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

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

arch/um/drivers/line.c

+2 −2
Original line number Diff line number Diff line
@@ -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;

}