Staging: sb105x: Fix a possible null dereference
This patch fixes the following error in sb_pc_mp.c-
drivers/staging/sb105x/sb_pci_mp.c:546 mp_startup() error: we previously assumed 'info->tty' could be null (see line 525)
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/sb105x/sb_pci_mp.c b/drivers/staging/sb105x/sb_pci_mp.c
index adb6bea..bc53b4e 100644
--- a/drivers/staging/sb105x/sb_pci_mp.c
+++ b/drivers/staging/sb105x/sb_pci_mp.c
@@ -543,14 +543,14 @@
if (init_hw) {
mp_change_speed(state, NULL);
- if (info->tty->termios.c_cflag & CBAUD)
+ if (info->tty && (info->tty->termios.c_cflag & CBAUD))
uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR);
}
info->flags |= UIF_INITIALIZED;
-
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
}
if (retval && capable(CAP_SYS_ADMIN))