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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-28 12:30:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-28 12:30:59 -0700 |
| commit | e52c8857e0ca3214aa7e2a746000ac0f3016b345 (patch) | |
| tree | 9fdc6bbe990a8d8dd5fc74c2145e990ae8f2f916 /arch/x86/lib/msr-on-cpu.c | |
| parent | 9c2bdac40eba639c438690b1245a020e7c2530df (diff) | |
| parent | c1b362e3b4d331a63915b268a33207311a439d60 (diff) | |
| download | linux-e52c8857e0ca3214aa7e2a746000ac0f3016b345.tar.gz linux-e52c8857e0ca3214aa7e2a746000ac0f3016b345.tar.bz2 linux-e52c8857e0ca3214aa7e2a746000ac0f3016b345.zip | |
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: update defconfigs
x86: msr: fix bogus return values from rdmsr_safe/wrmsr_safe
x86: cpuid: correct return value on partial operations
x86: msr: correct return value on partial operations
x86: cpuid: propagate error from smp_call_function_single()
x86: msr: propagate errors from smp_call_function_single()
smp: have smp_call_function_single() detect invalid CPUs
Diffstat (limited to 'arch/x86/lib/msr-on-cpu.c')
| -rw-r--r-- | arch/x86/lib/msr-on-cpu.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/arch/x86/lib/msr-on-cpu.c b/arch/x86/lib/msr-on-cpu.c index d5a2b39f882b..01b868ba82f8 100644 --- a/arch/x86/lib/msr-on-cpu.c +++ b/arch/x86/lib/msr-on-cpu.c @@ -30,10 +30,11 @@ static int _rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h, int safe) rv.msr_no = msr_no; if (safe) { - smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 1); - err = rv.err; + err = smp_call_function_single(cpu, __rdmsr_safe_on_cpu, + &rv, 1); + err = err ? err : rv.err; } else { - smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1); + err = smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1); } *l = rv.l; *h = rv.h; @@ -64,23 +65,24 @@ static int _wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h, int safe) rv.l = l; rv.h = h; if (safe) { - smp_call_function_single(cpu, __wrmsr_safe_on_cpu, &rv, 1); - err = rv.err; + err = smp_call_function_single(cpu, __wrmsr_safe_on_cpu, + &rv, 1); + err = err ? err : rv.err; } else { - smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1); + err = smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1); } return err; } -void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) { - _wrmsr_on_cpu(cpu, msr_no, l, h, 0); + return _wrmsr_on_cpu(cpu, msr_no, l, h, 0); } -void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) { - _rdmsr_on_cpu(cpu, msr_no, l, h, 0); + return _rdmsr_on_cpu(cpu, msr_no, l, h, 0); } /* These "safe" variants are slower and should be used when the target MSR |