These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / x86 / platform / efi / efi-bgrt.c

diff --git a/kernel/arch/x86/platform/efi/efi-bgrt.c b/kernel/arch/x86/platform/efi/efi-bgrt.c
index d7f997f..ea48449 100644 (file)
--- a/kernel/arch/x86/platform/efi/efi-bgrt.c
+++ b/kernel/arch/x86/platform/efi/efi-bgrt.c
@@ -50,11 +50,16 @@ void __init efi_bgrt_init(void)
                       bgrt_tab->version);
                return;
        }
-       if (bgrt_tab->status != 1) {
-               pr_err("Ignoring BGRT: invalid status %u (expected 1)\n",
+       if (bgrt_tab->status & 0xfe) {
+               pr_err("Ignoring BGRT: reserved status bits are non-zero %u\n",
                       bgrt_tab->status);
                return;
        }
+       if (bgrt_tab->status != 1) {
+               pr_debug("Ignoring BGRT: invalid status %u (expected 1)\n",
+                        bgrt_tab->status);
+               return;
+       }
        if (bgrt_tab->image_type != 0) {
                pr_err("Ignoring BGRT: invalid image type %u (expected 0)\n",
                       bgrt_tab->image_type);