watchdog: renesas_wdt: don't set divider while watchdog is running

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[ Upstream commit e990e12741 ]

The datasheet says we must stop the timer before changing the clock
divider. This can happen when the restart handler is called while the
watchdog is running.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Wolfram Sang 2018-11-07 20:46:02 +01:00 • committed by Greg Kroah-Hartman

parent a0cb037f27

commit ff5a441411

1 changed files with 7 additions and 2 deletions

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drivers/watchdog/renesas_wdt.c

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