linux-kernel - [PATCH v2] watchdog: sunxi: fix activation of system reset

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Message-ID: <55B32BCE.5050506@gmail.com>
Date:	Sat, 25 Jul 2015 08:25:18 +0200
From:	Francesco Lavra <francescolavra.fl@...il.com>
To:	wim@...ana.be, maxime.ripard@...e-electrons.com,
	linux-watchdog@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] watchdog: sunxi: fix activation of system reset

Commit f2147de33470 ("watchdog: sunxi: support parameterized compatible
strings") introduced a regression in sunxi_wdt_start(), by which
the system reset function of the watchdog is not enabled upon
starting the watchdog. As a result, the system is not reset when the
watchdog expires. Fix it. 

Signed-off-by: Francesco Lavra <francescolavra.fl@...il.com>
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Fixes: f2147de33470 ("watchdog: sunxi: support parameterized compatible strings")
Cc: stable@...r.kernel.org
---
Changes in v2:
  - Added Reviewed-by, Fixes, and Cc tags
  - Fixed commit message
---
 drivers/watchdog/sunxi_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
index a29afb3..47bd8a1 100644
--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -184,7 +184,7 @@ static int sunxi_wdt_start(struct watchdog_device *wdt_dev)
 	/* Set system reset function */
 	reg = readl(wdt_base + regs->wdt_cfg);
 	reg &= ~(regs->wdt_reset_mask);
-	reg |= ~(regs->wdt_reset_val);
+	reg |= regs->wdt_reset_val;
 	writel(reg, wdt_base + regs->wdt_cfg);
 
 	/* Enable watchdog */
-- 
1.9.1
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