From 97cd8dc4ca9a1a5efb2cc38758e01492e3b013e2 Mon Sep 17 00:00:00 2001
From: Alon Ziv <alon+git@nolaviz.org>
Date: Sun, 10 Oct 2010 08:32:18 +0200
Subject: [PATCH] USB: opticon: Fix long-standing bugs in opticon driver
The bulk-read callback had two bugs:
a) The bulk-in packet's leading two zeros were returned (and the two last
bytes truncated)
b) The wrong URB was transmitted for the second (and later) read requests,
causing further reads to return the entire packet (including leading
zeros)
Signed-off-by: Alon Ziv <alon-git@nolaviz.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/serial/opticon.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index ed01f3b2de8c..9ff19c8a122e 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -96,8 +96,8 @@ static void opticon_bulk_callback(struct urb *urb)
/* real data, send it to the tty layer */
tty = tty_port_tty_get(&port->port);
if (tty) {
- tty_insert_flip_string(tty, data,
- data_length);
+ tty_insert_flip_string(tty, data + 2,
+ data_length);
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
@@ -130,7 +130,7 @@ exit:
priv->bulk_address),
priv->bulk_in_buffer, priv->buffer_size,
opticon_bulk_callback, priv);
- result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+ result = usb_submit_urb(priv->bulk_read_urb, GFP_ATOMIC);
if (result)
dev_err(&port->dev,
"%s - failed resubmitting read urb, error %d\n",
--
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