From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Thu, 22 Jul 2010 09:56:38 +0000 (+0200)
Subject: firewire: nosy: fix IRQ handler for card ejection
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=165476671f731b4c3d6cf401d0e1886f4a4f4a8e;p=linux-edison.git

firewire: nosy: fix IRQ handler for card ejection

Untested, I don't have a PCILynx CardBus card.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---

diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c
index 57a1100f8f4..a241b62630b 100644
--- a/drivers/firewire/nosy.c
+++ b/drivers/firewire/nosy.c
@@ -444,6 +444,10 @@ irq_handler(int irq, void *device)
 
 	pci_int_status = reg_read(lynx, PCI_INT_STATUS);
 
+	if (pci_int_status == ~0)
+		/* Card was ejected. */
+		return IRQ_NONE;
+
 	if ((pci_int_status & PCI_INT_INT_PEND) == 0)
 		/* Not our interrupt, bail out quickly. */
 		return IRQ_NONE;