staging: lustre: llite: Compare of unsigned value against 0 is always true

Comparison of unsigned value against 0 is always true.
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5200
Reviewed-on: http://review.whamcloud.com/11217Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/lproc_llite.c

@@ -846,7 +846,7 @@ static ssize_t unstable_stats_store(struct kobject *kobj,
 
 	if (!count)
 		return 0;
-	if (count < 0 || count >= sizeof(kernbuf))
+	if (count >= sizeof(kernbuf))
 		return -EINVAL;
 
 	if (copy_from_user(kernbuf, buffer, count))