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authorKay Sievers <kay.sievers@vrfy.org>2007-03-13 15:59:31 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-27 13:28:37 -0700
commit9f8b17e643fe6aa505629658445849397bda4e4f (patch)
tree30c45914f7be9f355db30964323673c7d37080e8 /include/linux
parent87840289637e9ea95118ebd76e2e335fdcddd725 (diff)
USB: make usbdevices export their device nodes instead of using a separate class
o The "real" usb-devices export now a device node which can populate /dev/bus/usb. o The usb_device class is optional now and can be disabled in the kernel config. Major/minor of the "real" devices and class devices are the same. o The environment of the usb-device event contains DEVNUM and BUSNUM to help udev and get rid of the ugly udev rule we need for the class devices. o The usb-devices and usb-interfaces share the same bus, so I used the new "struct device_type" to let these devices identify themselves. This also removes the current logic of using a magic platform-pointer. The name of the device_type is also added to the environment which makes it easier to distinguish the different kinds of devices on the same subsystem. It looks like this: add@/devices/pci0000:00/0000:00:1d.1/usb2/2-1 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb2/2-1 SUBSYSTEM=usb SEQNUM=1533 MAJOR=189 MINOR=131 DEVTYPE=usb_device PRODUCT=46d/c03e/2000 TYPE=0/0/0 BUSNUM=002 DEVNUM=004 This udev rule works as a replacement for usb_device class devices: SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", \ NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0644" Updated patch, which needs the device_type patches in Greg's tree. I also got a bugzilla assigned for this. :) https://bugzilla.novell.com/show_bug.cgi?id=250659 Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/usb.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 5e8e144afba..f9e4445d5b5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -299,8 +299,9 @@ struct usb_bus {
int bandwidth_int_reqs; /* number of Interrupt requests */
int bandwidth_isoc_reqs; /* number of Isoc. requests */
+#ifdef CONFIG_USB_DEVICEFS
struct dentry *usbfs_dentry; /* usbfs dentry entry for the bus */
-
+#endif
struct class_device *class_dev; /* class device for this bus */
#if defined(CONFIG_USB_MON)
@@ -373,9 +374,12 @@ struct usb_device {
char *serial; /* iSerialNumber string, if present */
struct list_head filelist;
- struct device *usbfs_dev;
+#ifdef CONFIG_USB_DEVICE_CLASS
+ struct device *usb_classdev;
+#endif
+#ifdef CONFIG_USB_DEVICEFS
struct dentry *usbfs_dentry; /* usbfs dentry entry for the device */
-
+#endif
/*
* Child devices - these can be either new devices
* (if this is a hub device), or different instances