linux-toradex.git/drivers/usb/core/usb.h, branch v2.6.19

[PATCH] usb: fixup usb so it uses struct pid

2006-10-02T14:57:15+00:00

The problem with remembering a user space process by its pid is that it is
possible that the process will exit, pid wrap around will occur.
Converting to a struct pid avoid that problem, and paves the way for
implementing a pid namespace.

Also since usb is the only user of kill_proc_info_as_uid rename
kill_proc_info_as_uid to kill_pid_info_as_uid and have the new version take
a struct pid.

Signed-off-by: Eric W. Biederman 
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

USB: fix autosuspend when CONFIG_PM isn't set

2006-09-28T22:36:46+00:00

This patch (as791b) fixes things up to avoid compiler warnings or
errors when CONFIG_USB_SUSPEND or CONFIG_PM isn't set.

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

USB: create new workqueue thread for USB autosuspend

2006-09-28T22:36:44+00:00

This patch (as787) creates a new workqueue thread to handle delayed
USB autosuspend requests.  Previously the code used keventd.  However
it turns out that the hub driver's suspend routine calls
flush_scheduled_work(), making it a poor candidate for running in
keventd (the call immediately deadlocks).  The solution is to use a
new thread instead of keventd.

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

USB: fix __must_check warnings in drivers/usb/core/

2006-09-27T18:58:57+00:00

Signed-off-by: Greg Kroah-Hartman

usbcore: remove usb_suspend_root_hub

2006-09-27T18:58:57+00:00

This patch (as740) removes the existing support for autosuspend of
root hubs.  That support fit in rather awkwardly with the rest of
usbcore and it was used only by ohci-hcd.  It won't be needed any more
since the hub driver will take care of autosuspending all hubs, root
or external.

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

usbcore: add autosuspend/autoresume infrastructure

2006-09-27T18:58:57+00:00

This patch (as739) adds the basic infrastructure for USB autosuspend
and autoresume.  The main features are:

	PM usage counters added to struct usb_device and struct
	usb_interface, indicating whether it's okay to autosuspend
	them or they are currently in use.

	Flag added to usb_device indicating whether the current
	suspend/resume operation originated from outside or as an
	autosuspend/autoresume.

	Flag added to usb_driver indicating whether the driver
	supports autosuspend.  If not, no device bound to the driver
	will be autosuspended.

	Mutex added to usb_device for protecting PM operations.
	Unlike the device semaphore, the locking rule for the pm_mutex
	is that you must acquire the locks going _up_ the device tree.

	New routines handling autosuspend/autoresume requests for
	interfaces and devices.

	Suspend and resume requests are propagated up the device tree
	(but not outside the USB subsystem).

	work_struct added to usb_device, for carrying out delayed
	autosuspend requests.

	Autoresume added (and autosuspend prevented) during probe and
	disconnect.

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

USB: Turn usb_resume_both() into static inline

2006-09-27T18:58:55+00:00

drivers/usb/core/hub.c: In function `hub_events':
drivers/usb/core/hub.c:2591: warning: statement with no effect

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Greg Kroah-Hartman

USB core: Use const where possible.

2006-09-27T18:58:55+00:00

This patch marks some USB core's functions parameters as const. This
improves the design (we're saying to the caller that its parameter is
not going to be modified) and may help in compiler's optimisation work.

Signed-off-by: Luiz Fernando N. Capitulino 
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

hub driver: improve use of #ifdef

2006-09-27T18:58:50+00:00

This patch (as736) makes the hub driver more readable by improving the
usage of "#ifdef CONFIG_PM" and "#ifdef CONFIG_USB_SUSPEND".


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