x86, cpuid: Simplify the code in cpuid_open

Peter picked up my patch for tip/x86/cpu that removes the bkl in
cpuid_open. Ingo subsequently merged that into tip/master.

This patch folds back in tglx's 55968ede164ae523692f00717f50cd926f1382a0
to my patch that removed the bkl.

This simplifies the code, and makes it consistent with the changes to
kill the bkl in msr.c as well.

Originally-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index ef6928418c8f90bc0120b1550307ef84a53afe9d..48e8e6558b26330061315a91dab13b2a7eb8380f 100644 (file)
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -116,18 +116,16 @@ static int cpuid_open(struct inode *inode, struct file *file)
 {
        unsigned int cpu;
        struct cpuinfo_x86 *c;
-       int ret = 0;
 
        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 (c->cpuid_level < 0)
-               ret = -EIO;     /* CPUID not supported */
-out:
-       return ret;
+               return -EIO;    /* CPUID not supported */
+
+       return 0;
 }
 
 /*