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Commit Graph

3741 Commits

Author SHA1 Message Date
Björn Gerhart
f3d43e2e45 hwmon: (nct6775) Fix register address and added missed tolerance for nct6106
Fixed address of third NCT6106_REG_WEIGHT_DUTY_STEP, and
added missed NCT6106_REG_TOLERANCE_H.

Fixes: 6c009501ff ("hwmon: (nct6775) Add support for NCT6102D/6106D")
Signed-off-by: Bjoern Gerhart <gerhart@posteo.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-21 19:18:45 -07:00
Lei YU
211186cae1 hwmon: (occ) Fix division by zero issue
The code in occ_get_powr_avg() invokes div64_u64() without checking the
divisor. In case the divisor is zero, kernel gets an "Division by zero
in kernel" error.

Check the divisor and make it return 0 if the divisor is 0.

Fixes: c10e753d43 ("hwmon (occ): Add sensor types and versions")
Signed-off-by: Lei YU <mine260309@gmail.com>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/1562813088-23708-1-git-send-email-mine260309@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-21 19:18:45 -07:00
Linus Torvalds
8362fd64f0 ARM: SoC-related driver updates
Various driver updates for platforms and a couple of the small driver
 subsystems we merge through our tree:
 
  - A driver for SCU (system control) on NXP i.MX8QXP
  - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)
  - Qualcomm PM support for MSM8998
  - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)
  - Reset controller support for Bitmain BM1880
  - TI SCI (System Control Interface) support for CPU control on AM654
    processors
  - More TI sysc refactoring and rework
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

   - A driver for SCU (system control) on NXP i.MX8QXP

   - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)

   - Qualcomm PM support for MSM8998

   - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)

   - Reset controller support for Bitmain BM1880

   - TI SCI (System Control Interface) support for CPU control on AM654
     processors

   - More TI sysc refactoring and rework"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (84 commits)
  reset: remove redundant null check on pointer dev
  soc: rockchip: work around clang warning
  dt-bindings: reset: imx7: Fix the spelling of 'indices'
  soc: imx: Add i.MX8MN SoC driver support
  soc: aspeed: lpc-ctrl: Fix probe error handling
  soc: qcom: geni: Add support for ACPI
  firmware: ti_sci: Fix gcc unused-but-set-variable warning
  firmware: ti_sci: Use the correct style for SPDX License Identifier
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  firmware/psci: psci_checker: Park kthreads before stopping them
  memory: move jedec_ddr.h from include/memory to drivers/memory/
  memory: move jedec_ddr_data.c from lib/ to drivers/memory/
  MAINTAINERS: Remove myself as qcom maintainer
  soc: aspeed: lpc-ctrl: make parameter optional
  soc: qcom: apr: Don't use reg for domain id
  soc: qcom: fix QCOM_AOSS_QMP dependency and build errors
  memory: tegra: Fix -Wunused-const-variable
  firmware: tegra: Early resume BPMP
  soc/tegra: Select pinctrl for Tegra194
  ...
2019-07-19 17:13:56 -07:00
Linus Torvalds
97ff4ca46d Char / Misc driver patches for 5.3-rc1
Here is the "large" pull request for char and misc and other assorted
 smaller driver subsystems for 5.3-rc1.
 
 It seems that this tree is becoming the funnel point of lots of smaller
 driver subsystems, which is fine for me, but that's why it is getting
 larger over time and does not just contain stuff under drivers/char/ and
 drivers/misc.
 
 Lots of small updates all over the place here from different driver
 subsystems:
   - habana driver updates
   - coresight driver updates
   - documentation file movements and updates
   - Android binder fixes and updates
   - extcon driver updates
   - google firmware driver updates
   - fsi driver updates
   - smaller misc and char driver updates
   - soundwire driver updates
   - nvmem driver updates
   - w1 driver fixes
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the "large" pull request for char and misc and other assorted
  smaller driver subsystems for 5.3-rc1.

  It seems that this tree is becoming the funnel point of lots of
  smaller driver subsystems, which is fine for me, but that's why it is
  getting larger over time and does not just contain stuff under
  drivers/char/ and drivers/misc.

