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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-03-21 10:53:39 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-26 16:40:12 +0900 |
| commit | 03d8bfc13089e657faf2ea73884ec3c726d8a6f9 (patch) | |
| tree | 933f3b979b1541460cc27c19590c5066b08daf74 /drivers/usb/mtu3 | |
| parent | bb31b352510be206d2797b2225e6ae37ff567c8e (diff) | |
| download | linux-03d8bfc13089e657faf2ea73884ec3c726d8a6f9.tar.gz | |
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>
Diffstat (limited to 'drivers/usb/mtu3')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_dr.c | 13 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 8 |
2 files changed, 16 insertions, 5 deletions
diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c index ac60e9c8564e..61694c40e101 100644 --- a/drivers/usb/mtu3/mtu3_dr.c +++ b/drivers/usb/mtu3/mtu3_dr.c @@ -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) diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index e086630e41a9..dee31d5eefe1 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -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: |