]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/commit - drivers/usb/core/hub.c
[PATCH] usb_interface power state
authorDavid Brownell <david-b@pacbell.net>
Wed, 14 Sep 2005 02:56:33 +0000 (19:56 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 28 Oct 2005 23:47:38 +0000 (16:47 -0700)
commitdb69087437dd5135a9362da1c37fe072070e8f60
tree1affacd290eff29b5dc589bbf47369e20d6101db
parent7586269c0b52970f60bb69fcb86e765fc1d72309
[PATCH] usb_interface power state

This updates the handling of power state for USB interfaces.

  - Formalizes an existing invariant:  interface "power state" is a boolean:
    ON when I/O is allowed, and FREEZE otherwise.  It does so by defining
    some inlined helpers, then using them.

  - Adds a useful invariant:  the only interfaces marked active are those
    bound to non-suspended drivers.  Later patches build on this invariant.

  - Simplifies the interface driver API (and removes some error paths) by
    removing the requirement that they record power state changes during
    suspend and resume callbacks.  Now usbcore does that.

A few drivers were simplified to address that last change.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
 drivers/usb/core/hub.c       |   33 +++++++++------------
 drivers/usb/core/message.c   |    1
 drivers/usb/core/usb.c       |   65 +++++++++++++++++++++++++++++++++----------
 drivers/usb/core/usb.h       |   18 +++++++++++
 drivers/usb/input/hid-core.c |    2 -
 drivers/usb/misc/usbtest.c   |   10 ------
 drivers/usb/net/pegasus.c    |    2 -
 drivers/usb/net/usbnet.c     |    2 -
 8 files changed, 85 insertions(+), 48 deletions(-)
drivers/usb/core/hub.c
drivers/usb/core/message.c
drivers/usb/core/usb.c
drivers/usb/core/usb.h
drivers/usb/input/hid-core.c
drivers/usb/misc/usbtest.c
drivers/usb/net/pegasus.c
drivers/usb/net/usbnet.c