ARM: SAMSUNG: fix watchdog reset issue with clk_get()
clkdev framework uses global mutex to protect clock tree, so it is not
possible to call clk_get() in interrupt context. This patch fixes this
issue and makes system reset by watchdog call working again.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c
index 302c426..3b44519 100644
--- a/arch/arm/plat-samsung/clock.c
+++ b/arch/arm/plat-samsung/clock.c
@@ -64,6 +64,17 @@
*/
DEFINE_SPINLOCK(clocks_lock);
+/* Global watchdog clock used by arch_wtd_reset() callback */
+struct clk *s3c2410_wdtclk;
+static int __init s3c_wdt_reset_init(void)
+{
+ s3c2410_wdtclk = clk_get(NULL, "watchdog");
+ if (IS_ERR(s3c2410_wdtclk))
+ printk(KERN_WARNING "%s: warning: cannot get watchdog clock\n", __func__);
+ return 0;
+}
+arch_initcall(s3c_wdt_reset_init);
+
/* enable and disable calls for use with the clk struct */
static int clk_null_enable(struct clk *clk, int enable)