[SERIAL] remove unneeded code from serial_core.c

This patch fixes an issue reported by Coverity in serial/serial_core.c

Error reported: Variable "&((info)->tty)->flags" tracked as NULL was passed to a
function that dereferences it.

The later statements in the function assumes 'info->tty != NULL', so this
check is not necessary.  Probably a 'BUG_ON(info->tty == NULL)' can be added.

Signed-off-by: Jayachandran C. <c.jayachandran at gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 2d8622e..401d94a 100644 (file)
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -147,8 +147,7 @@ static int uart_startup(struct uart_state *state, int init_hw)
         * once we have successfully opened the port.  Also set
         * up the tty->alt_speed kludge
         */
-       if (info->tty)
-               set_bit(TTY_IO_ERROR, &info->tty->flags);
+       set_bit(TTY_IO_ERROR, &info->tty->flags);
 
        if (port->type == PORT_UNKNOWN)
                return 0;