers.

Signed-off-by: Heiko Schocher <hs@denx.de>
[linux@roeck-us.net: Select REGMAP_I2C in Kconfig]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (gpio-fan) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sat, 14 Jun 2014 06:50:50 +0000 (14:50 +0800)]
hwmon: (gpio-fan) Convert to devm_hwmon_device_register_with_groups

This simplifies the code a bit and also ensures the attribute groups are
properly removed from sysfs when unload the module.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (twl4030-madc-hwmon) Convert to devm_hwmon_device_register_with_groups
Axel Lin [Sat, 14 Jun 2014 06:33:24 +0000 (14:33 +0800)]
hwmon: (twl4030-madc-hwmon) Convert to devm_hwmon_device_register_with_groups

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: Add support for Lattice's POWR1220 power manager IC
Scott Kanowitz [Thu, 12 Jun 2014 20:22:15 +0000 (16:22 -0400)]
hwmon: Add support for Lattice's POWR1220 power manager IC

This patch adds support for Lattice's POWR1220 power manager IC. Read
access to all the ADCs on the chip are supported through the hwmon
sysfs files.

Signed-off-by: Scott Kanowitz <skanowitz@echo360.com>
[Guenter Roeck: Removed some extra ( )]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm77) Prevent overflow problem when writing large limits
Axel Lin [Thu, 31 Jul 2014 14:58:04 +0000 (22:58 +0800)]
hwmon: (lm77) Prevent overflow problem when writing large limits

On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip.
Clamp the input values to the supported limits first to fix the problem.

For set_temp_hyst:
As Guenter pointed out that the temperature is read as unsigned and stored in
an unsigned long. This is wrong; nothing in the datasheet suggests that the
value (the absolute temperature) must be positive.
So change it to signed.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (amc6821) Fix possible race condition bug
Axel Lin [Thu, 31 Jul 2014 01:43:19 +0000 (09:43 +0800)]
hwmon: (amc6821) Fix possible race condition bug

Ensure mutex lock protects the read-modify-write period to prevent possible
race condition bug.
In additional, update data->valid should also be protected by the mutex lock.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm78) Fix overflow problems seen when writing large temperature limits
Guenter Roeck [Wed, 30 Jul 2014 03:48:59 +0000 (20:48 -0700)]
hwmon: (lm78) Fix overflow problems seen when writing large temperature limits

On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.

Cc: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (lm85) Fix various errors on attribute writes
Guenter Roeck [Wed, 30 Jul 2014 05:23:12 +0000 (22:23 -0700)]
hwmon: (lm85) Fix various errors on attribute writes

Temperature limit register writes did not account for negative numbers.
As a result, writing -127000 resulted in -126000 written into the
temperature limit register. This problem affected temp[1-3]_min,
temp[1-3]_max, temp[1-3]_auto_temp_crit, and temp[1-3]_auto_temp_min.

When writing pwm[1-3]_freq, a long variable was auto-converted into an int
without range check. Wiring values larger than MAXINT resulted in unexpected
register values.

When writing temp[1-3]_auto_temp_max, an unsigned long variable was
auto-converted into an int without range check. Writing values larger than
MAXINT resulted in unexpected register values.

vrm is an u8, so the written value needs to be limited to [0, 255].

Cc: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agohwmon: (ads1015) Fix off-by-one for valid channel index checking
Axel Lin [Wed, 30 Jul 2014 03:13:52 +0000 (11:13 +0800)]
hwmon: (ads1015) Fix off-by-one for valid channel index checking

Current code uses channel as array index, so the valid channel value is
0 .. ADS1015_CHANNELS - 1.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
10 years agoLinux 3.16-rc7
Linus Torvalds [Sun, 27 Jul 2014 19:41:55 +0000 (12:41 -0700)]
Linux 3.16-rc7

