mwifiex: correct packet length for packets from SDIO interface

commit d03b4aa77e1187b77dfe37d14a923547f00baa66 upstream.

While receiving a packet on SDIO interface, we allocate skb with
size multiple of SDIO block size. We need to resize this skb
after RX using packet length from RX header.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index 4be8ccc..daf55ba 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -938,7 +938,10 @@
 				    struct sk_buff *skb, u32 upld_typ)
 {
 	u8 *cmd_buf;
+	__le16 *curr_ptr = (__le16 *)skb->data;
+	u16 pkt_len = le16_to_cpu(*curr_ptr);
 
+	skb_trim(skb, pkt_len);
 	skb_pull(skb, INTF_HEADER_LEN);
 
 	switch (upld_typ) {