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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 15:32:35 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 15:32:35 -0800
commit83be7d764dc4b860712e392197ec27645f9d74a8 (patch)
tree9d6f0a8e9e57478b206e033bbb264b739fe2b130 /arch/x86/kernel/msr.c
parentc2ed69cdc9da49a8d2d7b4212fd225abf902ceaa (diff)
parent0d0fbbddcc27c062815732b38c44b544e656c799 (diff)
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, msr, cpumask: Use struct cpumask rather than the deprecated cpumask_t x86, cpuid: Simplify the code in cpuid_open x86, cpuid: Remove the bkl from cpuid_open() x86, msr: Remove the bkl from msr_open() x86: AMD Geode LX optimizations x86, msr: Unify rdmsr_on_cpus/wrmsr_on_cpus
Diffstat (limited to 'arch/x86/kernel/msr.c')
-rw-r--r--arch/x86/kernel/msr.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 6a3cefc7dda1..553449951b84 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -174,21 +174,17 @@ static int msr_open(struct inode *inode, struct file *file)
{
unsigned int cpu = iminor(file->f_path.dentry->d_inode);
struct cpuinfo_x86 *c = &cpu_data(cpu);
- int ret = 0;
- lock_kernel();
cpu = iminor(file->f_path.dentry->d_inode);
- if (cpu >= nr_cpu_ids || !cpu_online(cpu)) {
- ret = -ENXIO; /* No such CPU */
- goto out;
- }
+ if (cpu >= nr_cpu_ids || !cpu_online(cpu))
+ return -ENXIO; /* No such CPU */
+
c = &cpu_data(cpu);
if (!cpu_has(c, X86_FEATURE_MSR))
- ret = -EIO; /* MSR not supported */
-out:
- unlock_kernel();
- return ret;
+ return -EIO; /* MSR not supported */
+
+ return 0;
}
/*