This is a note to let you know that I've just added the patch titled
USB: serial: kl5kusb105: fix line-state error handling
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-serial-kl5kusb105-fix-line-state-error-handling.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 146cc8a17a3b4996f6805ee5c080e7101277c410 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Tue, 10 Jan 2017 12:05:37 +0100
Subject: USB: serial: kl5kusb105: fix line-state error handling
From: Johan Hovold <johan@xxxxxxxxxx>
commit 146cc8a17a3b4996f6805ee5c080e7101277c410 upstream.
The current implementation failed to detect short transfers when
attempting to read the line state, and also, to make things worse,
logged the content of the uninitialised heap transfer buffer.
Fixes: abf492e7b3ae ("USB: kl5kusb105: fix DMA buffers on stack")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/kl5kusb105.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -192,10 +192,11 @@ static int klsi_105_get_line_state(struc
status_buf, KLSI_STATUSBUF_LEN,
10000
);
- if (rc < 0)
- dev_err(&port->dev, "Reading line status failed (error = %d)\n",
- rc);
- else {
+ if (rc != KLSI_STATUSBUF_LEN) {
+ dev_err(&port->dev, "reading line status failed: %d\n", rc);
+ if (rc >= 0)
+ rc = -EIO;
+ } else {
status = get_unaligned_le16(status_buf);
dev_info(&port->serial->dev->dev, "read status %x %x\n",
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-4.4/usb-serial-ch341-fix-control-message-error-handling.patch
queue-4.4/usb-serial-ch341-fix-open-and-resume-after-b0.patch
queue-4.4/usb-serial-ch341-fix-open-error-handling.patch
queue-4.4/usb-serial-ch341-fix-initial-modem-control-state.patch
queue-4.4/usb-serial-kl5kusb105-fix-line-state-error-handling.patch
queue-4.4/usb-serial-ch341-fix-resume-after-reset.patch
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