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>hifive-unleashed-5.1
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be1494527c
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03315b5916
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@ -18,10 +18,10 @@ static irqreturn_t line_interrupt(int irq, void *data)
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{
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{
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struct chan *chan = data;
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struct chan *chan = data;
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struct line *line = chan->line;
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struct line *line = chan->line;
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struct tty_struct *tty = line->tty;
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struct tty_struct *tty;
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if (line)
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if (line)
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chan_interrupt(&line->chan_list, &line->task, tty, irq);
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chan_interrupt(&line->chan_list, &line->task, line->tty, irq);
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return IRQ_HANDLED;
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return IRQ_HANDLED;
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}
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}
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