Index: linux-2.6/drivers/net/wireless/ath/wil6210/debugfs.c
===================================================================
--- linux-2.6.orig/drivers/net/wireless/ath/wil6210/debugfs.c
+++ linux-2.6/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -145,7 +145,7 @@ static void wil_print_ring(struct seq_fi
 				   le16_to_cpu(hdr.type), hdr.flags);
 			if (len <= MAX_MBOXITEM_SIZE) {
 				int n = 0;
-				unsigned char printbuf[16 * 3 + 2];
+				char printbuf[16 * 3 + 2];
 				unsigned char databuf[MAX_MBOXITEM_SIZE];
 				void __iomem *src = wmi_buffer(wil, d.addr) +
 					sizeof(struct wil6210_mbox_hdr);