net: usb: Merge cpu_to_le32s + memcpy to put_unaligned_le32

Merge the combo uses of cpu_to_le32s and memcpy.
Use put_unaligned_le32 instead.
This simplifies the code.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/asix_common.c

@@ -221,6 +221,7 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 	int tailroom = skb_tailroom(skb);
 	u32 packet_len;
 	u32 padbytes = 0xffff0000;
+	void *ptr;
 
 	padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
 
@@ -256,13 +257,11 @@ struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 	}
 
 	packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
-	skb_push(skb, 4);
-	cpu_to_le32s(&packet_len);
-	skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
+	ptr = skb_push(skb, 4);
+	put_unaligned_le32(packet_len, ptr);
 
 	if (padlen) {
-		cpu_to_le32s(&padbytes);
-		memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
+		put_unaligned_le32(padbytes, skb_tail_pointer(skb));
 		skb_put(skb, sizeof(padbytes));
 	}
 

drivers/net/usb/ax88179_178a.c

@@ -1421,6 +1421,7 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 	int frame_size = dev->maxpacket;
 	int mss = skb_shinfo(skb)->gso_size;
 	int headroom;
+	void *ptr;
 
 	tx_hdr1 = skb->len;
 	tx_hdr2 = mss;
@@ -1435,13 +1436,9 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 		return NULL;
 	}
 
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_hdr2);
-	skb_copy_to_linear_data(skb, &tx_hdr2, 4);
-
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_hdr1);
-	skb_copy_to_linear_data(skb, &tx_hdr1, 4);
+	ptr = skb_push(skb, 8);
+	put_unaligned_le32(tx_hdr1, ptr);
+	put_unaligned_le32(tx_hdr2, ptr + 4);
 
 	return skb;
 }

drivers/net/usb/lan78xx.c

@@ -2729,6 +2729,7 @@ static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
 				       struct sk_buff *skb, gfp_t flags)
 {
 	u32 tx_cmd_a, tx_cmd_b;
+	void *ptr;
 
 	if (skb_cow_head(skb, TX_OVERHEAD)) {
 		dev_kfree_skb_any(skb);
@@ -2757,13 +2758,9 @@ static struct sk_buff *lan78xx_tx_prep(struct lan78xx_net *dev,
 		tx_cmd_b |= skb_vlan_tag_get(skb) & TX_CMD_B_VTAG_MASK_;
 	}
 
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_cmd_b);
-	memcpy(skb->data, &tx_cmd_b, 4);
-
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_cmd_a);
-	memcpy(skb->data, &tx_cmd_a, 4);
+	ptr = skb_push(skb, 8);
+	put_unaligned_le32(tx_cmd_a, ptr);
+	put_unaligned_le32(tx_cmd_b, ptr + 4);
 
 	return skb;
 }

drivers/net/usb/smsc75xx.c

@@ -2255,6 +2255,7 @@ static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
 					 struct sk_buff *skb, gfp_t flags)
 {
 	u32 tx_cmd_a, tx_cmd_b;
+	void *ptr;
 
 	if (skb_cow_head(skb, SMSC75XX_TX_OVERHEAD)) {
 		dev_kfree_skb_any(skb);
@@ -2275,13 +2276,9 @@ static struct sk_buff *smsc75xx_tx_fixup(struct usbnet *dev,
 		tx_cmd_b = 0;
 	}
 
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_cmd_b);
-	memcpy(skb->data, &tx_cmd_b, 4);
-
-	skb_push(skb, 4);
-	cpu_to_le32s(&tx_cmd_a);
-	memcpy(skb->data, &tx_cmd_a, 4);
+	ptr = skb_push(skb, 8);
+	put_unaligned_le32(tx_cmd_a, ptr);
+	put_unaligned_le32(tx_cmd_b, ptr + 4);
 
 	return skb;
 }

drivers/net/usb/sr9800.c

@@ -115,6 +115,7 @@ static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 	u32 padbytes = 0xffff0000;
 	u32 packet_len;
 	int padlen;
+	void *ptr;
 
 	padlen = ((skb->len + 4) % (dev->maxpacket - 1)) ? 0 : 4;
 
@@ -133,14 +134,12 @@ static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 			return NULL;
 	}
 
-	skb_push(skb, 4);
+	ptr = skb_push(skb, 4);
 	packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
-	cpu_to_le32s(&packet_len);
-	skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
+	put_unaligned_le32(packet_len, ptr);
 
 	if (padlen) {
-		cpu_to_le32s(&padbytes);
-		memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
+		put_unaligned_le32(padbytes, skb_tail_pointer(skb));
 		skb_put(skb, sizeof(padbytes));
 	}