From: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Date: Sun, 4 Aug 2019 02:48:32 +0000 (+0530)
Subject: staging: rtl8192e: Make use kmemdup
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=36d042bd6865ada4fc5b14e2cb5fd325eeb248db;p=openwrt%2Fstaging%2Fblogic.git

staging: rtl8192e: Make use kmemdup

As kmemdup API does kmalloc + memcpy . We can make use of it instead of
calling kmalloc and memcpy independetly.

Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Link: https://lore.kernel.org/r/20190804024832.GA14352@hari-Inspiron-1545
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8192e/rtllib_softmac.c b/drivers/staging/rtl8192e/rtllib_softmac.c
index e29e8d6f4611..f2f7529e7c80 100644
--- a/drivers/staging/rtl8192e/rtllib_softmac.c
+++ b/drivers/staging/rtl8192e/rtllib_softmac.c
@@ -1382,15 +1382,10 @@ rtllib_association_req(struct rtllib_network *beacon,
 	ieee->assocreq_ies = NULL;
 	ies = &(hdr->info_element[0].id);
 	ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
-	ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
-	if (ieee->assocreq_ies)
-		memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
-	else {
-		netdev_info(ieee->dev,
-			    "%s()Warning: can't alloc memory for assocreq_ies\n",
-			    __func__);
+	ieee->assocreq_ies = kmemdup(ies, ieee->assocreq_ies_len, GFP_ATOMIC);
+	if (!ieee->assocreq_ies)
 		ieee->assocreq_ies_len = 0;
-	}
+
 	return skb;
 }
 
@@ -2259,17 +2254,12 @@ rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
 			ieee->assocresp_ies = NULL;
 			ies = &(assoc_resp->info_element[0].id);
 			ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
-			ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
+			ieee->assocresp_ies = kmemdup(ies,
+						      ieee->assocresp_ies_len,
 						      GFP_ATOMIC);
-			if (ieee->assocresp_ies)
-				memcpy(ieee->assocresp_ies, ies,
-				       ieee->assocresp_ies_len);
-			else {
-				netdev_info(ieee->dev,
-					    "%s()Warning: can't alloc memory for assocresp_ies\n",
-					    __func__);
+			if (!ieee->assocresp_ies)
 				ieee->assocresp_ies_len = 0;
-			}
+
 			rtllib_associate_complete(ieee);
 		} else {
 			/* aid could not been allocated */