  Lots of small updates all over the place here from different driver
  subsystems:
   - habana driver updates
   - coresight driver updates
   - documentation file movements and updates
   - Android binder fixes and updates
   - extcon driver updates
   - google firmware driver updates
   - fsi driver updates
   - smaller misc and char driver updates
   - soundwire driver updates
   - nvmem driver updates
   - w1 driver fixes

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (188 commits)
  coresight: Do not default to CPU0 for missing CPU phandle
  dt-bindings: coresight: Change CPU phandle to required property
  ocxl: Allow contexts to be attached with a NULL mm
  fsi: sbefifo: Don't fail operations when in SBE IPL state
  coresight: tmc: Smatch: Fix potential NULL pointer dereference
  coresight: etm3x: Smatch: Fix potential NULL pointer dereference
  coresight: Potential uninitialized variable in probe()
  coresight: etb10: Do not call smp_processor_id from preemptible
  coresight: tmc-etf: Do not call smp_processor_id from preemptible
  coresight: tmc-etr: alloc_perf_buf: Do not call smp_processor_id from preemptible
  coresight: tmc-etr: Do not call smp_processor_id() from preemptible
  docs: misc-devices: convert files without extension to ReST
  fpga: dfl: fme: align PR buffer size per PR datawidth
  fpga: dfl: fme: remove copy_to_user() in ioctl for PR
  fpga: dfl-fme-mgr: fix FME_PR_INTFC_ID register address.
  intel_th: msu: Start read iterator from a non-empty window
  intel_th: msu: Split sgt array and pointer in multiwindow mode
  intel_th: msu: Support multipage blocks
  intel_th: pci: Add Ice Lake NNPI support
  intel_th: msu: Fix single mode with disabled IOMMU
  ...
2019-07-11 15:34:05 -07:00
Linus Torvalds
64b08df460 hwmon updates for v5.3
New drivers for Infineon PXE1610 and IRPS5401
 Minor improvements, cleanup, and fixes in several drivers
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Merge tag 'hwmon-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:

 - New drivers for Infineon PXE1610 and IRPS5401

 - Minor improvements, cleanup, and fixes in several drivers

* tag 'hwmon-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (33 commits)
  hwmon: (ina3221) Add of_node_put() before return
  hwmon: (gpio-fan) fix sysfs notifications and udev events for gpio-fan alarms
  hwmon: (gpio-fan) move fan_alarm_init after devm_hwmon_device_register_with_groups
  hwmon: (lm90) Introduce function to update configuration register
  hwmon: (lm90) Cache configuration register value
  hwmon: (lm90) Fix max6658 sporadic wrong temperature reading
  hwmon: (nct7904) Changes comments in probe function.
  hwmon: (nct7904) Add error handling in probe function.
  hwmon: Convert remaining drivers to use SPDX identifier
  hwmon: (max6650) Fix unused variable warning
  hwmon: (pmbus/adm1275) Fix power sampling support
  hwmon: (lm90) simplify getting the adapter of a client
  hwmon: (asus_atk0110) no need to check return value of debugfs_create functions
  hwmon: (max6650) Fix minor formatting issues
  hwmon: (max6650) Improve error handling in max6650_update_device
  hwmon: (max6650) Read non-volatile registers only once
  hwmon: (max6650) Convert to use devm_hwmon_device_register_with_info
  hwmon: (max6650) Simplify alarm handling
  hwmon: (max6650) Cache alarm_en register
  hwmon: (max6650) Declare valid as boolean
  ...
2019-07-11 14:44:13 -07:00
Linus Torvalds
222a21d295 Merge branch 'x86-topology-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 topology updates from Ingo Molnar:
 "Implement multi-die topology support on Intel CPUs and expose the die
  topology to user-space tooling, by Len Brown, Kan Liang and Zhang Rui.

  These changes should have no effect on the kernel's existing
  understanding of topologies, i.e. there should be no behavioral impact
  on cache, NUMA, scheduler, perf and other topologies and overall
  system performance"

* 'x86-topology-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/rapl: Cosmetic rename internal variables in response to multi-die/pkg support
  perf/x86/intel/uncore: Cosmetic renames in response to multi-die/pkg support
  hwmon/coretemp: Cosmetic: Rename internal variables to zones from packages
  thermal/x86_pkg_temp_thermal: Cosmetic: Rename internal variables to zones from packages
  perf/x86/intel/cstate: Support multi-die/package
  perf/x86/intel/rapl: Support multi-die/package
  perf/x86/intel/uncore: Support multi-die/package
  topology: Create core_cpus and die_cpus sysfs attributes
  topology: Create package_cpus sysfs attribute
  hwmon/coretemp: Support multi-die/package
  powercap/intel_rapl: Update RAPL domain name and debug messages
  thermal/x86_pkg_temp_thermal: Support multi-die/package
  powercap/intel_rapl: Support multi-die/package
  powercap/intel_rapl: Simplify rapl_find_package()
  x86/topology: Define topology_logical_die_id()
  x86/topology: Define topology_die_id()
  cpu/topology: Export die_id
  x86/topology: Create topology_max_die_per_package()
  x86/topology: Add CPUID.1F multi-die/package support
2019-07-08 18:28:44 -07:00
Nishka Dasgupta
9f7546570b hwmon: (ina3221) Add of_node_put() before return
Each iteration of for_each_child_of_node puts the previous
node, but in the case of a return from the middle of the loop, there is
no put, thus causing a memory leak. Hence add an of_node_put before the
return.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190706132130.3129-1-nishkadg.linux@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:32 -07:00
Christian Schneider
277c628fa5 hwmon: (gpio-fan) fix sysfs notifications and udev events for gpio-fan alarms
sysfs_notify() and kobject_uevent() are passed the wrong device.
fan_data->hwmon_dev needs to be passed, so that sysfs notification
goes to right place and generated uevent has the right information

Signed-off-by: Christian Schneider <cschneider@radiodata.biz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:32 -07:00
Christian Schneider
f2173fa224 hwmon: (gpio-fan) move fan_alarm_init after devm_hwmon_device_register_with_groups
This makes it possible to use the hwmon_dev in fan_alarm_notify(). Otherwise
it would be possible, that a interupt arrives and fan_alarm_notify() is
executed, before hwmon_dev is initialized.

Signed-off-by: Christian Schneider <cschneider@radiodata.biz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:31 -07:00
Guenter Roeck
7a1d220ccb hwmon: (lm90) Introduce function to update configuration register
The code to update the configuration register is repeated several times.
Move it into a separate function. At the same time, un-inline
lm90_select_remote_channel() and leave it up to the compiler to decide
what to do with it. Also remove the 'client' argument from
lm90_select_remote_channel() and from lm90_write_convrate() and take
it from struct lm90_data instead where needed.

This patch reduces code size by more than 800 bytes on x86_64.

Cc: Boyang Yu <byu@arista.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:31 -07:00
Guenter Roeck
b849e5d18c hwmon: (lm90) Cache configuration register value
The configuration register does not change on its own. Yet, it is read
in various locations, modified, and written back. Simplify and optimize
the code by caching its value and by only writing it back when needed.

Cc: Boyang Yu <byu@arista.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:30 -07:00
Boyang Yu
62456189f3 hwmon: (lm90) Fix max6658 sporadic wrong temperature reading
max6658 may report unrealistically high temperature during
the driver initialization, for which, its overtemp alarm pin
also gets asserted. For certain devices implementing overtemp
protection based on that pin, it may further trigger a reset to
the device. By reproducing the problem, the wrong reading is
found to be coincident with changing the conversion rate.

To mitigate this issue, set the stop bit before changing the
conversion rate and unset it thereafter. After such change, the
wrong reading is not reproduced. Apply this change only to the
max6657 kind for now, controlled by flag LM90_PAUSE_ON_CONFIG.

Signed-off-by: Boyang Yu <byu@arista.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:30 -07:00
amy.shih
a653acf00d hwmon: (nct7904) Changes comments in probe function.
Linux style for comments is the C89 "/* ... */" style,
changes the comments to Linux style.

Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:29 -07:00
amy.shih
b3e2606787 hwmon: (nct7904) Add error handling in probe function.
When register read and write operations return errors, needs to add
error handling.

Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-07-08 18:11:29 -07:00
Greg Kroah-Hartman
b9b667a0c7 FSI changes for 5.3
- Add MAINTAINERS entry. There is now a git tree and a mailing
  list/patchwork for collecting FSI patches
 
  - Bug fix for error driver registration error paths
 
  - Correction for the OCC hwmon driver to meet the spec
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Merge tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi into char-misc-next

Joel writes:

FSI changes for 5.3

 - Add MAINTAINERS entry. There is now a git tree and a mailing
 list/patchwork for collecting FSI patches

 - Bug fix for error driver registration error paths

 - Correction for the OCC hwmon driver to meet the spec

* tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi:
  fsi/core: Fix error paths on CFAM init
  OCC: FSI and hwmon: Add sequence numbering
  MAINTAINERS: Add FSI subsystem
2019-07-03 09:21:25 +02:00
Eddie James
afd26118f0 OCC: FSI and hwmon: Add sequence numbering
Sequence numbering of the commands submitted to the OCC is required by
the OCC interface specification. Add sequence numbering and check for
the correct sequence number on the response.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
2019-07-03 10:41:22 +09:30
Guenter Roeck
23297edbc1 hwmon: Convert remaining drivers to use SPDX identifier
This gets rid of the unnecessary license boilerplate, and avoids
having to deal with individual patches one by one.

No functional changes intended.

Reviewed-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:34:11 -07:00
Arnd Bergmann
3253854dc1 hwmon: (max6650) Fix unused variable warning
The newly added variable is only used in an #if block:

drivers/hwmon/max6650.c: In function 'max6650_probe':
drivers/hwmon/max6650.c:766:33: error: unused variable 'cooling_dev' [-Werror=unused-variable]

Change the #if to if() so the compiler can see what is actually
going on.

Fixes: a8463754a5a9 ("hwmon: (max6650) Use devm function to register thermal device")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
7d45deb31b hwmon: (pmbus/adm1275) Fix power sampling support
Not every chip supported by this driver supports setting the number
of samples for power averaging. Also, the power monitoring register
is not always a 16-bit register, and the configuration bits used for
voltage sampling are different depending on the register width.
Some conditional code is needed to fix the problem.

On top of all that, the compiler complains about problems with
FIELD_GET and FIELD_PREP macros if the file is built with W=1.
Avoid using those macros to silence the warning.

Cc: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Cc: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Reviewed-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Wolfram Sang
e67776cc30 hwmon: (lm90) simplify getting the adapter of a client
We have a dedicated pointer for that, so use it. Much easier to read and
less computation involved.

Reported-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Greg Kroah-Hartman
08d09d8099 hwmon: (asus_atk0110) no need to check return value of debugfs_create functions
When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Luca Tettamanti <kronos.it@gmail.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
228b9e196a hwmon: (max6650) Fix minor formatting issues
CHECK: struct mutex definition without comment
CHECK: Alignment should match open parenthesis

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
0c4a71d365 hwmon: (max6650) Improve error handling in max6650_update_device
Pass errors from i2c_smbus_read_byte_data() back to the caller of
max6650_update_device().

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
62dbe50591 hwmon: (max6650) Read non-volatile registers only once
Only tachometer and alarm status registers are modified by the chip.
All other registers only need to be read only once, and reading them
repeatedly does not add any value.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
e193acb3d6 hwmon: (max6650) Convert to use devm_hwmon_device_register_with_info
Convert driver to use devm_hwmon_device_register_with_info to simplify
the code and to reduce its size.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
0d5cc9383e hwmon: (max6650) Simplify alarm handling
Instead of re-reading the alarm register after reporting an alarm,
mark cached values as invalid. While this results in always reading all
data on subsequent reads, it is quite unlikely that such reads will
actually happen before the cache times out. The upside is avoiding
unnecessary unconditional i2c read operations.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
f5b20b11bb hwmon: (max6650) Cache alarm_en register
The alarm_en register is read each time the is_visible function is called.
Since it is a configuration register, this is completely unnecessary.
Read it once and cache its value.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
bf8c9edaa5 hwmon: (max6650) Declare valid as boolean
Declare valid as boolean to match its use case.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
b9d8de4a17 hwmon: (max6650) Improve error handling in max6650_init_client
Do not overwrite errors reported from i2c functions, and don't ignore
any errors.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
b2905bb8e1 hwmon: (max6650) Introduce pwm_to_dac and dac_to_pwm
Consolidate conversion from pwm value to dac value and from dac value
to pwm value into helper functions.

While doing this, only update the cached dac value if writing it
to the chip was successful after an update. Also, put macro argument
of DIV_FROM_REG() into (), and simplify return statement of
max6650_set_cur_state().

