linux.git/drivers/usb/core/usb.c, branch v2.6.24

USB: uevent environment key fix

2007-11-28T21:58:35+00:00

This patch (as1010) was written by both Kay Sievers and me.  It solves
the problem of duplicated keys in USB uevent structures by refactoring
the uevent subroutines, taking advantage of the way the hotplug core
calls uevent handlers for the device's bus and for the device's type.
Keys needed for both USB-device and USB-interface events are added in
usb_uevent(), which is the bus handler.  Keys appropriate only for
USB-device or USB-interface events are added in usb_dev_uevent() or
usb_if_uevent() respectively, the type handlers.

In addition, unnecessary tests for NULL pointers are removed as are
duplicated debugging log statements.

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

cleanup asm/scatterlist.h includes

2007-11-02T07:47:06+00:00

Not architecture specific code should not #include .

This patch therefore either replaces them with
#include  or simply removes them if they were
unused.

Signed-off-by: Adrian Bunk 
Signed-off-by: Jens Axboe

security/ cleanups

2007-10-17T15:43:07+00:00

This patch contains the following cleanups that are now possible:
- remove the unused security_operations->inode_xattr_getsuffix
- remove the no longer used security_operations->unregister_security
- remove some no longer required exit code
- remove a bunch of no longer used exports

Signed-off-by: Adrian Bunk 
Acked-by: James Morris 
Cc: Chris Wright 
Cc: Stephen Smalley 
Cc: Serge Hallyn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

USB: Export URB statistics for powertop

2007-10-12T21:55:30+00:00

powertop currently tracks interrupts generated by uhci, ehci, and ohci,
but it has no way of telling which USB device to blame USB bus activity on.
This patch exports the number of URBs that are submitted for a given device.
Cat the file 'urbnum' in /sys/bus/usb/devices/.../

Signed-off-by: Sarah Sharp 
Signed-off-by: Greg Kroah-Hartman

USB: flush outstanding URBs when suspending

2007-10-12T21:55:26+00:00

This patch (as989) makes usbcore flush all outstanding URBs for each
device as the device is suspended.  This will be true even when
CONFIG_USB_SUSPEND is not enabled.

In addition, an extra can_submit flag is added to the usb_device
structure.  That flag will be turned off whenever a suspend request
has been received for the device, even if the device isn't actually
suspended because CONFIG_USB_SUSPEND isn't set.

It's no longer necessary to check for the device state being equal to
USB_STATE_SUSPENDED during URB submission; that check can be replaced
by a check of the can_submit flag.  This also permits us to remove
some questionable references to the deprecated power.power_state field.

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

usb: initialize authorization and wusb bits in USB devices

2007-10-12T21:55:05+00:00

Signed-off-by: Inaky Perez-Gonzalez 
Signed-off-by: Greg Kroah-Hartman

USB: avoid using urb->pipe in usbcore

2007-10-12T21:55:00+00:00

This patch (as946) eliminates many of the uses of urb->pipe in
usbcore.  Unfortunately there will have to be a significant API
change, affecting all USB drivers, before we can remove it entirely.
This patch contents itself with changing only the interface to
usb_buffer_map_sg() and friends: The pipe argument is replaced with a
direction flag.  That can be done easily because those routines get
used in only one place.

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

USB: add ep->enable

2007-10-12T21:55:00+00:00

This patch (as944) adds an explicit "enabled" field to the
usb_host_endpoint structure and uses it in place of the current
mechanism.  This is merely a time-space tradeoff; it makes checking
whether URBs may be submitted to an endpoint simpler.  The existing
mechanism is efficient when converting urb->pipe to an endpoint
pointer, but it's not so efficient when urb->ep is used instead.

As a side effect, the procedure for enabling an endpoint is now a
little more complicated.  The ad-hoc inline code in usb.c and hub.c
for enabling ep0 is now replaced with calls to usb_enable_endpoint,
which is no longer static.

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

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: make the usb_device numa_node get assigned from controller

2007-07-12T23:34:41+00:00

So we can use dev_to_node(&usb_dev->dev) later in kmalloc_node to dma buffer

Signed-off-by: Yinghai Lu 
Cc: Andi Kleen 
Acked-by: Christoph Lameter 
Cc: David Rientjes 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman