From: Alexander Nyberg <alexn@telia.com>
Date: Mon, 4 Jul 2005 07:28:35 +0000 (+0200)
Subject: [PATCH] If ACPI doesn't find an irq listed, don't accept 0 as a valid PCI irq.
X-Git-Tag: v2.6.12.3~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ae54a329f48cb2b7d98856ceac2ad6b04d94c89;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] If ACPI doesn't find an irq listed, don't accept 0 as a valid PCI irq.

If ACPI doesn't find an irq listed, don't accept 0 as a valid PCI irq.
That zero just means that nothing else found any irq information either.

Fixes http://bugme.osdl.org/show_bug.cgi?id=4824

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 8dbf802ee7f81..d1f42b9728214 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -433,7 +433,7 @@ acpi_pci_irq_enable (
 		printk(KERN_WARNING PREFIX "PCI Interrupt %s[%c]: no GSI",
 			pci_name(dev), ('A' + pin));
 		/* Interrupt Line values above 0xF are forbidden */
-		if (dev->irq >= 0 && (dev->irq <= 0xF)) {
+		if (dev->irq > 0 && (dev->irq <= 0xF)) {
 			printk(" - using IRQ %d\n", dev->irq);
 			acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
 			return_VALUE(0);