linux-toradex.git/drivers/usb/core/devio.c, branch v2.6.23.12

usbfs micro optimitation

2007-04-27T20:28:42+00:00

the memory barrier is needed only with smp.

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: make usbdevices export their device nodes instead of using a separate class

2007-04-27T20:28:37+00:00

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 
Signed-off-by: Greg Kroah-Hartman

USB: remove use of the bus rwsem, as it doesn't really protect anything.

2007-04-27T17:57:30+00:00

The driver core stopped using the rwsem a long time ago, yet the USB
core still grabbed the lock, thinking it protected something.  This
patch removes that useless use.

Cc: Alan Stern 
Cc: Oliver Neukum 
Cc: David Brownell 
Cc: linux-usb-devel 
Signed-off-by: Greg Kroah-Hartman

USB: set the correct interval for interrupt URBs

2007-03-10T03:52:23+00:00

This patch (as862) fixes a couple of bugs in the way usbcore handles
intervals for interrupt URBs.  usb_interrupt_msg (and usb_bulk_msg for
backward compatibility) don't set the interval correctly for
high-speed devices.  proc_do_submiturb() doesn't set it correctly when
a bulk URB is submitted to an interrupt endpoint.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: unconfigure devices which have config 0

2007-02-16T23:32:21+00:00

Some USB devices do have a configuration 0, in contravention of the
USB spec.  Normally 0 is supposed to indicate that a device is
unconfigured.

While we can't change what the device is doing, we can change usbcore.
This patch (as852) allows usb_set_configuration() to accept a config
value of -1 as indicating that the device should be unconfigured.  The
request actually sent to the device will still contain 0 as the value.
But even if the device does have a configuration 0, dev->actconfig
will be set to NULL and dev->state will be set to USB_STATE_ADDRESS.

Without some sort of special-case handling like this, there is no way
to unconfigure these non-compliant devices.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: devio.c add missing INIT_LIST_HEAD()

2007-02-07T23:44:33+00:00

It should hopefully fix the list corruption bug on:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=214402

Add a missing INIT_LIST_HEAD()

Signed-off-by: Dan Carpenter 
Signed-off-by: Greg Kroah-Hartman

USB: move usb_device_class class devices to be real devices

2007-02-07T23:44:30+00:00

This moves the usb class devices that control the usbfs nodes to show up
in the proper place in the larger device tree.

Cc: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

USB: fix to usbfs_snoop logging of user defined control urbs

2006-12-20T18:14:28+00:00

When sending CONTROL URB's using the usual CONTROL ioctl, logging works
fine, but when sending them via SUBMITURB, like VMWare does, the
control fields are not logged.  This patch fixes that.

I didn't see any major changes to devio.c recently, so this patch should apply
cleanly to even the latest kernel.  I can resubmit if it doesn't.

From: Chris Frey 
Signed-off-by: Greg Kroah-Hartman

usbcore: remove unused argument in autosuspend

2006-12-01T22:25:53+00:00

Thanks to several earlier patches, usb_autosuspend_device() and
usb_autoresume_device() are never called with a second argument other
than 1.  This patch (as819) removes the now-redundant argument.

It also consolidates some common code between those two routines,
putting it into a new subroutine called usb_autopm_do_device().  And
it includes a sizable kerneldoc update for the affected functions.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

usb devio: handle class_device_create() error

2006-10-17T21:46:32+00:00

This patch adds missing class_device_create() error check,
and makes notifier return NOTIFY_BAD.

Signed-off-by: Akinobu Mita 
Signed-off-by: Greg Kroah-Hartman