linux/include/uapi
Alan Stern 70c17f4a9c USB: usbfs: allow URBs to be reaped after disconnection
commit 3f2cee73b6 upstream.

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 <stern@rowland.harvard.edu>
Tested-by: Chris Dickens <christopher.a.dickens@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-08-11 09:57:29 +01:00
..
asm-generic asm-generic: Add renameat2 syscall 2014-05-20 10:59:38 +02:00
drm drm/vmwgfx: Fix drm.h include 2014-11-17 14:11:48 +00:00
linux USB: usbfs: allow URBs to be reaped after disconnection 2015-08-11 09:57:29 +01:00
mtd mtd: lpddr: add driver for LPDDR2-NVM PCM memories 2014-05-20 17:45:17 -07:00
rdma RDMA/uapi: Include socket.h in rdma_user_cm.h 2014-09-17 09:22:17 -07:00
scsi FCoE Updates for 3.9 2013-03-01 09:10:08 +00:00
sound ALSA: compress: fix the struct alignment to 4 bytes 2014-06-23 12:15:33 +02:00
video UAPI: (Scripted) Disintegrate include/video 2012-12-20 17:14:26 +00:00
xen xen: install xen/gntdev.h and xen/gntalloc.h 2014-02-11 10:12:36 -05:00
Kbuild UAPI: (Scripted) Set up UAPI Kbuild files 2012-10-02 18:01:35 +01:00