10 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Jul 2014 16:57:16 +0000 (09:57 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A bunch of fixes for perf and kprobes:
   - revert a commit that caused a perf group regression
   - silence dmesg spam
   - fix kprobe probing errors on ia64 and ppc64
   - filter kprobe faults from userspace
   - lockdep fix for perf exit path
   - prevent perf #GP in KVM guest
   - correct perf event and filters"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kprobes: Fix "Failed to find blacklist" probing errors on ia64 and ppc64
  kprobes/x86: Don't try to resolve kprobe faults from userspace
  perf/x86/intel: Avoid spamming kernel log for BTS buffer failure
  perf/x86/intel: Protect LBR and extra_regs against KVM lying
  perf: Fix lockdep warning on process exit
  perf/x86/intel/uncore: Fix SNB-EP/IVT Cbox filter mappings
  perf/x86/intel: Use proper dTLB-load-misses event on IvyBridge
  perf: Revert ("perf: Always destroy groups on exit")

10 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Jul 2014 16:53:01 +0000 (09:53 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "A couple of crash fixes, plus a fix that on 32 bits would cause a
  missing -ENOSYS for nonexistent system calls"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, cpu: Fix cache topology for early P4-SMT
  x86_32, entry: Store badsys error code in %eax
  x86, MCE: Robustify mcheck_init_device

10 years agoMerge branch 'vfs-for-3.16' of git://git.infradead.org/users/hch/vfs
Linus Torvalds [Sun, 27 Jul 2014 16:43:41 +0000 (09:43 -0700)]
Merge branch 'vfs-for-3.16' of git://git.infradead.org/users/hch/vfs

Pull vfs fixes from Christoph Hellwig:
 "A vfsmount leak fix, and a compile warning fix"

* 'vfs-for-3.16' of git://git.infradead.org/users/hch/vfs:
  fs: umount on symlink leaks mnt count
  direct-io: fix uninitialized warning in do_direct_IO()

10 years agoMerge tag 'firewire-fix-vt6315' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 27 Jul 2014 16:42:06 +0000 (09:42 -0700)]
Merge tag 'firewire-fix-vt6315' of git://git./linux/kernel/git/ieee1394/linux1394

Pull firewire regression fix from Stefan Richter:
 "IEEE 1394 (FireWire) subsystem fix: MSI don't work on VIA PCIe
  controllers with some isochronous workloads (regression since
  v3.16-rc1)"

* tag 'firewire-fix-vt6315' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: ohci: disable MSI for VIA VT6315 again

10 years agoFix gcc-4.9.0 miscompilation of load_balance() in scheduler
Linus Torvalds [Sat, 26 Jul 2014 21:52:01 +0000 (14:52 -0700)]
Fix gcc-4.9.0 miscompilation of load_balance()  in scheduler

Michel Dänzer and a couple of other people reported inexplicable random
oopses in the scheduler, and the cause turns out to be gcc mis-compiling
the load_balance() function when debugging is enabled.  The gcc bug
apparently goes back to gcc-4.5, but slight optimization changes means
that it now showed up as a problem in 4.9.0 and 4.9.1.

The instruction scheduling problem causes gcc to schedule a spill
operation to before the stack frame has been created, which in turn can
corrupt the spilled value if an interrupt comes in.  There may be other
effects of this bug too, but that's the code generation problem seen in
Michel's case.

This is fixed in current gcc HEAD, but the workaround as suggested by
Markus Trippelsdorf is pretty simple: use -fno-var-tracking-assignments
when compiling the kernel, which disables the gcc code that causes the
problem.  This can result in slightly worse debug information for
variable accesses, but that is infinitely preferable to actual code
generation problems.

Doing this unconditionally (not just for CONFIG_DEBUG_INFO) also allows
non-debug builds to verify that the debug build would be identical: we
can do

    export GCC_COMPARE_DEBUG=1

to make gcc internally verify that the result of the build is
independent of the "-g" flag (it will make the compiler build everything
twice, toggling the debug flag, and compare the results).

Without the "-fno-var-tracking-assignments" option, the build would fail
(even with 4.8.3 that didn't show the actual stack frame bug) with a gcc
compare failure.

