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watchdog: kempld-wdt: Use the correct value when configuring the prescaler with the watchdog 

Use the prescaler index, rather than its value, to configure the watchdog.
This will prevent a mismatch with the prescaler used to calculate the cycles.

Signed-off-by: Per Gundberg <per.gundberg@icomera.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Michael Brunner <michael.brunner@kontron.com>
Tested-by: Michael Brunner <michael.brunner@kontron.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@vger.kernel.org>
This commit is contained in:
gundberg 2014-04-24 15:49:19 +02:00 committed by Wim Van Sebroeck
parent 51ee34ab58
commit a9e0436b30
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/kempld_wdt.c
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@ -162,7 +162,7 @@ static int kempld_wdt_set_stage_timeout(struct kempld_wdt_data *wdt_data,
kempld_get_mutex(pld);
stage_cfg = kempld_read8(pld, KEMPLD_WDT_STAGE_CFG(stage->id));
stage_cfg &= ~STAGE_CFG_PRESCALER_MASK;
stage_cfg |= STAGE_CFG_SET_PRESCALER(prescaler);
stage_cfg |= STAGE_CFG_SET_PRESCALER(PRESCALER_21);
kempld_write8(pld, KEMPLD_WDT_STAGE_CFG(stage->id), stage_cfg);
kempld_write32(pld, KEMPLD_WDT_STAGE_TIMEOUT(stage->id),
stage_timeout);