From 174f13076717b8c7b70a18a474a0541a31d24527 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Sat, 10 Feb 2007 01:44:52 -0800 Subject: [PATCH] Char: isicom, fix locking in isr 2 spin_unlocks are omitted in the interrupt handler. Put them there to fix up deadlocking on UP. Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/char/isicom.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/char') diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 26d3f78..c837ade 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -564,6 +564,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) port = card->ports + channel; if (!(port->flags & ASYNC_INITIALIZED)) { outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); return IRQ_HANDLED; } @@ -678,6 +679,7 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id) tty_flip_buffer_push(tty); } outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); return IRQ_HANDLED; } -- cgit v1.1