diff options
| author | Chandana Kishori Chiluveru <cchiluve@codeaurora.org> | 2016-05-17 11:43:54 +0530 |
|---|---|---|
| committer | Ajay Agarwal <ajaya@codeaurora.org> | 2017-11-15 16:16:48 +0530 |
| commit | 6e8f263048db182e22bda8a4231fc54de8d04096 (patch) | |
| tree | 2cd4ae333288887418afd92a71602a324b69b9f6 /drivers/usb | |
| parent | b0ba6e47923aba09cf52ec9a92c12b114462bd9a (diff) | |
USB: core: Add USB_DEVICE_ERROR uevent for enumeration timeout
Some userspace modules expect USB driver to send event to userspace, when
usb device enumeration failure with device descriptor read errors.
Add USB_DEVICE_ERROR uevent in the USB driver to explicitly send the ERROR
uevent for such case.
Change-Id: I7128869ff0700ab90d4c949de24cd03c5c90e22e
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/hub.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c08a524f3dab..5644051b4010 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4294,6 +4294,8 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1, enum usb_device_speed oldspeed = udev->speed; const char *speed; int devnum = udev->devnum; + char *error_event[] = { + "USB_DEVICE_ERROR=Device_No_Response", NULL }; /* root hub ports have a slightly longer reset period * (from USB 2.0 spec, section 7.1.7.5) @@ -4467,6 +4469,8 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1, if (r != -ENODEV) dev_err(&udev->dev, "device descriptor read/64, error %d\n", r); + kobject_uevent_env(&udev->parent->dev.kobj, + KOBJ_CHANGE, error_event); retval = -EMSGSIZE; continue; } @@ -4519,6 +4523,8 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1, dev_err(&udev->dev, "device descriptor read/8, error %d\n", retval); + kobject_uevent_env(&udev->parent->dev.kobj, + KOBJ_CHANGE, error_event); if (retval >= 0) retval = -EMSGSIZE; } else { |