linux.git/drivers/usb/core/message.c, branch v2.6.23

usb: add PRODUCT, TYPE to usb-interface events

2007-08-22T21:28:02+00:00

This fixes a regression for userspace programs that were relying on these events.


Signed-off-by: Kay Sievers 
Cc: Andreas Jellinghaus 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

USB: allow retry on descriptor fetch errors

2007-08-22T21:27:58+00:00

This patch (as964) was suggested by Steffen Koepf.  It makes
usb_get_descriptor() retry on all errors other than ETIMEDOUT, instead
of only on EPIPE.  This helps with some devices.

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

USB: Fix a bug in usb_start_wait_urb

2007-07-30T20:27:45+00:00

This patch (as941) fixes a bug recently added to the USB synchronous
API.  The status of a completed URB must be preserved separately
across a completion callback.  Also, the actual_length value isn't
available until after the URB has fully completed.

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

USB: fix scatterlist PIO case (IOMMU)

2007-07-30T20:27:45+00:00

Update the scatterlist logic so that PIO options are also disabled
when an IOMMU may have coalesced pages during dma_map_sg() ... it's
not just HIGHMEM that can make trouble supporting both PIO and DMA
based host controller drivers.

There also seems to be a cross-arch issue here, with 64bit powerpc
not using an IOMMU define ... and its IOMMU_VMERGE config can always
be overridden on the kernel command line.  So this is better, but
still imperfect.

Signed-off-by: David Brownell 
Signed-off-by: Greg Kroah-Hartman

USB: core: message: clean up urb->status usage

2007-07-20T00:46:06+00:00

This done in anticipation of removal of urb->status, which will make
that patch easier to review and apply in the future.

Signed-off-by: Greg Kroah-Hartman

USB: add IAD support to usbfs and sysfs

2007-07-12T23:34:40+00:00

USB_IAD: Adds support for USB Interface Association Descriptors.

This patch adds support to the USB host stack for parsing, storing, and
displaying Interface Association Descriptors. In /proc/bus/usb/devices
lines starting with A: show the fields in an IAD. In sysfs if an
interface on a USB device is referenced by an IAD the following files
will be added to the sysfs directory for that interface:
iad_bFirstInterface, iad_bInterfaceCount, iad_bFunctionClass, and
iad_bFunctionSubClass, iad_bFunctionProtocol

Signed-off-by: Craig W. Nadler 
Signed-off-by: Greg Kroah-Hartman

USB: Fix off-by-1 error in the scatter-gather library

2007-07-12T23:34:39+00:00

The loop in usb_sg_wait() is structured in a way that makes it hard to
tell, when the loop exits, whether or not the last URB submission
succeeded.  This patch (as928) changes it from a "for" loop to a
"while" loop and keeps "i" always equal to the number of successful
submissions.  This fixes an off-by-one error which can show up when
the first URB submission fails.

The patch also removes a couple of lines that initialize fields which
don't need to be initialized.

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

USB: set the correct Interrupt interval in usb_bulk_msg

2007-05-23T06:45:49+00:00

This patch (as902) fixes a mistake I introduced into usb_bulk_msg().
usb_fill_int_urb() already does the bit-shifting calculation for
high-speed Interrupt intervals; it shouldn't be done twice.

Signed-off-by: Alan Stern

USB: Allow transfer_buffer with transfer_dma

2007-04-27T20:28:39+00:00

Some host controller drivers may need a PIO fallback when a DMA channel
is temporarily unavailable.  This patch provides an address that such
drivers can use for PIO in those cases, and nulls that field out when
no such address is available (highmem) which should help usbmon.

Signed-off-by: Tony Lindgren 
Signed-off-by: David Brownell 
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