From: Bin Meng <bmeng.cn@gmail.com>
Date: Wed, 15 Jul 2015 08:23:41 +0000 (+0800)
Subject: x86: pci: Do not assign irq 0 to pci device
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6fc0e8a1fa7be0babaaeb6f171154ba26a8fa644;p=project%2Fbcm63xx%2Fu-boot.git

x86: pci: Do not assign irq 0 to pci device

IRQ 0 is reserved and should not be assigned to pci device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/x86/cpu/pci.c b/arch/x86/cpu/pci.c
index fdfd5f7b9c..f8da08035e 100644
--- a/arch/x86/cpu/pci.c
+++ b/arch/x86/cpu/pci.c
@@ -172,6 +172,8 @@ void pci_assign_irqs(int bus, int device, u8 irq[4])
 			continue;
 
 		line = irq[pin - 1];
+		if (!line)
+			continue;
 
 		debug("Assigning IRQ %d to PCI device %d.%x.%d (INT%c)\n",
 		      line, bus, device, func, 'A' + pin - 1);