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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);