diff options
| author | Amit Shah <amit.shah@redhat.com> | 2013-07-29 14:23:21 +0930 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-07-29 14:43:58 +0930 |
| commit | 96f97a83910cdb9d89d127c5ee523f8fc040a804 (patch) | |
| tree | 38578e6565dfd1e93ac3556b9c770d5fee37cc51 /drivers/scsi/virtio_scsi.c | |
| parent | 92d3453815fbe74d539c86b60dab39ecdf01bb99 (diff) | |
virtio: console: return -ENODEV on all read operations after unplug
If a port gets unplugged while a user is blocked on read(), -ENODEV is
returned. However, subsequent read()s returned 0, indicating there's no
host-side connection (but not indicating the device went away).
This also happened when a port was unplugged and the user didn't have
any blocking operation pending. If the user didn't monitor the SIGIO
signal, they won't have a chance to find out if the port went away.
Fix by returning -ENODEV on all read()s after the port gets unplugged.
write() already behaves this way.
CC: <stable@vger.kernel.org>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/scsi/virtio_scsi.c')
0 files changed, 0 insertions, 0 deletions