iwlwifi: correctly size command string arrays

The command string array is assumed to be indexable by a full u8, so it
must have 256 entries (0-255), not just 255. A recent firmware change
(apparently) started using the command 0xff for a notification to the
host, causing the driver to crash in debug message/tracing code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

drivers/net/wireless/iwlwifi/dvm/agn.h

@@ -473,7 +473,7 @@ do {									\
 } while (0)
 #endif				/* CONFIG_IWLWIFI_DEBUG */
 
-extern const char *const iwl_dvm_cmd_strings[REPLY_MAX];
+extern const char *const iwl_dvm_cmd_strings[REPLY_MAX + 1];
 
 static inline const char *iwl_dvm_get_cmd_string(u8 cmd)
 {

drivers/net/wireless/iwlwifi/dvm/rx.c

@@ -39,7 +39,7 @@
 
 #define IWL_CMD_ENTRY(x) [x] = #x
 
-const char *const iwl_dvm_cmd_strings[REPLY_MAX] = {
+const char *const iwl_dvm_cmd_strings[REPLY_MAX + 1] = {
 	IWL_CMD_ENTRY(REPLY_ALIVE),
 	IWL_CMD_ENTRY(REPLY_ERROR),
 	IWL_CMD_ENTRY(REPLY_ECHO),

drivers/net/wireless/iwlwifi/mvm/ops.c

@@ -268,7 +268,7 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
 #undef RX_HANDLER_GRP
 #define CMD(x) [x] = #x
 
-static const char *const iwl_mvm_cmd_strings[REPLY_MAX] = {
+static const char *const iwl_mvm_cmd_strings[REPLY_MAX + 1] = {
 	CMD(MVM_ALIVE),
 	CMD(REPLY_ERROR),
 	CMD(INIT_COMPLETE_NOTIF),