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| author | Alexander Beregalov <a.beregalov@gmail.com> | 2010-03-05 13:42:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 11:26:28 -0800 |
| commit | 03315b59165ee2049a4b903a1b0b8bf673d701fa (patch) | |
| tree | 92513448a8af5e2a0b1f228310154fea14e44c2b /arch | |
| parent | be1494527c4dea4db87749d08b09be23327157dc (diff) | |
| download | linux-03315b59165ee2049a4b903a1b0b8bf673d701fa.tar.bz2 | |
uml: line.c: avoid NULL pointer dereference
Assign tty only if line is not NULL.
[akpm@linux-foundation.org: simplification]
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/drivers/line.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index cf8a97f34518..64cda95f59ca 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -18,10 +18,10 @@ static irqreturn_t line_interrupt(int irq, void *data) { struct chan *chan = data; struct line *line = chan->line; - struct tty_struct *tty = line->tty; + struct tty_struct *tty; if (line) - chan_interrupt(&line->chan_list, &line->task, tty, irq); + chan_interrupt(&line->chan_list, &line->task, line->tty, irq); return IRQ_HANDLED; } |