MCG_CAP never reports a negative count of available error-reporting
banks. Make it unsigned.
Check for MCA/MCE feature bits as early as possible. While here, do an
indent cleanup.
Signed-off-by: Christoph Egger <[EMAIL PROTECTED]>
Signed-off-by: Joerg Roedel <[EMAIL PROTECTED]>
---
arch/i386/kernel/cpu/mcheck/mce.c | 57 ++++++++++++++++++++++--------------
arch/i386/kernel/cpu/mcheck/mce.h | 2 +-
2 files changed, 36 insertions(+), 23 deletions(-)
diff --git a/arch/i386/kernel/cpu/mcheck/mce.c
b/arch/i386/kernel/cpu/mcheck/mce.c
index 34c781e..2eb72ad 100644
--- a/arch/i386/kernel/cpu/mcheck/mce.c
+++ b/arch/i386/kernel/cpu/mcheck/mce.c
@@ -17,7 +17,7 @@
#include "mce.h"
int mce_disabled = 0;
-int nr_mce_banks;
+unsigned int nr_mce_banks;
EXPORT_SYMBOL_GPL(nr_mce_banks); /* non-fatal.o */
@@ -33,30 +33,43 @@ void fastcall (*machine_check_vector)(struct pt_regs *,
long error_code) = unexp
/* This has to be run for each processor */
void mcheck_init(struct cpuinfo_x86 *c)
{
- if (mce_disabled==1)
+ uint32_t mca, mce;
+
+ if (mce_disabled == 1) {
+ printk("MCE support disabled by bootparam\n");
+ return;
+ }
+
+ mca = cpu_has(c, X86_FEATURE_MCA);
+ mce = cpu_has(c, X86_FEATURE_MCE);
+
+ if (!mca || !mce) {
+ printk(KERN_INFO "CPU%i: No machine check support available\n",
+ smp_processor_id());
return;
+ }
switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- amd_mcheck_init(c);
- break;
-
- case X86_VENDOR_INTEL:
- if (c->x86==5)
- intel_p5_mcheck_init(c);
- if (c->x86==6)
- intel_p6_mcheck_init(c);
- if (c->x86==15)
- intel_p4_mcheck_init(c);
- break;
-
- case X86_VENDOR_CENTAUR:
- if (c->x86==5)
- winchip_mcheck_init(c);
- break;
-
- default:
- break;
+ case X86_VENDOR_AMD:
+ amd_mcheck_init(c);
+ break;
+
+ case X86_VENDOR_INTEL:
+ if (c->x86==5)
+ intel_p5_mcheck_init(c);
+ if (c->x86==6)
+ intel_p6_mcheck_init(c);
+ if (c->x86==15)
+ intel_p4_mcheck_init(c);
+ break;
+
+ case X86_VENDOR_CENTAUR:
+ if (c->x86==5)
+ winchip_mcheck_init(c);
+ break;
+
+ default:
+ break;
}
}
diff --git a/arch/i386/kernel/cpu/mcheck/mce.h
b/arch/i386/kernel/cpu/mcheck/mce.h
index 81fb6e2..9cbe812 100644
--- a/arch/i386/kernel/cpu/mcheck/mce.h
+++ b/arch/i386/kernel/cpu/mcheck/mce.h
@@ -10,5 +10,5 @@ void winchip_mcheck_init(struct cpuinfo_x86 *c);
/* Call the installed machine check handler for this CPU setup. */
extern fastcall void (*machine_check_vector)(struct pt_regs *, long
error_code);
-extern int nr_mce_banks;
+extern unsigned int nr_mce_banks;
--
1.5.1.6
-
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