1 files changed, 6 insertions, 1 deletions

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 9efbdcc56425..3755ef494390 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -159,7 +159,12 @@ static void __init ati_bugs_contd(int num, int slot, int func)
         if (rev >= 0x40)
                 acpi_fix_pin2_polarity = 1;
 
-        if (rev > 0x13)
+        /*
+         * SB600: revisions 0x11, 0x12, 0x13, 0x14, ...
+         * SB700: revisions 0x39, 0x3a, ...
+         * SB800: revisions 0x40, 0x41, ...
+         */
+        if (rev >= 0x39)
                 return;
 
         if (acpi_use_timer_override)