hvc_console handles -EPIPE properly when the connection to the host is
lost.
Signed-off-by: Amit Shah <amit.shah@xxxxxxxxxx>
---
drivers/char/virtio_console.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 1ae11f4..733276d 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -660,7 +660,7 @@ static int put_chars(u32 vtermno, const char *buf, int count)
port = find_port_by_vtermno(vtermno);
if (!port)
- return 0;
+ return -EPIPE;
return send_buf(port, (void *)buf, count);
}
@@ -676,9 +676,13 @@ static int get_chars(u32 vtermno, char *buf, int count)
{
struct port *port;
+ /* If we've not set up the port yet, we have no input to give. */
+ if (unlikely(early_put_chars))
+ return 0;
+
port = find_port_by_vtermno(vtermno);
if (!port)
- return 0;
+ return -EPIPE;
/* If we don't have an input queue yet, we can't get input. */
BUG_ON(!port->in_vq);
--
1.6.2.5
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