lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 19 Sep 2014 14:29:58 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	<wim@...ana.be>, <linux@...ck-us.net>
CC:	<linux-watchdog@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Jisheng Zhang <jszhang@...vell.com>
Subject: [PATCH 1/2] watchdog: dw_wdt: restart the counter immediately after enabling WDT

The TOP_INIT may be zero, so the timeout period may be very short after
initialization is done, thus the system may be reset soon after enabling.
We fix this problem by restarting the counter immediately after enabling
WDT.

Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
---
 drivers/watchdog/dw_wdt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c
index 9f21029..ad0619d 100644
--- a/drivers/watchdog/dw_wdt.c
+++ b/drivers/watchdog/dw_wdt.c
@@ -146,6 +146,7 @@ static int dw_wdt_open(struct inode *inode, struct file *filp)
 		dw_wdt_set_top(DW_WDT_MAX_TOP);
 		writel(WDOG_CONTROL_REG_WDT_EN_MASK,
 		       dw_wdt.regs + WDOG_CONTROL_REG_OFFSET);
+		dw_wdt_keepalive();
 	}
 
 	dw_wdt_set_next_heartbeat();
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists