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linux/include/uapi
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Alan Stern 3e2003cccc USB: usbfs: allow URBs to be reaped after disconnection 
[ Upstream commit 3f2cee73b6 ]

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: Sasha Levin <sasha.levin@oracle.com>
History 2015-08-04 14:38:38 -04:00
..
asm-generic bpf: enable bpf syscall on x64 and i386 2014-09-26 15:05:14 -04:00
drm drm/radeon: Add RADEON_INFO_VA_UNMAP_WORKING query 2015-07-01 22:07:25 -04:00
linux USB: usbfs: allow URBs to be reaped after disconnection 2015-08-04 14:38:38 -04:00
misc cxl: Add documentation for userspace APIs 2014-10-08 20:16:19 +11:00
mtd mtd: lpddr: add driver for LPDDR2-NVM PCM memories 2014-05-20 17:45:17 -07:00
rdma Merge branches 'core', 'cxgb4', 'ipoib', 'iser', 'iwcm', 'mad', 'misc', 'mlx4', 'mlx5', 'ocrdma' and 'srp' into for-next 2014-08-14 08:58:04 -07:00
scsi FCoE Updates for 3.9 2013-03-01 09:10:08 +00:00
sound ALSA: pcm: Add big-endian DSD sample formats and fix XMOS DSD sample format 2014-11-21 15:13:28 +01:00
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 cxl: Add userspace header file 2014-10-08 20:15:57 +11:00