x86/PCI: never allocate PCI MMIO resources below BIOS_END

[firefly-linux-kernel-4.4.55.git] / arch / x86 / pci / i386.c

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 46fd43f791037cb318b6de9405435f434f84065b..97da2ba9344b4ca7fa1f08d7cd015fe77a332ea6 100644 (file)
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -72,6 +72,9 @@ pcibios_align_resource(void *data, const struct resource *res,
                        return start;
                if (start & 0x300)
                        start = (start + 0x3ff) & ~0x3ff;
+       } else if (res->flags & IORESOURCE_MEM) {
+               if (start < BIOS_END)
+                       start = BIOS_END;
        }
        return start;
 }