wifi: iwlwifi: fw: increase fw_version string size

In reality 64 bytes are enough to hold fw version string,
but some compilers can complain (with W=1) that output may be
truncated when building this string with snprintf.
Increase the size to avoid this sort of warnings and state
explicitely that we want the size to be trancated to 32 bytes.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Tested-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20231012153950.f4465b4b4e2b.Idced2e8d63c492872edcde1a3ce2cdd6cc0f8eb7@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/dvm/main.c

@@ -1464,7 +1464,7 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 
 	snprintf(priv->hw->wiphy->fw_version,
 		 sizeof(priv->hw->wiphy->fw_version),
-		 "%s", fw->fw_version);
+		 "%.31s", fw->fw_version);
 
 	priv->new_scan_threshold_behaviour =
 		!!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);

drivers/net/wireless/intel/iwlwifi/fw/img.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2005-2014, 2018-2021 Intel Corporation
+ * Copyright (C) 2005-2014, 2018-2023 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016 Intel Deutschland GmbH
  */
@@ -198,7 +198,7 @@ struct iwl_dump_exclude {
 struct iwl_fw {
 	u32 ucode_ver;
 
-	char fw_version[64];
+	char fw_version[128];
 
 	/* ucode images */
 	struct fw_img img[IWL_UCODE_TYPE_MAX];

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

@@ -1304,7 +1304,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 
 	snprintf(mvm->hw->wiphy->fw_version,
 		 sizeof(mvm->hw->wiphy->fw_version),
-		 "%s", fw->fw_version);
+		 "%.31s", fw->fw_version);
 
 	trans_cfg.fw_reset_handshake = fw_has_capa(&mvm->fw->ucode_capa,
 						   IWL_UCODE_TLV_CAPA_FW_RESET_HANDSHAKE);