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

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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>
This commit is contained in:
Peter Chen
2017-06-23 14:39:27 +08:00
parent b74c43156c
commit 7c3a8b8150
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/chipidea/core.c
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@@ -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) {