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Commit 199eebba authored by Al Viro's avatar Al Viro Committed by Richard Weinberger
Browse files

um: deadlock in line_write_interrupt() 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 64405360

arch/um/drivers/line.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -344,6 +344,7 @@ static irqreturn_t line_write_interrupt(int irq, void *data) 
	spin_lock(&line->lock);

	spin_lock(&line->lock);

	err = flush_buffer(line);

	err = flush_buffer(line);

	if (err == 0) {

	if (err == 0) {

		spin_unlock(&line->lock);

		return IRQ_NONE;

		return IRQ_NONE;

	} else if (err < 0) {

	} else if (err < 0) {

		line->head = line->buffer;

		line->head = line->buffer;