[PATCH] perf.c misc_register patch

  As part of my work on the Linux Kernel Janitors project, cleaning up on
  functions which call misc_register and don't check for an error return, I
  would like to submit my patch to drivers/parisc/kernel/perf.c

  This patch simply causes the function to printk() an error and return the
  error code from misc_register() if it fails. I hope this is the right
  thing to do. I moved it slightly earlier in the function so I wouldn't
  have to worry about undoing the side effects of perf_patch_images().

arch/parisc/kernel/perf.c

@@ -500,6 +500,8 @@ static struct miscdevice perf_dev = {
  */
 static int __init perf_init(void)
 {
+	int retval;
+
 	/* Determine correct processor interface to use */
 	bitmask_array = perf_bitmasks;
 
@@ -518,11 +520,17 @@ static int __init perf_init(void)
 		return -ENODEV;
 	}
 
+	retval = misc_register(&perf_dev);
+	if (retval < 0) {
+		printk(KERN_ERR "Performance monitoring counters: "
+			"cannot register misc device.\n");
+		return retval;
+	}
+
 	/* Patch the images to match the system */
     	perf_patch_images();
 
 	spin_lock_init(&perf_lock);
-	misc_register(&perf_dev);
 
 	/* TODO: this only lets us access the first cpu.. what to do for SMP? */
 	cpu_device = cpu_data[0].dev;