From: Alan Stern Date: Thu, 29 Jan 2015 16:29:13 +0000 (-0500) Subject: USB: usbfs: allow URBs to be reaped after disconnection X-Git-Tag: fixes-v4.0-rc1~102^2~11 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f2cee73b650921b2e214bf487b2061a1c266504;p=pandora-kernel.git USB: usbfs: allow URBs to be reaped after disconnection The usbfs API has a peculiar hole: Users are not allowed to reap their URBs after the device has been disconnected. There doesn't seem to be any good reason for this; it is an ad-hoc inconsistency. The patch allows users to issue the USBDEVFS_REAPURB and USBDEVFS_REAPURBNDELAY ioctls (together with their 32-bit counterparts on 64-bit systems) even after the device is gone. If no URBs are pending for a disconnected device then the ioctls will return -ENODEV rather than -EAGAIN, because obviously no new URBs will ever be able to complete. The patch also adds a new capability flag for USBDEVFS_GET_CAPABILITIES to indicate that the reap-after-disconnect feature is supported. Signed-off-by: Alan Stern Tested-by: Chris Dickens Acked-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed