wireless: upcase alpha2 values in queue_regulatory_request

This provides a little more flexibility for human users, and it allows
us to use isalpha rather than the custom is_alpha_upper.
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/wireless/reg.c

@@ -36,6 +36,7 @@
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/random.h>
+#include <linux/ctype.h>
 #include <linux/nl80211.h>
 #include <linux/platform_device.h>
 #include <net/cfg80211.h>
@@ -181,14 +182,6 @@ static bool is_alpha2_set(const char *alpha2)
 	return false;
 }
 
-static bool is_alpha_upper(char letter)
-{
-	/* ASCII A - Z */
-	if (letter >= 65 && letter <= 90)
-		return true;
-	return false;
-}
-
 static bool is_unknown_alpha2(const char *alpha2)
 {
 	if (!alpha2)
@@ -220,7 +213,7 @@ static bool is_an_alpha2(const char *alpha2)
 {
 	if (!alpha2)
 		return false;
-	if (is_alpha_upper(alpha2[0]) && is_alpha_upper(alpha2[1]))
+	if (isalpha(alpha2[0]) && isalpha(alpha2[1]))
 		return true;
 	return false;
 }
@@ -1399,6 +1392,11 @@ static DECLARE_WORK(reg_work, reg_todo);
 
 static void queue_regulatory_request(struct regulatory_request *request)
 {
+	if (isalpha(request->alpha2[0]))
+		request->alpha2[0] = toupper(request->alpha2[0]);
+	if (isalpha(request->alpha2[1]))
+		request->alpha2[1] = toupper(request->alpha2[1]);
+
 	spin_lock(&reg_requests_lock);
 	list_add_tail(&request->list, &reg_requests_list);
 	spin_unlock(&reg_requests_lock);