See also gcc bugzilla:

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801

Reported-by: Michel Dänzer <michel@daenzer.net>
Suggested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Jakub Jelinek <jakub@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agomm: fix direct reclaim writeback regression
Hugh Dickins [Sat, 26 Jul 2014 19:58:23 +0000 (12:58 -0700)]
mm: fix direct reclaim writeback regression

Shortly before 3.16-rc1, Dave Jones reported:

  WARNING: CPU: 3 PID: 19721 at fs/xfs/xfs_aops.c:971
           xfs_vm_writepage+0x5ce/0x630 [xfs]()
  CPU: 3 PID: 19721 Comm: trinity-c61 Not tainted 3.15.0+ #3
  Call Trace:
    xfs_vm_writepage+0x5ce/0x630 [xfs]
    shrink_page_list+0x8f9/0xb90
    shrink_inactive_list+0x253/0x510
    shrink_lruvec+0x563/0x6c0
    shrink_zone+0x3b/0x100
    shrink_zones+0x1f1/0x3c0
    try_to_free_pages+0x164/0x380
    __alloc_pages_nodemask+0x822/0xc90
    alloc_pages_vma+0xaf/0x1c0
    handle_mm_fault+0xa31/0xc50
  etc.

 970   if (WARN_ON_ONCE((current->flags & (PF_MEMALLOC|PF_KSWAPD)) ==
 971                   PF_MEMALLOC))

I did not respond at the time, because a glance at the PageDirty block
in shrink_page_list() quickly shows that this is impossible: we don't do
writeback on file pages (other than tmpfs) from direct reclaim nowadays.
Dave was hallucinating, but it would have been disrespectful to say so.

However, my own /var/log/messages now shows similar complaints

  WARNING: CPU: 1 PID: 28814 at fs/ext4/inode.c:1881 ext4_writepage+0xa7/0x38b()
  WARNING: CPU: 0 PID: 27347 at fs/ext4/inode.c:1764 ext4_writepage+0xa7/0x38b()

from stressing some mmotm trees during July.

Could a dirty xfs or ext4 file page somehow get marked PageSwapBacked,
so fail shrink_page_list()'s page_is_file_cache() test, and so proceed
to mapping->a_ops->writepage()?

Yes, 3.16-rc1's commit 68711a746345 ("mm, migration: add destination
page freeing callback") has provided such a way to compaction: if
migrating a SwapBacked page fails, its newpage may be put back on the
list for later use with PageSwapBacked still set, and nothing will clear
it.

Whether that can do anything worse than issue WARN_ON_ONCEs, and get
some statistics wrong, is unclear: easier to fix than to think through
the consequences.

Fixing it here, before the put_new_page(), addresses the bug directly,
but is probably the worst place to fix it.  Page migration is doing too
many parts of the job on too many levels: fixing it in
move_to_new_page() to complement its SetPageSwapBacked would be
preferable, except why is it (and newpage->mapping and newpage->index)
done there, rather than down in migrate_page_move_mapping(), once we are
sure of success? Not a cleanup to get into right now, especially not
with memcg cleanups coming in 3.17.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 26 Jul 2014 01:17:38 +0000 (18:17 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "This is radeon and intel fixes, and is a small bit larger than I'm
  guessing you'd like it to be.

   - i915: fixes 32-bit highmem i915 blank screen, semaphore hang and
     runtime pm fix

   - radeon: gpuvm stability fix for hangs since 3.15, and hang/reboot
     regression on TN/RL devices,

  The only slightly controversial one is the change to use GB for the
  vm_size, which I'm letting through as its a new interface we defined
  in this merge window, and I'd prefer to have the released kernel have
  the final interface rather than changing it later"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: fix cut and paste issue for hawaii.
  drm/radeon: fix irq ring buffer overflow handling
  drm/i915: Simplify i915_gem_release_all_mmaps()
  drm/radeon: fix error handling in radeon_vm_bo_set_addr
  drm/i915: fix freeze with blank screen booting highmem
  drm/i915: Reorder the semaphore deadlock check, again
  drm/radeon/TN: only enable bapm on MSI systems
  drm/radeon: fix VM IB handling
  drm/radeon: fix handling of radeon_vm_bo_rmv v3
  drm/radeon: let's use GB for vm_size (v2)

10 years agoMerge tag 'sound-3.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Sat, 26 Jul 2014 01:03:45 +0000 (18:03 -0700)]
Merge tag 'sound-3.16-rc7' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Here contains only the fixes for the new FireWire bebob driver.  All
  fairly trivial and local fixes, so safe to apply"