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
8e5e7ddd38 hwmon: (max6650) Use devm function to register thermal device
Use devm_thermal_of_cooling_device_register to register the thermal
cooling device. This lets us drop the remove function.

At the same time, use 'dev' variable in probe function consistently.

Cc: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
792eac1843 hwmon: (core) Add comment describing how hwdev is freed in error path
The hwmon core registers the hwmon device before adding sensors to the
thermal core. If that fails, the hwmon device is released and an error
is returned to the caller. From the code flow, it appears to be necessary
to free struct hwmon_device *, allocated with kzalloc(), in that
situation. This is incorrect, since the data structure will be freed
automatically in hwmon_dev_release() when device_unregister() is called.
This used to result in a double free, which was found and fixed with
commit 74e3512731 ("hwmon: (core) Fix double-free in
__hwmon_device_register()"). This is, however, not obvious; any reader
may erroneously conclude that the data structure is not freed.

Add comment explaining why kfree() is not necessary in this situation.

Reported-by: Eduardo Valentin <eduval@amazon.com>
Cc: Eduardo Valentin <eduval@amazon.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Masahiro Yamada
5fe625c136 hwmon: (smsc47m1) fix (suspicious) outside array bounds warnings
Kbuild test robot reports outside array bounds warnings.

This is reproducible for ARCH=sh allmodconfig with the kernel.org
toolchains available at:

https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_64-gcc-8.1.0-nolibc-sh4-linux.tar.xz

