linux.git/Documentation/usb, branch v2.6.23

USB: usb/dma doc updates

2007-07-12T23:34:42+00:00

This patch updates some of the documentation about DMA buffer management
for USB, and ways to avoid extra copying.  Our understanding of the issues
has improved over time.

 - Most drivers should *avoid* the dma-coherent allocators.  There are
   a few exceptions (like the HID driver).

 - Some methods are currently commented out; it seems folk writing
   USB drivers aren't doing performance tuning at that level yet.

 - Just avoid highmem; there's no good way to pass an "I can do highmem
   DMA" capability through a driver stack.  This is easy, everything
   already avoids highmem.  But it'd be nice if x86_32 systems with much
   physical memory could use it directly with network adapters and mass
   storage devices.  (Patch, anyone?)

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

USB: add power/persist device attribute

2007-07-12T23:34:30+00:00

This patch (as920) adds an extra level of protection to the
USB-Persist facility.  Now it will apply by default only to hubs; for
all other devices the user must enable it explicitly by setting the
power/persist device attribute.

The disconnect_all_children() routine in hub.c has been removed and
its code placed inline.  This is the way it was originally as part of
hub_pre_reset(); the revised usage in hub_reset_resume() is
sufficiently different that the code can no longer be shared.
Likewise, mark_children_for_reset() is now inline as part of
hub_reset_resume().  The end result looks much cleaner than before.

The sysfs interface is updated to add the new attribute file, and
there are corresponding documentation updates.

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

USB: add USB-Persist facility

2007-07-12T23:29:47+00:00

This patch (as886) adds the controversial USB-persist facility,
allowing USB devices to persist across a power loss during system
suspend.

The facility is controlled by a new Kconfig option (with appropriate
warnings about the potential dangers); when the option is off the
behavior will remain the same as it is now.  But when the option is
on, people will be able to use suspend-to-disk and keep their USB
filesystems intact -- something particularly valuable for small
machines where the root filesystem is on a USB device!

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

documentation: convert the Documentation directory to UTF-8

2007-05-09T06:58:19+00:00

Convert files within the Documentation directory to UTF-8.

Adrian Bunk:
small additional fixes

Signed-off-by: John Anthony Kazos Jr. 
Signed-off-by: Adrian Bunk

MAINTAINER change for Connect Tech Inc

2007-05-05T00:41:21+00:00

I am no longer with CTI. The Support Department will handle all
inquiries regarding the WH.

Signed-off-by: Stuart MacDonald 
Signed-off-by: Linus Torvalds

usbmon: Extended text API

2007-04-27T20:28:33+00:00

This patch adds a new text API, codenamed '1u', which captures more URB
fields than old '1t' interface did. Also the '1u' text API is compatible
with the future "bus zero" extension.

Signed-off-by: Pete Zaitcev 
Acked-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: add binary API to usbmon

2007-02-07T23:44:34+00:00

This patch adds a new, "binary" API in addition to the old, text API usbmon
had before. The new API allows for less CPU use, and it allows to capture
all data from a packet where old API only captured 32 bytes at most. There
are some limitations and conditions to this, e.g. in case someone constructs
a URB with 1GB of data, it's not likely to be captured, because even the
huge buffers of the new reader are finite. Nonetheless, I expect this new
capability to capture all data for all real life scenarios.

The downside is, a special user mode application is required where cat(1)
worked before. I have sample code at http://people.redhat.com/zaitcev/linux/
and Paolo Abeni is working on patching libpcap.

This patch was initially written by Paolo and later I tweaked it, and
we had a little back-and-forth. So this is a jointly authored patch, but
I am submitting this I am responsible for the bugs.

Signed-off-by: Paolo Abeni 
Signed-off-by: Pete Zaitcev 
Signed-off-by: Greg Kroah-Hartman

USB: indicate active altsetting in proc/bus/usb/devices file

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

Update /proc/bus/usb/devices output to report active altsettings.

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

Change Linus' email address too

2007-01-23T22:22:35+00:00

This changes a few mentions of my email address to point to the new one,
leaving things like old copyright messages alone.

Signed-off-by: Linus Torvalds

USB: small update to Documentation/usb/acm.txt

2007-01-05T20:19:09+00:00

this docu update mentions that cell phones also use cdc-acm.

Signed-off-by: Oliver Neukum