[uml-devel] [patch 1/8] uml: avoid NULL dereference in line.c

[uml-devel] [patch 1/8] uml: avoid NULL dereference in line.c

[blaisorblade_spam]

From: Frank Sorenson <frank@tuxrocks.com>

This patch reorders two lines to check a variable for NULL before using 
the variable.

Signed-off-by: Frank Sorenson <frank@tuxrocks.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
---

 linux-2.6.11-paolo/arch/um/drivers/line.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN arch/um/drivers/line.c~uml-reorder_null_check arch/um/drivers/line.c
--- linux-2.6.11/arch/um/drivers/line.c~uml-reorder_null_check	2005-01-13 01:54:17.163057872 +0100
+++ linux-2.6.11-paolo/arch/um/drivers/line.c	2005-01-13 01:54:17.166057416 +0100
@@ -593,8 +593,8 @@ irqreturn_t winch_interrupt(int irq, voi
 		}
 	}
 	tty  = winch->tty;
-	line = tty->driver_data;
 	if (tty != NULL) {
+		line = tty->driver_data;
 		chan_window_size(&line->chan_list,
 				 &tty->winsize.ws_row, 
 				 &tty->winsize.ws_col);
_


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