[PATCH v2 1/2] watchdog: Add driver for Mediatek watchdog

Hi,

On Fri, 2014-12-12 at 15:50 +0100, Matthias Brugger wrote:

This patch adds a driver for the Mediatek SoC integrated
watchdog. This driver supports watchdog and software reset
for mt65xx and mt81xx SoCs.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

+static int mtk_reset_handler(struct notifier_block *this, unsigned long mode,
+				void *cmd)
+{
+	struct mtk_wdt_dev *mtk_wdt = container_of(this,
+						       struct mtk_wdt_dev,
+						       restart_handler);
+	void __iomem *wdt_base = mtk_wdt->wdt_base;
+	u32 reg;
+
+	/* Reset system */
+	writel(WDT_SWRST_KEY, wdt_base + WDT_SWRST);
+
+	while (1) {
+		mdelay(5);
+		writel(WDT_SWRST_KEY, wdt_base + WDT_SWRST);
+	}
+	return NOTIFY_DONE;
+
+}

Build warning
../drivers/watchdog/mtk_wdt.c:78:6: warning: unused variable
'reg' [-Wunused-variable]