x86: optimise x86's do_page_fault (C entry point for the page fault path)
[linux-2.6.git] / arch / ia64 / sn / kernel / sn2 / sn2_smp.c
index dfc6bf1..e585f9a 100644 (file)
@@ -512,6 +512,8 @@ static ssize_t sn2_ptc_proc_write(struct file *file, const char __user *user, si
        int cpu;
        char optstr[64];
 
+       if (count == 0 || count > sizeof(optstr))
+               return -EINVAL;
        if (copy_from_user(optstr, user, count))
                return -EFAULT;
        optstr[count - 1] = '\0';
@@ -550,11 +552,12 @@ static int __init sn2_ptc_init(void)
        if (!ia64_platform_is("sn2"))
                return 0;
 
-       if (!(proc_sn2_ptc = create_proc_entry(PTC_BASENAME, 0444, NULL))) {
+       proc_sn2_ptc = proc_create(PTC_BASENAME, 0444,
+                                  NULL, &proc_sn2_ptc_operations);
+       if (!&proc_sn2_ptc_operations) {
                printk(KERN_ERR "unable to create %s proc entry", PTC_BASENAME);
                return -EINVAL;
        }
-       proc_sn2_ptc->proc_fops = &proc_sn2_ptc_operations;
        spin_lock_init(&sn2_global_ptc_lock);
        return 0;
 }