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Commit a9e0436b authored by gundberg's avatar gundberg Committed by Wim Van Sebroeck
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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: default avatarPer Gundberg <per.gundberg@icomera.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarMichael Brunner <michael.brunner@kontron.com>
Tested-by: default avatarMichael Brunner <michael.brunner@kontron.com>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@vger.kernel.org>
parent 51ee34ab

drivers/watchdog/kempld_wdt.c

+1 −1
Original line number Diff line number Diff line
@@ -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);