[PATCH] drivers/macintosh/apm_emu.c: audit misc_register() return value

From: Paolo Teti <paolo.teti@gmail.com>

Signed-off-by: Paolo Teti <paolo.teti@gmail.com>

Index: linux-kj/drivers/macintosh/apm_emu.c
===================================================================
--- linux-kj.orig/drivers/macintosh/apm_emu.c	2005-12-05 13:18:05.000000000 +0300
+++ linux-kj/drivers/macintosh/apm_emu.c	2005-12-05 13:19:24.000000000 +0300
@@ -520,6 +520,7 @@ static struct miscdevice apm_device = {
 static int __init apm_emu_init(void)
 {
 	struct proc_dir_entry *apm_proc;
+	int rc;
 
 	if (sys_ctrler != SYS_CTRLER_PMU) {
 		printk(KERN_INFO "apm_emu: Requires a machine with a PMU.\n");
@@ -530,7 +531,12 @@ static int __init apm_emu_init(void)
 	if (apm_proc)
 		apm_proc->owner = THIS_MODULE;
 
-	misc_register(&apm_device);
+	rc = misc_register(&apm_device);
+	if (rc < 0) {
+		remove_proc_entry("apm", NULL);
+		printk(KERN_ERR "apm_emu: Failed to register APM Emulation.\n");
+		return rc;
+	}
 
 	pmu_register_sleep_notifier(&apm_sleep_notifier);