  CC [M]  drivers/hwmon/smsc47m1.o
drivers/hwmon/smsc47m1.c: In function 'fan_div_store':
drivers/hwmon/smsc47m1.c:370:49: warning: array subscript [0, 2] is outside array bounds of 'u8[3]' {aka 'unsigned char[3]'} [-Warray-bounds]
  tmp = 192 - (old_div * (192 - data->fan_preload[nr])
                                ~~~~~~~~~~~~~~~~~^~~~
drivers/hwmon/smsc47m1.c:372:19: warning: array subscript [0, 2] is outside array bounds of 'u8[3]' {aka 'unsigned char[3]'} [-Warray-bounds]
  data->fan_preload[nr] = clamp_val(tmp, 0, 191);
  ~~~~~~~~~~~~~~~~~^~~~
drivers/hwmon/smsc47m1.c:373:53: warning: array subscript [0, 2] is outside array bounds of 'const u8[3]' {aka 'const unsigned char[3]'} [-Warray-bounds]
  smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr],
                             ~~~~~~~~~~~~~~~~~~~~~~~~^~~~

Looking at the code, I believe these are false positives.

While it is ridiculous to patch our driver to make the insane
compiler happy, clarifying the unreachable path will be helpful
not only for compilers but also for humans.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[groeck: Use BUG() instead of unreachable() to make objtool happy]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Robert Hancock
9158411b96 hwmon: (pmbus) Add Infineon IRPS5401 driver
Add a driver to support the Infineon IRPS5401 PMIC. This chip has 5
pages corresponding to 4 switching outputs and one linear (LDO) output.
The switching and LDO outputs have slightly different supported
parameters.

Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
amy.shih
b67b735613 hwmon: (nct7904) Fix the incorrect value of tcpu_mask in nct7904_data struct.
Detect the multi-function of voltage, thermal diode and thermistor
from register VT_ADC_MD_REG to set value of tcpu_mask in nct7904_data
struct, set temp[1-5]_input the input values TEMP_CH1~4 and LTD of
temperature. Set temp[6~13]_input the input values of DTS temperature
that correspond to sensors TCPU1~8.

Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Vijay Khemka
344757bac5 hwmon: (pmbus) Add Infineon PXE1610 VR driver
Added pmbus driver for the new device Infineon pxe1610
voltage regulator. It also supports similar family device
PXE1110 and PXM1310.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Alexander Soldatov
8083034251 hwmon: (occ) Add temp sensor value check
The occ driver supports two formats for the temp sensor value.

The OCC firmware for P8 supports only the first format, for which
no range checking or error processing is performed in the driver.
Inspecting the OCC sources for P8 reveals that OCC may send
a special value 0xFFFF to indicate that a sensor read timeout
has occurred, see

https://github.com/open-power/occ/blob/master_p8/src/occ/cmdh/cmdh_fsp_cmds.c#L395

That situation wasn't handled in the driver. This patch adds invalid
temp value check for the sensor data format 1 and handles it the same
way as it is done for the format 2, where EREMOTEIO is reported for
this case.

Signed-off-by: Alexander Soldatov <a.soldatov@yadro.com>
Signed-off-by: Alexander Amelkin <a.amelkin@yadro.com>
Reviewed-by: Alexander Amelkin <a.amelkin@yadro.com>
Cc: Edward A. James <eajames@us.ibm.com>
Cc: Joel Stanley <joel@jms.id.au>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Adamski, Krzysztof (Nokia - PL/Wroclaw)
c83529c17e hwmon: (pmbus/adm1275) support PMBUS_VIRT_*_SAMPLES
The device supports setting the number of samples for averaging the
measurements. There are two separate settings - PWR_AVG for averaging
PIN and VI_AVG for averaging VIN/VAUX/IOUT, both being part of
PMON_CONFIG register. The values are stored as exponent of base 2 of the
actual number of samples that will be taken.

Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[groeck: Dropped unused variables]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:33:01 -07:00
Guenter Roeck
5696e4aaab hwmon: (pwm-fan) Check return value from devm_add_action_or_reset
devm_add_action_or_reset() can fail due to a memory allocation failure.
Check for it and return the error if that happens.

Fixes: 37bcec5d9f ("hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:32:34 -07:00
Guenter Roeck
b9bb92e1d1 hwmon: (gpio-fan) Check return value from devm_add_action_or_reset
devm_add_action_or_reset() can fail due to a memory allocation failure.
Check for it and return the error if that happens.

Fixes: 9534784550 ("hwmon: (gpio-fan) Use devm_thermal_of_cooling_device_register")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-23 18:32:34 -07:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Olof Johansson
df767c0a43 ARM SCMI updates/fixes for v5.3
1. Correction to ARM document ID referred in SCMI protocol binding
 2. Fix to correct bitfield definitions for SENSOR_DESC attributes which
    otherwise will calculate sensor values on wrong scale
 3. Adds the missing rate_discrete flag setting so that discrete clocks
    are handled correctly. Without this fix it assumes continuous range
    which is incorrect
 4. Adds support to read and scale the sensor values based on the factor
    read from the firmware
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Merge tag 'scmi-updates-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers

ARM SCMI updates/fixes for v5.3

1. Correction to ARM document ID referred in SCMI protocol binding
2. Fix to correct bitfield definitions for SENSOR_DESC attributes which
   otherwise will calculate sensor values on wrong scale
3. Adds the missing rate_discrete flag setting so that discrete clocks
   are handled correctly. Without this fix it assumes continuous range
   which is incorrect
4. Adds support to read and scale the sensor values based on the factor
   read from the firmware

* tag 'scmi-updates-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  hwmon: scmi: Scale values to target desired HWMON units
  firmware: arm_scmi: fetch and store sensor scale
  firmware: arm_scmi: update rate_discrete in clock_describe_rates_get
  firmware: arm_scmi: fix bitfield definitions for SENSOR_DESC attributes
  dt-bindings: arm: fix the document ID for SCMI protocol documentation

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-06-17 04:54:11 -07:00
Florian Fainelli
ac778e6263 hwmon: scmi: Scale values to target desired HWMON units
If the SCMI firmware implementation is reporting values in a scale that
is different from the HWMON units, we need to scale up or down the value
according to how far apart they are.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
[sudeep.holla: added check of scale = 0 for early exit in scmi_hwmon_scale]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-06-12 12:29:51 +01:00
Linus Torvalds
9331b6740f SPDX update for 5.2-rc4
Another round of SPDX header file fixes for 5.2-rc4
 
