From 83f7d958eab2fbc6b159ee92bf1493924e1d0f72 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 25 Apr 2007 15:15:43 -0400 Subject: [PATCH] USB: add "busnum" attribute for USB devices This patch (as903) adds a "busnum" sysfs attribute for USB devices. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/sysfs.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 2ea47a38aefa..e7c982377488 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -117,6 +117,16 @@ show_speed(struct device *dev, struct device_attribute *attr, char *buf) } static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL); +static ssize_t +show_busnum(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_device *udev; + + udev = to_usb_device(dev); + return sprintf(buf, "%d\n", udev->bus->busnum); +} +static DEVICE_ATTR(busnum, S_IRUGO, show_busnum, NULL); + static ssize_t show_devnum(struct device *dev, struct device_attribute *attr, char *buf) { @@ -347,6 +357,7 @@ static struct attribute *dev_attrs[] = { &dev_attr_bNumConfigurations.attr, &dev_attr_bMaxPacketSize0.attr, &dev_attr_speed.attr, + &dev_attr_busnum.attr, &dev_attr_devnum.attr, &dev_attr_version.attr, &dev_attr_maxchild.attr, -- 2.20.1