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usb: mtu3: check return value of devm_extcon_register_notifier() 

Check the return value of devm_extcon_register_notifier() and
add error handling.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2019-03-21 10:53:39 +08:00 committed by Greg Kroah-Hartman
parent bb31b35251
commit 03d8bfc130
2 changed files with 16 additions and 5 deletions
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13
drivers/usb/mtu3/mtu3_dr.c
View File

@ -238,14 +238,18 @@ static int ssusb_extcon_register(struct otg_switch_mtk *otg_sx)
otg_sx->vbus_nb.notifier_call = ssusb_vbus_notifier;
ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB,
&otg_sx->vbus_nb);
if (ret < 0)
if (ret < 0) {
dev_err(ssusb->dev, "failed to register notifier for USB\n");
return ret;
}
otg_sx->id_nb.notifier_call = ssusb_id_notifier;
ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB_HOST,
&otg_sx->id_nb);
if (ret < 0)
if (ret < 0) {
dev_err(ssusb->dev, "failed to register notifier for USB-HOST\n");
return ret;
}
dev_dbg(ssusb->dev, "EXTCON_USB: %d, EXTCON_USB_HOST: %d\n",
extcon_get_state(edev, EXTCON_USB),
@ -415,6 +419,7 @@ void ssusb_set_force_mode(struct ssusb_mtk *ssusb,
int ssusb_otg_switch_init(struct ssusb_mtk *ssusb)
{
struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
int ret = 0;
INIT_WORK(&otg_sx->id_work, ssusb_id_work);
INIT_WORK(&otg_sx->vbus_work, ssusb_vbus_work);
@ -422,9 +427,9 @@ int ssusb_otg_switch_init(struct ssusb_mtk *ssusb)
if (otg_sx->manual_drd_enabled)
ssusb_debugfs_init(ssusb);
else
ssusb_extcon_register(otg_sx);
ret = ssusb_extcon_register(otg_sx);
return 0;
return ret;
}
void ssusb_otg_switch_exit(struct ssusb_mtk *ssusb)

8
drivers/usb/mtu3/mtu3_plat.c
View File

@ -401,7 +401,11 @@ static int mtu3_probe(struct platform_device *pdev)
goto gadget_exit;
}
ssusb_otg_switch_init(ssusb);
ret = ssusb_otg_switch_init(ssusb);
if (ret) {
dev_err(dev, "failed to initialize switch\n");
goto host_exit;
}
break;
default:
dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode);
@ -411,6 +415,8 @@ static int mtu3_probe(struct platform_device *pdev)
return 0;
host_exit:
ssusb_host_exit(ssusb);
gadget_exit:
ssusb_gadget_exit(ssusb);
comm_exit: