rk: reset drivers/net/wireless drivers/video/display/display-sysfs.c sound/soc/codecs...

[firefly-linux-kernel-4.4.55.git] / drivers / watchdog / wm831x_wdt.c

diff --git a/drivers/watchdog/wm831x_wdt.c b/drivers/watchdog/wm831x_wdt.c
index 8c4b2d5bb7da542a364d77ac7deb9e8c5a07f1c0..871caea4e1c62d7a868cfb24593d1de7c1f244c2 100644 (file)
--- a/drivers/watchdog/wm831x_wdt.c
+++ b/drivers/watchdog/wm831x_wdt.c
@@ -320,6 +320,11 @@ static int __devinit wm831x_wdt_probe(struct platform_device *pdev)
        struct wm831x_watchdog_pdata *pdata;
        int reg, ret;
 
+       if (wm831x) {
+               dev_err(&pdev->dev, "wm831x watchdog already registered\n");
+               return -EBUSY;
+       }
+
        wm831x = dev_get_drvdata(pdev->dev.parent);
 
        ret = wm831x_reg_read(wm831x, WM831X_WATCHDOG);