From: Alan Stern Date: Thu, 8 Feb 2007 21:40:43 +0000 (-0500) Subject: USB: unconfigure devices which have config 0 X-Git-Tag: v2.6.21-rc1~82^2~14 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f141e2aed586c41c2666d49c70c1c1bbb6d6abd;p=pandora-kernel.git USB: unconfigure devices which have config 0 Some USB devices do have a configuration 0, in contravention of the USB spec. Normally 0 is supposed to indicate that a device is unconfigured. While we can't change what the device is doing, we can change usbcore. This patch (as852) allows usb_set_configuration() to accept a config value of -1 as indicating that the device should be unconfigured. The request actually sent to the device will still contain 0 as the value. But even if the device does have a configuration 0, dev->actconfig will be set to NULL and dev->state will be set to USB_STATE_ADDRESS. Without some sort of special-case handling like this, there is no way to unconfigure these non-compliant devices. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed