[PATCH 3.10 079/173] mwifiex: correct packet length for packets from SDIO interface

Greg Kroah-Hartman
2013-12-02T20:58:40Z

From: Avinash Patil <patila@marvell.com>

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>

---
drivers/net/wireless/mwifiex/sdio.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -930,7 +930,10 @@ static int mwifiex_decode_rx_packet(stru
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) {