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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-06-16 20:02:15 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 23:01:17 +0400 |
| commit | 1a2c4b3147ac0645605d6def2855478861d9361b (patch) | |
| tree | 1efe2b21ce9356f7a0427f18b6ba910ca4134232 | |
| parent | 0ccad87012c6c2e7446e4dc0f0894cf182a5270a (diff) | |
| download | linux-1a2c4b3147ac0645605d6def2855478861d9361b.tar.xz | |
imx: Check for NULL pointer deref before calling tty_encode_baud_rate
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/serial/imx.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 285b414f3054..5d7b58f1fe42 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -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); - 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); + 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; |