[PATCH] x86_64: {set,clear,test}_bit() related cleanup and pci_mmcfg_init() fix

While working on these patch set, I found several possible cleanup on x86-64
and ia64.

akpm: I stole this from Andi's queue.

Not only does it clean up bitops.  It also unrelatedly changes the prototype
of pci_mmcfg_init() and removes its arch_initcall().  It seems that the wrong
two patches got joined together, but this is the one which has been tested.

This patch fixes the current x86_64 build error (the pci_mmcfg_init()
declaration in arch/i386/pci/pci.h disagrees with the definition in
arch/x86_64/pci/mmconfig.c)

This also means that x86_64's pci_mmcfg_init() gets called in the same (new)
manner as x86's: from arch/i386/pci/init.c:pci_access_init(), rather than via
initcall.

The bitops cleanups came along for free.

All this worked OK in -mm testing (since 2.6.16-rc4-mm1) because x86_64 was
tested with both patches applied.

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Con Kolivas <kernel@kolivas.org>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 2 insertions, 4 deletions

diff --git a/arch/x86_64/kernel/mce.c b/arch/x86_64/kernel/mce.c
index b8b9529fa89e..04282ef9fbd4 100644
--- a/arch/x86_64/kernel/mce.c
+++ b/arch/x86_64/kernel/mce.c
@@ -139,8 +139,7 @@ static void mce_panic(char *msg, struct mce *backup, unsigned long start)
 
 static int mce_available(struct cpuinfo_x86 *c)
 {
-        return test_bit(X86_FEATURE_MCE, &c->x86_capability) &&
-               test_bit(X86_FEATURE_MCA, &c->x86_capability);
+        return cpu_has(c, X86_FEATURE_MCE) && cpu_has(c, X86_FEATURE_MCA);
 }
 
 static inline void mce_get_rip(struct mce *m, struct pt_regs *regs)
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index aa55e3cec665..f227d0c23dc6 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -1344,8 +1344,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
         { 
                 int i; 
                 for ( i = 0 ; i < 32*NCAPINTS ; i++ )
-                        if ( test_bit(i, &c->x86_capability) &&
-                             x86_cap_flags[i] != NULL )
+                        if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
                                 seq_printf(m, " %s", x86_cap_flags[i]);
         }