Commit 03315b59 authored by Alexander Beregalov's avatar Alexander Beregalov Committed by Linus Torvalds

uml: line.c: avoid NULL pointer dereference

Assign tty only if line is not NULL.

[akpm@linux-foundation.org: simplification]
Signed-off-by: default avatarAlexander Beregalov <a.beregalov@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent be149452
...@@ -18,10 +18,10 @@ static irqreturn_t line_interrupt(int irq, void *data) ...@@ -18,10 +18,10 @@ static irqreturn_t line_interrupt(int irq, void *data)
{ {
struct chan *chan = data; struct chan *chan = data;
struct line *line = chan->line; struct line *line = chan->line;
struct tty_struct *tty = line->tty; struct tty_struct *tty;
if (line) if (line)
chan_interrupt(&line->chan_list, &line->task, tty, irq); chan_interrupt(&line->chan_list, &line->task, line->tty, irq);
return IRQ_HANDLED; return IRQ_HANDLED;
} }
......
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