android_kernel_samsung_msm8976/include/uapi
Alan Stern e17805417b USB: usbfs: allow URBs to be reaped after disconnection
commit 3f2cee73b650921b2e214bf487b2061a1c266504 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 <gregkh@linuxfoundation.org>
2015-08-03 09:29:47 -07:00
..
asm-generic
drm drm/tegra: Remove gratuitous pad field 2014-06-07 13:25:32 -07:00
linux USB: usbfs: allow URBs to be reaped after disconnection 2015-08-03 09:29:47 -07:00
mtd
rdma
scsi
sound ALSA: compress: Cancel the optimization of compiler and fix the size of struct for all platform. 2014-06-26 15:12:41 -04:00
video
xen
Kbuild