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@@ -2818,6 +2818,20 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
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return 0;
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}
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+static void hub_port_error_notify(struct usb_device *udev)
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+{
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+ char port_state[32] = { 0 };
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+ char *envp[] = { port_state, NULL };
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+
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+ if (udev && udev->bus) {
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+ snprintf(port_state, ARRAY_SIZE(port_state),
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+ "USB_ERR_PORT_NUM=%d", udev->bus->busnum - 1);
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+ printk("hub port error notify name:%s at bus:%d\n", dev_name(&udev->dev), udev->bus->busnum);
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+
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+ kobject_uevent_env(&udev->dev.kobj, KOBJ_CHANGE, envp);
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+ }
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+}
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+
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/* Handle port reset and port warm(BH) reset (for USB3 protocol ports) */
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static int hub_port_reset(struct usb_hub *hub, int port1,
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struct usb_device *udev, unsigned int delay, bool warm)
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@@ -2914,7 +2928,8 @@ static int hub_port_reset(struct usb_hub *hub, int port1,
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warm ? "warm " : "");
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delay = HUB_LONG_RESET_TIME;
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}
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-
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+
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+ hub_port_error_notify(udev);
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dev_err(&port_dev->dev, "Cannot enable. Maybe the USB cable is bad?\n");
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done:
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