mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-30 08:02:30 +00:00
Code Issues Releases Wiki Activity

USB: serial: mct_u232: fix big-endian baud-rate handling

Browse source 
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: af2ac1a091 ("USB: serial mct_usb232: move DMA buffers to heap")
Cc: stable <stable@vger.kernel.org>     # 2.6.34
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-By: Pete Zaitcev <zaitcev@yahoo.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Johan Hovold 2017-05-11 11:41:20 +02:00
parent ad0ccac76d
commit 26cede3436
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/usb/serial/mct_u232.c
View file

@ -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,