linux-toradex.git/drivers/watchdog, branch v4.5-rc3

watchdog: Fix dependencies for !HAS_IOMEM archs

2016-01-31T15:54:36+00:00

Not every arch has io memory.
So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: imgdpc: select WATCHDOG_CORE

2016-01-31T15:52:56+00:00

The imgpdc_wdt driver can be built on all architectures with
CONFIG_COMPILE_TEST, but fails if no other watchdog driver is
enabled:

drivers/watchdog/built-in.o: In function `pdc_wdt_remove':
imgpdc_wdt.c:(.text+0x74): undefined reference to `watchdog_unregister_device'

This adds the normal 'select WATCHDOG_CORE' that is needed to
ensure the driver always builds cleanly.

Signed-off-by: Arnd Bergmann 
Reviewed-by: James Hogan 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: tango: rename ARCH_TANGOX to ARCH_TANGO

2016-01-31T15:52:29+00:00

This change was requested by arm-soc maintainer Kevin Hilman
because the X in TANGOX is a wildcard.

Signed-off-by: Marc Gonzalez 
Acked-by: Mans Rullgard 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: pcwd_usb: fix compilation warning

2016-01-31T15:52:15+00:00

In function ‘usb_pcwd_probe’:
drivers/watchdog/pcwd_usb.c:611:12: warning: variable ‘maxp’ set but not
used [-Wunused-but-set-variable]
  int pipe, maxp;

Signed-off-by: Tomas Winkler 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: sp805: ping fails to abort wdt reset

2016-01-31T15:52:08+00:00

sp805 wdt asserts interrupt for the first expiry and
reloads the counter. If wdt interrupt is set and count
reaches zero then wdt reset event is generated. To get
wdt reset at 't' timeout the driver loads wdt counter
with 't/2'. A ping before time 't'  *should* prevent
wdt reset. Currently if ping is done after 't/2' then
wdt interrupt condition gets set. On the next countdown
of loadval wdt reset event occurs eventhough wdt was
reloaded before the set timeout 't'.

This patch clears the interrupt condition on ping.

Signed-off-by: Sandeep Tripathy 
Acked-by: Viresh Kumar 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: max63xx: make module's license marker match the header

2016-01-31T15:51:56+00:00

The header specifies GPL version 2 only, so make the MODULE_LICENSE
string use the respective string for that.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: asm9260: remove init and exit annotations

2016-01-11T21:48:05+00:00

The probe and release functions in this driver are marked
as __init and __exit, but this is wrong as indicated by this
Kbuild error message:

WARNING: vmlinux.o(.data+0x1d2308): Section mismatch in reference from the variable asm9260_wdt_driver to the function .init.text:asm9260_wdt_probe()

This removes the annotations, to make the sysfs unbind attribute
and deferred probing work.

Signed-off-by: Arnd Bergmann 
Fixes: aae03dc98177 ("watchdog: add Alphascale asm9260-wdt driver")
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Drop pointer to watchdog device from struct watchdog_device

2016-01-11T20:53:59+00:00

The lifetime of the watchdog device pointer is different from the lifetime
of its character device. Remove it entirely to avoid race conditions.

Signed-off-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: ziirave: Use watchdog infrastructure to create sysfs attributes

2016-01-11T20:53:58+00:00

The watchdog core now supports creating driver specific sysfs attributes
when creating the watchdog device.

Signed-off-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck

watchdog: Add support for creating driver specific sysfs attributes

2016-01-11T20:53:57+00:00

The Zodiac watchdog driver attaches additional sysfs attributes to the
watchdog device. This has a number of problems: The watchdog device
lifetime differs from the driver lifetime, and the device structure
should therefore not be accessed from drivers. Also, creating sysfs
attributes after driver registration results in a potential race condition
if user space expects the attributes to exist but they don't exist yet.

Add support for creating driver specific sysfs attributes to the watchdog
core to solve the problems.

Signed-off-by: Guenter Roeck 
Signed-off-by: Guenter Roeck 
Signed-off-by: Wim Van Sebroeck