drivers/hwmon/ds1621.c:381:1-3: WARNING: PTR_RET can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci

CC: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

drivers/hwmon/nct6775.c:3866:1-3: WARNING: PTR_RET can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci

CC: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also use new macro ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also use new macro ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also use new macro ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also introduce dev variable in probe function to simplify access
to client->dev, and use new macro ATTRIBUTE_GROUPS to declare
attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Modify code to use is_visible to determine if an attribute should be created
or not, then use devm_hwmon_device_register_with_groups to create the hwmon
device and all attributes in one operation.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also introduce new variable dev pointing to client->dev in the probe
function, and use new macro ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also rename new_client variable to client and introduce
new variable dev pointing to client->dev in the probe function,
and use new macro ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Also use new macro __ATTRIBUTE_GROUPS to declare attribute groups.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Drivers using the new hwmon_device_register_with_groups API often have a
remove function which consists solely of a call hwmon_device_unregister().

Provide support for devm_hwmon_device_register_with_groups and
devm_hwmon_device_unregister to allow this repeated code to be removed
and help eliminate error handling code.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

hwmon_device_register_with_groups() lets callers register a hwmon device
together with all sysfs attributes in a single call.

When using hwmon_device_register_with_groups(), hwmon attributes are attached
to the hwmon device directly and no longer with its parent device.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Leftover from commit 33cd66e3 (hwmon: (f71882fg) Convert to use
devm_ functions).
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The f75375s driver crashes the kernel if it detects an an internal
implementation error. While the detected conditions suggest that
there is a bug in the code, the condition is not fatal.
Replace BUG() with WARN().

Cc: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

vid_to_reg() returns -1 if it encounters an error. Return -EINVAL instead.
Its only caller, atxp1_storevcore(), doesn't use the return code but
returns -1 instead, which is wrong anyway as it means -EPERM.
Use the return value from vid_to_reg() instead to report the error.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Reviewed-by: NJean Delvare <khali@linux-fr.org>

acpi_bus_register_driver() returns a valid error code. Use it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

acpi_power_meter crashes the kernel if it detects an unexpected event
or an internal implementation error. While the detected conditions
suggest that there is a bug in the code, the condition is not fatal.
Replace BUG() with WARN().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

get_fan_speed_index() returns -EINVAL in case of errors, only to have it
ignored and replaced with -ENODEV. Make it return -ENODEV and use it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

find_trange_value() returns -ENODEV in case of errors, only to have it
ignored and replaced with -EINVAL. Make it return -EINVAL and use it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Reviewed-by: NJean Delvare <khali@linux-fr.org>

pmbus code currently crashes the kernel if it detects an internal
implementation error. While the detected condition suggests that there
is a bug in the code, it is hardly fatal. Therefore, it should not
trigger a crash. Replace BUG() with WARN().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

smatch complains about

mc13783_adc_probe() error: snprintf() chops off the last chars of
'id->name': 20 +vs 10

Use PLATFORM_NAME_SIZE instead of '10' as size when declaring
the name variable.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

smatch complains about a potential out-of-bounds access to the
temp_offset array. That doesn't happen in practice, but it doesn't
hurt to add an explicit check either. This prevents potential problems
in the future (for example if the number of 'fixed' temperature
sensors is increased to add support for another chip).
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

smatch complains that we don't use the return value from find_temp_source().
Valid point, only find_temp_source() doesn't return a valid error code.
Have it return a valid error code and use it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Semicolons after closing } of conditional blocks are not needed
and can be removed.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Reviewed-by: NJean Delvare <khali@linux-fr.org>

Pull watchdog fixes from Wim Van Sebroeck:
 "This will fix a deadlock on the ts72xx_wdt driver, fix bitmasks in the
  kempld_wdt driver and fix a section mismatch in the sunxi_wdt driver"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: sunxi: Fix section mismatch
  watchdog: kempld_wdt: Fix bit mask definition
  watchdog: ts72xx_wdt: locking bug in ioctl

This driver has a section mismatch, for probe and remove functions,
leading to the following warning during the compilation.

WARNING: drivers/watchdog/built-in.o(.data+0x24): Section mismatch in
reference from the variable sunxi_wdt_driver to the function
.init.text:sunxi_wdt_probe()
The variable sunxi_wdt_driver references
the function __init sunxi_wdt_probe()
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

STAGE_CFG bits are defined as [5:4] bits. However, '(((x) & 0x30) << 4)'
handles [9:8] bits. Thus, it should be fixed in order to handle
[5:4] bits.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
interruptible deadlock.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Pull ARM SoC fixes from Olof Johansson:
 "A small batch of fixes this week, mostly OMAP related.  Nothing stands
  out as particularly controversial.

  Also a fix for a 3.12-rc1 timer regression for Exynos platforms,
  including the Chromebooks"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: exynos: dts: Update 5250 arch timer node with clock frequency
  ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
  ARM: mach-omap2: board-generic: fix undefined symbol
  ARM: dts: Fix pinctrl mask for omap3
  ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
  ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT

Without the "clock-frequency" property in arch timer node, could able
to see the below crash dump.

[<c0014e28>] (unwind_backtrace+0x0/0xf4) from [<c0011808>] (show_stack+0x10/0x14)
[<c0011808>] (show_stack+0x10/0x14) from [<c036ac1c>] (dump_stack+0x7c/0xb0)
[<c036ac1c>] (dump_stack+0x7c/0xb0) from [<c01ab760>] (Ldiv0_64+0x8/0x18)
[<c01ab760>] (Ldiv0_64+0x8/0x18) from [<c0062f60>] (clockevents_config.part.2+0x1c/0x74)
[<c0062f60>] (clockevents_config.part.2+0x1c/0x74) from [<c0062fd8>] (clockevents_config_and_register+0x20/0x2c)
[<c0062fd8>] (clockevents_config_and_register+0x20/0x2c) from [<c02b8e8c>] (arch_timer_setup+0xa8/0x134)
[<c02b8e8c>] (arch_timer_setup+0xa8/0x134) from [<c04b47b4>] (arch_timer_init+0x1f4/0x24c)
[<c04b47b4>] (arch_timer_init+0x1f4/0x24c) from [<c04b40d8>] (clocksource_of_init+0x34/0x58)
[<c04b40d8>] (clocksource_of_init+0x34/0x58) from [<c049ed8c>] (time_init+0x20/0x2c)
[<c049ed8c>] (time_init+0x20/0x2c) from [<c049b95c>] (start_kernel+0x1e0/0x39c)

THis is because the Exynos u-boot, for example on the Chromebooks, doesn't set
up the CNTFRQ register as expected by arch_timer. Instead, we have to specify
the frequency in the device tree like this.
Signed-off-by: NYuvaraj Kumar C D <yuvaraj.cd@samsung.com>
[olof: Changed subject, added comment, elaborated on commit message]
Signed-off-by: NOlof Johansson <olof@lixom.net>