libertas: make if_sdio align packets

Incoming packets have to be aligned or the IP stack becomes upset.
Make sure to shift them two bytes to achieve this.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index a8e17076e7de..b24425f74883 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -182,12 +182,14 @@ static int if_sdio_handle_data(struct if_sdio_card *card,
                 goto out;
         }
 
-        skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
+        skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
         if (!skb) {
                 ret = -ENOMEM;
                 goto out;
         }
 
+        skb_reserve(skb, NET_IP_ALIGN);
+
         data = skb_put(skb, size);
 
         memcpy(data, buffer, size);