diff options
| author | David Brownell <david-b@pacbell.net> | 2005-09-13 19:56:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-10-28 16:47:38 -0700 |
| commit | db69087437dd5135a9362da1c37fe072070e8f60 (patch) | |
| tree | 1affacd290eff29b5dc589bbf47369e20d6101db /drivers/usb/net | |
| parent | 7586269c0b52970f60bb69fcb86e765fc1d72309 (diff) | |
| download | linux-db69087437dd5135a9362da1c37fe072070e8f60.tar.bz2 | |
[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/net')
| -rw-r--r-- | drivers/usb/net/pegasus.c | 2 | ||||
| -rw-r--r-- | drivers/usb/net/usbnet.c | 2 |
2 files changed, 0 insertions, 4 deletions
diff --git a/drivers/usb/net/pegasus.c b/drivers/usb/net/pegasus.c index 6a4ffe6c3977..537eb181d985 100644 --- a/drivers/usb/net/pegasus.c +++ b/drivers/usb/net/pegasus.c @@ -1384,7 +1384,6 @@ static int pegasus_suspend (struct usb_interface *intf, pm_message_t message) usb_kill_urb(pegasus->rx_urb); usb_kill_urb(pegasus->intr_urb); } - intf->dev.power.power_state = PMSG_SUSPEND; return 0; } @@ -1392,7 +1391,6 @@ static int pegasus_resume (struct usb_interface *intf) { struct pegasus *pegasus = usb_get_intfdata(intf); - intf->dev.power.power_state = PMSG_ON; netif_device_attach (pegasus->net); if (netif_running(pegasus->net)) { pegasus->rx_urb->status = 0; diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c index fce81d738933..74f05c9c84d5 100644 --- a/drivers/usb/net/usbnet.c +++ b/drivers/usb/net/usbnet.c @@ -1185,7 +1185,6 @@ int usbnet_suspend (struct usb_interface *intf, pm_message_t message) netif_device_detach (dev->net); (void) unlink_urbs (dev, &dev->rxq); (void) unlink_urbs (dev, &dev->txq); - intf->dev.power.power_state = PMSG_SUSPEND; return 0; } EXPORT_SYMBOL_GPL(usbnet_suspend); @@ -1194,7 +1193,6 @@ int usbnet_resume (struct usb_interface *intf) { struct usbnet *dev = usb_get_intfdata(intf); - intf->dev.power.power_state = PMSG_ON; netif_device_attach (dev->net); tasklet_schedule (&dev->bh); return 0; |