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[PATCH] USB: add modalias sysfs file for usb devices

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Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg KH
2005-05-10 06:45:10 -07:00
parent 25b6f08e3f
commit 360b52b089
1 changed files with 34 additions and 0 deletions
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34
drivers/usb/core/sysfs.c
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@@ -286,6 +286,39 @@ static ssize_t show_interface_string(struct device *dev, char *buf)
} }
static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL); static DEVICE_ATTR(interface, S_IRUGO, show_interface_string, NULL);
static ssize_t show_modalias(struct device *dev, char *buf)
{
struct usb_interface *intf;
struct usb_device *udev;
intf = to_usb_interface(dev);
udev = interface_to_usbdev(intf);
if (udev->descriptor.bDeviceClass == 0) {
struct usb_host_interface *alt = intf->cur_altsetting;
return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X\n",
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct),
le16_to_cpu(udev->descriptor.bcdDevice),
udev->descriptor.bDeviceClass,
udev->descriptor.bDeviceSubClass,
udev->descriptor.bDeviceProtocol,
alt->desc.bInterfaceClass,
alt->desc.bInterfaceSubClass,
alt->desc.bInterfaceProtocol);
} else {
return sprintf(buf, "usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic*isc*ip*\n",
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct),
le16_to_cpu(udev->descriptor.bcdDevice),
udev->descriptor.bDeviceClass,
udev->descriptor.bDeviceSubClass,
udev->descriptor.bDeviceProtocol);
}
}
static DEVICE_ATTR(modalias, S_IRUGO, show_modalias, NULL);
static struct attribute *intf_attrs[] = { static struct attribute *intf_attrs[] = {
&dev_attr_bInterfaceNumber.attr, &dev_attr_bInterfaceNumber.attr,
&dev_attr_bAlternateSetting.attr, &dev_attr_bAlternateSetting.attr,
@@ -293,6 +326,7 @@ static struct attribute *intf_attrs[] = {
&dev_attr_bInterfaceClass.attr, &dev_attr_bInterfaceClass.attr,
&dev_attr_bInterfaceSubClass.attr, &dev_attr_bInterfaceSubClass.attr,
&dev_attr_bInterfaceProtocol.attr, &dev_attr_bInterfaceProtocol.attr,
&dev_attr_modalias.attr,
NULL, NULL,
}; };
static struct attribute_group intf_attr_grp = { static struct attribute_group intf_attr_grp = {