x86, cpufeature: Fix cpuid leaf 7 feature detection

CPUID leaf 7, subleaf 0 returns the maximum subleaf in EAX, not the
number of subleaves.  Since so far only subleaf 0 is defined (and only
the EBX bitfield) we do not need to qualify the test.

Signed-off-by: Fenghua Yu <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>
Cc: <[email protected]> 2.6.36..39

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index e2ced0074a45c1ffee1eeb1a7e8d56657824847f..173f3a3fa1a63dcacc5c1aec67341e5f19f118f6 100644 (file)
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -565,8 +565,7 @@ void __cpuinit get_cpu_cap(struct cpuinfo_x86 *c)
 
                cpuid_count(0x00000007, 0, &eax, &ebx, &ecx, &edx);
 
-               if (eax > 0)
-                       c->x86_capability[9] = ebx;
+               c->x86_capability[9] = ebx;
        }
 
        /* AMD-defined flags: level 0x80000001 */