* tag 'sound-3.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: bebob: Correction for return value of special_clk_ctl_put() in error
  ALSA: bebob: Correction for return value of .put callback
  ALSA: bebob: Use different labels for digital input/output
  ALSA: bebob: Fix a missing to unlock mutex in error handling case

10 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Sat, 26 Jul 2014 01:03:05 +0000 (18:03 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Fixes to temperature limit and vrm write operations in smsc47m192
  driver"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (smsc47m192) Fix temperature limit and vrm write operations

10 years agoparport: fix menu breakage
Randy Dunlap [Sat, 26 Jul 2014 00:07:47 +0000 (17:07 -0700)]
parport: fix menu breakage

Do not split the PARPORT-related symbols with the new kconfig
symbol ARCH_MIGHT_HAVE_PC_PARPORT. The split was causing incorrect
display of these symbols -- they were not being displayed together
as they should be.

Fixes: d90c3eb31535 "Kconfig cleanup (PARPORT_PC dependencies)"
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: stable@vger.kernel.org # for 3.13, 3.14, 3.15
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge tag 'blackfin-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 26 Jul 2014 00:59:50 +0000 (17:59 -0700)]
Merge tag 'blackfin-3.16-fixes' of git://git./linux/kernel/git/realmz6/blackfin-linux

Pull blackfin fixes from Steven Miao:
 "smc nor flash PM fix, pinctrl group fix, update defconfig, and build
  fixes"

* tag 'blackfin-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/realmz6/blackfin-linux:
  blackfin: vmlinux.lds.S: reserve 32 bytes space at the end of data section for XIP kernel
  defconfig: BF609: update spi config name
  irq: blackfin sec: drop duplicated sec priority set
  blackfin: bind different groups of one pinmux function to different state name
  blackfin: fix some bf5xx boards build for missing <linux/gpio.h>
  pm: bf609: cleanup smc nor flash

10 years agoblackfin: vmlinux.lds.S: reserve 32 bytes space at the end of data section for XIP...
Steven Miao [Wed, 23 Jul 2014 09:28:25 +0000 (17:28 +0800)]
blackfin: vmlinux.lds.S: reserve 32 bytes space at the end of data section for XIP kernel

to collect some undefined section to the end of the data section and avoid section overlap

Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agodefconfig: BF609: update spi config name
Steven Miao [Fri, 25 Jul 2014 02:31:16 +0000 (10:31 +0800)]
defconfig: BF609: update spi config name

Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agoirq: blackfin sec: drop duplicated sec priority set
Steven Miao [Thu, 24 Jul 2014 08:10:19 +0000 (16:10 +0800)]
irq: blackfin sec: drop duplicated sec priority set

Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agoblackfin: bind different groups of one pinmux function to different state name
Sonic Zhang [Thu, 13 Feb 2014 10:52:34 +0000 (18:52 +0800)]
blackfin: bind different groups of one pinmux function to different state name

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agoblackfin: fix some bf5xx boards build for missing <linux/gpio.h>
Steven Miao [Wed, 16 Jul 2014 06:37:31 +0000 (14:37 +0800)]
blackfin: fix some bf5xx boards build for missing <linux/gpio.h>

Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agopm: bf609: cleanup smc nor flash
Steven Miao [Wed, 16 Jul 2014 06:23:08 +0000 (14:23 +0800)]
pm: bf609: cleanup smc nor flash

drop smc pin state change code, pin state will be saved in pinctrl-adi2 driver
cleanup nor flash init/exit for pm suspend/resume

Signed-off-by: Steven Miao <realmz6@gmail.com>
10 years agoMerge branch 'parisc-3.16-6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Fri, 25 Jul 2014 23:17:06 +0000 (16:17 -0700)]
Merge branch 'parisc-3.16-6' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "We have two trivial patches in here.  One removes the SA_RESTORER
  #define since on parisc we don't have the sa_restorer field in struct
  sigaction, the other patch removes an unnecessary memset().

  The SA_RESTORER removal patch is scheduled for stable trees, since
  without it some userspace apps don't build"

* 'parisc-3.16-6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Eliminate memset after alloc_bootmem_pages
  parisc: Remove SA_RESTORER define