Commit 1a2c4b31 authored by Sascha Hauer's avatar Sascha Hauer Committed by Linus Torvalds

imx: Check for NULL pointer deref before calling tty_encode_baud_rate

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0ccad870
......@@ -924,11 +924,13 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios,
rational_best_approximation(16 * div * baud, sport->port.uartclk,
1 << 16, 1 << 16, &num, &denom);
if (port->info && port->info->port.tty) {
tdiv64 = sport->port.uartclk;
tdiv64 *= num;
do_div(tdiv64, denom * 16 * div);
tty_encode_baud_rate(sport->port.info->port.tty,
(speed_t)tdiv64, (speed_t)tdiv64);
}
num -= 1;
denom -= 1;
......
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