diff -urNp 2.4.19rc3ac1/arch/i386/kernel/apm.c 2.4.19rc3ac2/arch/i386/kernel/apm.c
--- 2.4.19rc3ac1/arch/i386/kernel/apm.c	Tue Jul 23 23:03:28 2002
+++ 2.4.19rc3ac2/arch/i386/kernel/apm.c	Tue Jul 23 23:10:55 2002
@@ -1405,7 +1405,7 @@ static ssize_t do_read(struct file *fp, 
 	as = fp->private_data;
 	if (check_apm_user(as, "read"))
 		return -EIO;
-	if (count < sizeof(apm_event_t))
+	if ((int)count < sizeof(apm_event_t))
 		return -EINVAL;
 	if ((queue_empty(as)) && (fp->f_flags & O_NONBLOCK))
 		return -EAGAIN;