linux.git/drivers/usb/core/devices.c, branch v2.6.22

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: fix needless failure under certain conditions

2007-02-16T23:32:17+00:00

in devices.c we have a piece of code for dealing with losing in a race.
If we indeed lose the race we don't care whether our own memory allocation
worked. The check for that is so early that we return early even if we
don't have to.

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

USB: a bit more coding style cleanup

2007-02-07T23:44:40+00:00

I was sitting in a train threatened to be blocked by ice. I took this
as a hint to do some more boring work for the common good. Here's
a bit more for coding style.

Signed-off-by: Oliver Neukum 
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

USB: devices: Use usb_endpoint_* functions

2006-12-01T22:23:28+00:00

Signed-off-by: Luiz Fernando N. Capitulino 
Signed-off-by: Greg Kroah-Hartman

USB: Remove unneeded void * casts in core files

2006-09-27T18:58:59+00:00

The patch removes unneeded casts for the following (void *) pointers:
 - struct file: private
 - struct urb: context
 - struct usb_bus: hcpriv
 - return value of kmalloc()

The patch also contains some whitespace cleanup in the relevant areas.

Signed-off-by: Tobias Klauser 
Signed-off-by: Greg Kroah-Hartman

USB: Make file operations structs in drivers/usb const.

2006-09-27T18:58:52+00:00

Making structs const prevents accidental bugs and with the proper debug
options they're protected against corruption.

Signed-off-by: Luiz Fernando N. Capitulino 
Signed-off-by: Greg Kroah-Hartman

[PATCH] USB: convert a bunch of USB semaphores to mutexes

2006-03-20T22:49:55+00:00

the patch below converts a bunch of semaphores-used-as-mutex in the USB
code to mutexes

Signed-off-by: Arjan van de Ven 
Signed-off-by: Greg Kroah-Hartman

[PATCH] USB: mark various usb tables const

2006-01-04T21:51:40+00:00

patch below marks various USB tables and variables as const so that they
end up in .rodata section and don't cacheline share with things that get
written to. For the non-array variables it also allows gcc to optimize
more.

Signed-off-by: Arjan van de Ven 
Signed-off-by: Greg Kroah-Hartman

[PATCH] USB: Remove USB private semaphore

2006-01-04T21:48:34+00:00

This patch (as605) removes the private udev->serialize semaphore,
relying instead on the locking provided by the embedded struct device's
semaphore.  The changes are confined to the core, except that the
usb_trylock_device routine now uses the return convention of
down_trylock rather than down_read_trylock (they return opposite values
for no good reason).

A couple of other associated changes are included as well:

	Now that we aren't concerned about HCDs that avoid using the
	hcd glue layer, usb_disconnect no longer needs to acquire the
	usb_bus_lock -- that can be done by usb_remove_hcd where it
	belongs.

	Devices aren't locked over the same scope of code in
	usb_new_device and hub_port_connect_change as they used to be.
	This shouldn't cause any trouble.

Along with the preceding driver core patch, this needs a lot of testing.

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