ar71xx: check returned value of ioremap in ar71xx_pcibios_setup

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20288 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/arch/mips/pci/pci-ar71xx.c b/target/linux/ar71xx/files/arch/mips/pci/pci-ar71xx.c
index 88eb917..7d0eee9 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/pci/pci-ar71xx.c
+++ b/target/linux/ar71xx/files/arch/mips/pci/pci-ar71xx.c
@@ -384,6 +384,8 @@ int __init ar71xx_pcibios_init(void)
 
        ar71xx_pcicfg_base = ioremap_nocache(AR71XX_PCI_CFG_BASE,
                                                AR71XX_PCI_CFG_SIZE);
+       if (ar71xx_pcicfg_base == NULL)
+               return -ENOMEM;
 
        __raw_writel(PCI_WIN0_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN0);
        __raw_writel(PCI_WIN1_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN1);