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[PATCH] usbcore: allow suspend/resume even if drivers don't support it

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This patch (as618) changes usbcore to prevent derailing the
suspend/resume sequence when a USB driver doesn't include support for
it.  This is a workaround rather than a true fix; the core needs to be
changed so that URB submissions from suspended drivers can be refused
and outstanding URBs cancelled.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alan Stern 2005-12-21 14:28:11 -08:00 committed by Linus Torvalds
parent 28120be5d6
commit 5a9191ff68
1 changed files with 6 additions and 3 deletions
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9
drivers/usb/core/usb.c
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@ -1432,7 +1432,8 @@ static int usb_generic_suspend(struct device *dev, pm_message_t message)
mark_quiesced(intf);
} else {
// FIXME else if there's no suspend method, disconnect...
dev_warn(dev, "no %s?\n", "suspend");
dev_warn(dev, "no suspend for driver %s?\n", driver->name);
mark_quiesced(intf);
status = 0;
}
return status;
@ -1460,8 +1461,10 @@ static int usb_generic_resume(struct device *dev)
}
if ((dev->driver == NULL) ||
(dev->driver_data == &usb_generic_driver_data))
(dev->driver_data == &usb_generic_driver_data)) {
dev->power.power_state.event = PM_EVENT_FREEZE;
return 0;
}
intf = to_usb_interface(dev);
driver = to_usb_driver(dev->driver);
@ -1481,7 +1484,7 @@ static int usb_generic_resume(struct device *dev)
mark_quiesced(intf);
}
} else
dev_warn(dev, "no %s?\n", "resume");
dev_warn(dev, "no resume for driver %s?\n", driver->name);
return 0;
}