This is a note to let you know that I've just added the patch titled
USB: serial: mct_u232: fix big-endian baud-rate handling
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 26cede343656c0bc2c33cdc783771282405c7fb2 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Thu, 11 May 2017 11:41:20 +0200
Subject: USB: serial: mct_u232: fix big-endian baud-rate handling
Drop erroneous cpu_to_le32 when setting the baud rate, something which
corrupted the divisor on big-endian hosts.
Found using sparse:
warning: incorrect type in argument 1 (different base types)
expected unsigned int [unsigned] [usertype] val
got restricted __le32 [usertype] <noident>
Fixes: af2ac1a091bc ("USB: serial mct_usb232: move DMA buffers to heap")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 2.6.34
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Acked-By: Pete Zaitcev <zaitcev@xxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/serial/mct_u232.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index edbc81f205c2..70f346f1aa86 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -189,7 +189,7 @@ static int mct_u232_set_baud_rate(struct tty_struct *tty,
return -ENOMEM;
divisor = mct_u232_calculate_baud_rate(serial, value, &speed);
- put_unaligned_le32(cpu_to_le32(divisor), buf);
+ put_unaligned_le32(divisor, buf);
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
MCT_U232_SET_BAUD_RATE_REQUEST,
MCT_U232_SET_REQUEST_TYPE,
--
2.13.0