diff options
author | Amit Shah <amit.shah@redhat.com> | 2010-09-02 08:41:46 -0400 |
---|---|---|
committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-10-21 03:14:01 -0400 |
commit | f4028119714e452f9b49377ec55e0ed1e5d1dfa4 (patch) | |
tree | e70fbd9de352e639feb5892292bb707a7b7672a7 | |
parent | b3dddb9e6ddab74327f5557c1a6640ea0f56ad1c (diff) |
virtio: console: Make write() return -ENODEV on hot-unplug
When a port is hot-unplugged while an app was blocked on a write() call,
the call was unblocked but would not get an error returned.
Return -ENODEV to ensure the app knows the port has gone away.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
-rw-r--r-- | drivers/char/virtio_console.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index e17ecf5d42b5..70f1c38fa14c 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c | |||
@@ -626,6 +626,9 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, | |||
626 | if (ret < 0) | 626 | if (ret < 0) |
627 | return ret; | 627 | return ret; |
628 | } | 628 | } |
629 | /* Port got hot-unplugged. */ | ||
630 | if (!port->guest_connected) | ||
631 | return -ENODEV; | ||
629 | 632 | ||
630 | count = min((size_t)(32 * 1024), count); | 633 | count = min((size_t)(32 * 1024), count); |
631 | 634 | ||