uml: DEBUG_SHIRQ fixes

[pandora-kernel.git] / arch / um / drivers / line.c

diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index fac058b..2c898c4 100644 (file)
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -774,9 +774,11 @@ static irqreturn_t winch_interrupt(int irq, void *data)
        tty = winch->tty;
        if (tty != NULL) {
                line = tty->driver_data;
-               chan_window_size(&line->chan_list, &tty->winsize.ws_row,
-                                &tty->winsize.ws_col);
-               kill_pgrp(tty->pgrp, SIGWINCH, 1);
+               if (line != NULL) {
+                       chan_window_size(&line->chan_list, &tty->winsize.ws_row,
+                                        &tty->winsize.ws_col);
+                       kill_pgrp(tty->pgrp, SIGWINCH, 1);
+               }
        }
  out:
        if (winch->fd != -1)