watchdog: at91sam9_wdt: fix secs_to_ticks
Fix the secs_to_ticks macro in case 0 is passed as an argument. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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