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| author | Greg KH <gregkh@suse.de> | 2005-05-10 06:45:10 -0700 |
|---|---|---|
| committer | Greg KH <gregkh@suse.de> | 2005-05-16 21:44:26 -0700 |
| commit | 360b52b08972ada8fd4421e9a7bcbe1ea186c20e (patch) | |
| tree | 06067522d817b8a792176b1076ce5a9d0c216f2b /drivers | |
| parent | 25b6f08e3fa0d84e26a373a205cfdad208b54af7 (diff) | |
| download | linux-360b52b08972ada8fd4421e9a7bcbe1ea186c20e.tar.gz linux-360b52b08972ada8fd4421e9a7bcbe1ea186c20e.tar.bz2 linux-360b52b08972ada8fd4421e9a7bcbe1ea186c20e.zip | |
[PATCH] USB: add modalias sysfs file for usb devices
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/core/sysfs.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index ec9b3bde8ae5..4ab50009291d 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -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 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[] = { &dev_attr_bInterfaceNumber.attr, &dev_attr_bAlternateSetting.attr, @@ -293,6 +326,7 @@ static struct attribute *intf_attrs[] = { &dev_attr_bInterfaceClass.attr, &dev_attr_bInterfaceSubClass.attr, &dev_attr_bInterfaceProtocol.attr, + &dev_attr_modalias.attr, NULL, }; static struct attribute_group intf_attr_grp = { |