Re: [PATCH] USB and driver core changes for 2.5.41

[Greg KH <greg@kroah.com>]

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
#	           ChangeSet	1.573.92.18 -> 1.573.92.19
#	drivers/usb/core/driverfs.c	1.1     -> 1.2    
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/10/08	greg@kroah.com	1.573.92.19
# USB: add device speed driverfs file.
# --------------------------------------------
#
diff -Nru a/drivers/usb/core/driverfs.c b/drivers/usb/core/driverfs.c
--- a/drivers/usb/core/driverfs.c	Tue Oct  8 15:53:35 2002
+++ b/drivers/usb/core/driverfs.c	Tue Oct  8 15:53:35 2002
@@ -99,6 +99,34 @@
 }
 static DEVICE_ATTR(serial,S_IRUGO,show_serial,NULL);
 
+static ssize_t
+show_speed (struct device *dev, char *buf, size_t count, loff_t off)
+{
+	struct usb_device *udev;
+	char *speed;
+
+	if (off)
+		return 0;
+	udev = to_usb_device (dev);
+
+	switch (udev->speed) {
+	case USB_SPEED_LOW:
+		speed = "1.5";
+		break;
+	case USB_SPEED_UNKNOWN:
+	case USB_SPEED_FULL:
+		speed = "12";
+		break;
+	case USB_SPEED_HIGH:
+		speed = "480";
+		break;
+	default:
+		speed = "unknown";
+	}
+	return sprintf (buf, "%s\n", speed);
+}
+static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
+
 /* Descriptor fields */
 #define usb_descriptor_attr(field, format_string)			\
 static ssize_t								\
@@ -136,6 +164,7 @@
 	device_create_file (dev, &dev_attr_bDeviceClass);
 	device_create_file (dev, &dev_attr_bDeviceSubClass);
 	device_create_file (dev, &dev_attr_bDeviceProtocol);
+	device_create_file (dev, &dev_attr_speed);
 
 	if (udev->descriptor.iManufacturer)
 		device_create_file (dev, &dev_attr_manufacturer);