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path: root/drivers/watchdog/atlas7_wdt.c
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Diffstat (limited to 'drivers/watchdog/atlas7_wdt.c')
-rw-r--r--drivers/watchdog/atlas7_wdt.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/watchdog/atlas7_wdt.c b/drivers/watchdog/atlas7_wdt.c
index df6d9242a..ed80734be 100644
--- a/drivers/watchdog/atlas7_wdt.c
+++ b/drivers/watchdog/atlas7_wdt.c
@@ -154,6 +154,11 @@ static int atlas7_wdt_probe(struct platform_device *pdev)
writel(0, wdt->base + ATLAS7_WDT_CNT_CTRL);
wdt->tick_rate = clk_get_rate(clk);
+ if (!wdt->tick_rate) {
+ ret = -EINVAL;
+ goto err1;
+ }
+
wdt->clk = clk;
atlas7_wdd.min_timeout = 1;
atlas7_wdd.max_timeout = UINT_MAX / wdt->tick_rate;