EFI: warn only for pre-1.00 system tables

We used to warn unless the EFI system table major revision was exactly 1.
But EFI 2.00 firmware is starting to appear, and the 2.00 changes don't
affect anything in Linux.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 78d29b79947d..75ec3478d8a2 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -445,11 +445,11 @@ efi_init (void)
                 panic("Woah! Can't find EFI system table.\n");
         if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
                 panic("Woah! EFI system table signature incorrect\n");
-        if ((efi.systab->hdr.revision ^ EFI_SYSTEM_TABLE_REVISION) >> 16 != 0)
-                printk(KERN_WARNING "Warning: EFI system table major version mismatch: "
-                       "got %d.%02d, expected %d.%02d\n",
-                       efi.systab->hdr.revision >> 16, efi.systab->hdr.revision & 0xffff,
-                       EFI_SYSTEM_TABLE_REVISION >> 16, EFI_SYSTEM_TABLE_REVISION & 0xffff);
+        if ((efi.systab->hdr.revision >> 16) == 0)
+                printk(KERN_WARNING "Warning: EFI system table version "
+                       "%d.%02d, expected 1.00 or greater\n",
+                       efi.systab->hdr.revision >> 16,
+                       efi.systab->hdr.revision & 0xffff);
 
         config_tables = __va(efi.systab->tables);