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watchdog: at91sam9_wdt: fix secs_to_ticks

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Fix the secs_to_ticks macro in case 0 is passed as an argument.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Boris BREZILLON 2013-11-03 18:52:42 +01:00 committed by Wim Van Sebroeck
parent 705b675db9
commit 1444797fc1
1 changed files with 1 additions and 1 deletions
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drivers/watchdog/at91sam9_wdt.c
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@ -51,7 +51,7 @@
#define ticks_to_hz_rounddown(t) ((((t) + 1) * HZ) >> 8)
#define ticks_to_hz_roundup(t) (((((t) + 1) * HZ) + 255) >> 8)
#define ticks_to_secs(t) (((t) + 1) >> 8)
#define secs_to_ticks(s) (((s) << 8) - 1)
#define secs_to_ticks(s) ((s) ? (((s) << 8) - 1) : 0)
#define WDT_MR_RESET 0x3FFF2FFF