From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andrew Worsley , Lotfi Manseur , Greg Kroah-Hartman Subject: [ 18/21] USB: serial: ftdi_sio: Handle the old_termios == 0 case e.g. uart_resume_port() Date: Tue, 11 Jun 2013 13:03:12 -0700 Message-Id: <20130611195522.132297591@linuxfoundation.org> In-Reply-To: <20130611195520.003233586@linuxfoundation.org> References: <20130611195520.003233586@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrew Worsley commit c515598e0f5769916c31c00392cc2bfe6af74e55 upstream. Handle null old_termios in ftdi_set_termios() calls from uart_resume_port(). Signed-off-by: Andrew Worsley Signed-off-by: Greg Kroah-Hartman Cc: Lotfi Manseur Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2141,6 +2141,9 @@ static void ftdi_set_termios(struct tty_ cflag = termios->c_cflag; + if (old_termios == 0) + goto no_skip; + if (old_termios->c_cflag == termios->c_cflag && old_termios->c_ispeed == termios->c_ispeed && old_termios->c_ospeed == termios->c_ospeed) @@ -2154,6 +2157,7 @@ static void ftdi_set_termios(struct tty_ (termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB))) goto no_data_parity_stop_changes; +no_skip: /* Set number of data bits, parity, stop bits */ urb_value = 0;