From: Gabor Juhos <juhosg@openwrt.org>
Date: Fri, 5 Mar 2010 20:29:29 +0000 (+0000)
Subject: ar71xx: don't init PCI irqs on the AR7240 if the PCIe subsystem are in reset
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=97c35a7ddee72865cf4a304af19fff598ae537c9;p=openwrt%2Fstaging%2Fmans0n.git

ar71xx: don't init PCI irqs on the AR7240 if the PCIe subsystem are in reset

SVN-Revision: 20007
---

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
index 212ff12997..13d25c43fd 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
@@ -158,8 +158,15 @@ static struct irqaction ar724x_pci_irqaction = {
 
 static void __init ar724x_pci_irq_init(void)
 {
+	u32 t;
 	int i;
 
+	t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
+	if (t & (AR724X_RESET_PCIE | AR724X_RESET_PCIE_PHY |
+		 AR724X_RESET_PCIE_PHY_SERIAL)) {
+		return;
+	}
+
 	ar71xx_ip2_irq_handler = ar724x_pci_irq_dispatch;
 
 	ar724x_pci_wr(AR724X_PCI_REG_INT_MASK, 0);