 These are all more "GPL-2.0-or-later" or "GPL-2.0-only" tags being
 added, based on the text in the files.  We are slowly chipping away at
 the 700+ different ways people tried to write the license text.  All of
 these were reviewed on the spdx mailing list by a number of different
 people.
 
 We now have over 60% of the kernel files covered with SPDX tags:
 	$ ./scripts/spdxcheck.py -v 2>&1 | grep Files
 	Files checked:            64533
 	Files with SPDX:          40392
 	Files with errors:            0
 
 I think the majority of the "easy" fixups are now done, it's now the
 start of the longer-tail of crazy variants to wade through.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 =qU++
 -----END PGP SIGNATURE-----

Merge tag 'spdx-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull yet more SPDX updates from Greg KH:
 "Another round of SPDX header file fixes for 5.2-rc4

  These are all more "GPL-2.0-or-later" or "GPL-2.0-only" tags being
  added, based on the text in the files. We are slowly chipping away at
  the 700+ different ways people tried to write the license text. All of
  these were reviewed on the spdx mailing list by a number of different
  people.

  We now have over 60% of the kernel files covered with SPDX tags:
	$ ./scripts/spdxcheck.py -v 2>&1 | grep Files
	Files checked:            64533
	Files with SPDX:          40392
	Files with errors:            0

  I think the majority of the "easy" fixups are now done, it's now the
  start of the longer-tail of crazy variants to wade through"

* tag 'spdx-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (159 commits)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 450
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 449
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 448
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 446
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 444
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 443
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 442
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 440
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 436
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 435
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 434
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 433
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 432
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 431
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 430
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 429
  ...
2019-06-08 12:52:42 -07:00
Robert Hancock
4a60570dce hwmon: (pmbus/core) Treat parameters as paged if on multiple pages
Some chips have attributes which exist on more than one page but the
attribute is not presently marked as paged. This causes the attributes
to be generated with the same label, which makes it impossible for
userspace to tell them apart.

Marking all such attributes as paged would result in the page suffix
being added regardless of whether they were present on more than one
page or not, which might break existing setups. Therefore, we add a
second check which treats the attribute as paged, even if not marked as
such, if it is present on multiple pages.

Fixes: b4ce237b7f ("hwmon: (pmbus) Introduce infrastructure to detect sensors and limit registers")
Signed-off-by: Robert Hancock <hancock@sedsystems.ca>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-05 18:36:27 -07:00
Adamski, Krzysztof (Nokia - PL/Wroclaw)
38463721ec hwmon: (pmbus/core) mutex_lock write in pmbus_set_samples
update_lock is a mutex intended to protect write operations. It was not
taken, however, when _pmbus_write_word_data is called from
pmbus_set_samples() function which may cause problems especially when
some PMBUS_VIRT_* operation is implemented as a read-modify-write cycle.

This patch makes sure the lock is held during the operation.

Fixes: 49c4455dcc ("hwmon: (pmbus) Introduce PMBUS_VIRT_*_SAMPLES registers")
Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[groeck: Declared and initialized missing 'data' variable]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-05 18:36:27 -07:00
Eduardo Valentin
c41dd48e21 hwmon: (core) add thermal sensors only if dev->of_node is present
Drivers may register to hwmon and request for also registering
with the thermal subsystem (HWMON_C_REGISTER_TZ). However,
some of these driver, e.g. marvell phy, may be probed from
Device Tree or being dynamically allocated, and in the later
case, it will not have a dev->of_node entry.

Registering with hwmon without the dev->of_node may result in
different outcomes depending on the device tree, which may
be a bit misleading. If the device tree blob has no 'thermal-zones'
node, the *hwmon_device_register*() family functions are going
to gracefully succeed, because of-thermal,
*thermal_zone_of_sensor_register() return -ENODEV in this case,
and the hwmon error path handles this error code as success to
cover for the case where CONFIG_THERMAL_OF is not set.
However, if the device tree blob has the 'thermal-zones'
entry, the *hwmon_device_register*() will always fail on callers
with no dev->of_node, propagating -EINVAL.

If dev->of_node is not present, calling of-thermal does not
make sense. For this reason, this patch checks first if the
device has a of_node before going over the process of registering
with the thermal subsystem of-thermal interface. And in this case,
when a caller of *hwmon_device_register*() with HWMON_C_REGISTER_TZ
and no dev->of_node will still register with hwmon, but not with
the thermal subsystem. If all the hwmon part bits are in place,
the registration will succeed.

Fixes: d560168b5d ("hwmon: (core) New hwmon registration API")
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduval@amazon.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-06-05 18:36:27 -07:00
Thomas Gleixner
b886d83c5b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation version 2 of the license

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 315 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:17 +02:00
Thomas Gleixner
55716d2643 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
Based on 1 normalized pattern(s):

  this file is released under the gplv2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 68 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190114.292346262@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:16 +02:00
Thomas Gleixner
0ebc04719c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 408
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license v2 as published
  by the free software foundation this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190112.493982682@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:14 +02:00