Commit cb4a10cc authored Feb 10, 2007 by Jiri Slaby Committed by Linus Torvalds Feb 11, 2007

[PATCH] Char: isicom, check card state in isr



Check if the card really interrupted us by reading its IO space and eventualy
return IRQ_NONE.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent f0a0ba6d

drivers/char/isicom.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -540,6 +540,11 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id)
		return IRQ_NONE;

		base = card->base;

		/* did the card interrupt us? */
		if (!(inw(base + 0x0e) & 0x02))
		return IRQ_NONE;

		spin_lock(&card->card_lock);

		/*