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SubjectRe: [PATCH v4 1/5] watchdog: davinci: change driver to use WDT core
On 11/27/2013 6:18 PM, Ivan Khoronzhuk wrote:
> To reduce code duplicate and increase code readability use WDT core
> code to handle WDT interface.
>
> Remove io_lock as the WDT core uses mutex to lock each wdt device.
> Remove wdt_state as the WDT core tracks state with its own variable.
>
> The watchdog_init_timeout() can read timeout value from timeout-sec
> property if the passed value is out of bounds. The heartbeat is
> initialized in next way. If heartbeat is not set thought module
> parameter, try to read it's value from WDT node timeout-sec property.
> If node has no one, use default value.
>
> The heartbeat is hold in wdd->timeout by WDT core, so use it in
> order to set timeout period.
>
> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
> ---
> drivers/watchdog/Kconfig | 2 +
> drivers/watchdog/davinci_wdt.c | 147 ++++++++++------------------------------
> 2 files changed, 37 insertions(+), 112 deletions(-)
>
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index 5be6e91..eb8c89d 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -271,6 +271,8 @@ config IOP_WATCHDOG
> config DAVINCI_WATCHDOG
> tristate "DaVinci watchdog"
> depends on ARCH_DAVINCI
> + select WATCHDOG_CORE
> + select WATCHDOG_NOWAYOUT

Its not clear for change log why NOWAYOUT needs to be forced on all the
time for all users of DaVinci watchdog.

Thanks,
Sekhar


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