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authorDavid Brownell <david-b@pacbell.net>2005-09-13 19:56:33 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2005-10-28 16:47:38 -0700
commitdb69087437dd5135a9362da1c37fe072070e8f60 (patch)
tree1affacd290eff29b5dc589bbf47369e20d6101db /drivers/usb/misc
parent7586269c0b52970f60bb69fcb86e765fc1d72309 (diff)
[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(-)
Diffstat (limited to 'drivers/usb/misc')
-rw-r--r--drivers/usb/misc/usbtest.c10
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 54799eb0bc6..d055196533a 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1948,21 +1948,11 @@ usbtest_probe (struct usb_interface *intf, const struct usb_device_id *id)
static int usbtest_suspend (struct usb_interface *intf, pm_message_t message)
{
- struct usbtest_dev *dev = usb_get_intfdata (intf);
-
- down (&dev->sem);
- intf->dev.power.power_state = PMSG_SUSPEND;
- up (&dev->sem);
return 0;
}
static int usbtest_resume (struct usb_interface *intf)
{
- struct usbtest_dev *dev = usb_get_intfdata (intf);
-
- down (&dev->sem);
- intf->dev.power.power_state = PMSG_ON;
- up (&dev->sem);
return 0;
}