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Message-Id: <029d7029bc1186fbd2ec74123dc88922b9600660.1352366215.git.amit.shah@redhat.com>
Date: Thu, 8 Nov 2012 10:17:03 +0100
From: Amit Shah <amit.shah@...hat.com>
To: Rusty Russell <rusty@...tcorp.com.au>
Cc: sjur@...ndeland.net, "Michael S. Tsirkin" <mst@...hat.com>,
linus.walleij@...aro.org, masami.hiramatsu.pt@...achi.com,
ohad@...ery.com, linux-kernel@...r.kernel.org,
virtualization@...ts.linux-foundation.org,
Sjur Brændeland <sjur.brandeland@...ricsson.com>,
Amit Shah <amit.shah@...hat.com>
Subject: [[PATCH v9 3/3] 1/1] virtio_console: Remove buffers from out_vq at port removal
From: Sjur Brændeland <sjur.brandeland@...ricsson.com>
Remove buffers from the out-queue when a port is removed. Rproc_serial
communicates with remote processors that may crash and leave buffers in
the out-queue. The virtio serial ports may have buffers in the out-queue
as well, e.g. for non-blocking ports and the host didn't consume them
yet.
[Amit: Remove WARN_ON for generic ports case.]
Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>
Signed-off-by: Amit Shah <amit.shah@...hat.com>
---
drivers/char/virtio_console.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 9ebadcb..5ff3b3e 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1521,6 +1521,10 @@ static void remove_port_data(struct port *port)
/* Remove buffers we queued up for the Host to send us data in. */
while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
free_buf(buf, true);
+
+ /* Remove buffers we queued up for the Host to consume */
+ while ((buf = virtqueue_detach_unused_buf(port->out_vq)))
+ free_buf(buf, true);
}
/*
--
1.7.7.6
--
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