linux-kernel - [PATCH] iwlwifi: mvm: Use kmemdup() instead of kzalloc and memcpy

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Date:   Sun, 3 Oct 2021 16:31:44 +0800
From:   Kai Song <songkai01@...pur.com>
To:     <luciano.coelho@...el.com>, <kvalo@...eaurora.org>
CC:     <linux-wireless@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Kai Song <songkai01@...pur.com>
Subject: [PATCH] iwlwifi: mvm: Use kmemdup() instead of kzalloc and memcpy

fix memdup.cocci warning:
drivers/net/wireless/intel/iwlwifi/mvm/rfi.c:110:8-15: WARNING opportunity for kmemdup

Signed-off-by: Kai Song <songkai01@...pur.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/rfi.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
index 44344216a1a9..1954b4cdb90b 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
@@ -107,12 +107,10 @@ struct iwl_rfi_freq_table_resp_cmd *iwl_rfi_get_freq_table(struct iwl_mvm *mvm)
 	if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
 		return ERR_PTR(-EIO);
 
-	resp = kzalloc(resp_size, GFP_KERNEL);
+	resp = kmemdup(cmd.resp_pkt->data, resp_size, GFP_KERNEL);
 	if (!resp)
 		return ERR_PTR(-ENOMEM);
 
-	memcpy(resp, cmd.resp_pkt->data, resp_size);
-
 	iwl_free_resp(&cmd);
 	return resp;
 }
-- 
2.27.0