usb: chipidea: core: do not register extcon notifier if extcon device is not existed

This issue is detected when the system has another device driver
which registers USB connector extcon device, fix it by adding
extcon device check.

Signed-off-by: Peter Chen <peter.chen@nxp.com>

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index b17ed3a9a3045ff9d9c88aacca3d8b1ffc98a06e..a91736bfc5c282b06e67746e1e1f4100b14f5be8 100644 (file)
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -736,7 +736,7 @@ static int ci_extcon_register(struct ci_hdrc *ci)
 
        id = &ci->platdata->id_extcon;
        id->ci = ci;
-       if (!IS_ERR(id->edev)) {
+       if (!IS_ERR_OR_NULL(id->edev)) {
                ret = devm_extcon_register_notifier(ci->dev, id->edev,
                                                EXTCON_USB_HOST, &id->nb);
                if (ret < 0) {
@@ -747,7 +747,7 @@ static int ci_extcon_register(struct ci_hdrc *ci)
 
        vbus = &ci->platdata->vbus_extcon;
        vbus->ci = ci;
-       if (!IS_ERR(vbus->edev)) {
+       if (!IS_ERR_OR_NULL(vbus->edev)) {
                ret = devm_extcon_register_notifier(ci->dev, vbus->edev,
                                                EXTCON_USB, &vbus->nb);
                if (ret < 0) {