rt2x00 : trim the skb after having the l2pad removed.

Otherwise we end up truncating the skb before removing the l2pad
thus we might have the truncated part become garbage while getting
it back in remove_l2pad.
For the same issue: remove the skb_trim from the rt2800 fill_rxdone
(it is done after l2pad removal in rt2x00lib_rxdone).

Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <ivdoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 3 insertions, 5 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index dfc886fcb44d..6fcb2bb840b2 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -927,7 +927,6 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry,
          * Remove TXWI descriptor from start of buffer.
          */
         skb_pull(entry->skb, RXWI_DESC_SIZE);
-        skb_trim(entry->skb, rxdesc->size);
 }
 
 /*
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index af85d18cdbe7..1db8667a6ff1 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -663,7 +663,6 @@ static void rt2800usb_fill_rxdone(struct queue_entry *entry,
          * Remove RXWI descriptor from start of buffer.
          */
         skb_pull(entry->skb, skbdesc->desc_len);
-        skb_trim(entry->skb, rxdesc->size);
 }
 
 /*
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 06c43ca39bf8..cc6bcc5a20c7 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -385,9 +385,6 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
         memset(&rxdesc, 0, sizeof(rxdesc));
         rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
 
-        /* Trim buffer to correct size */
-        skb_trim(entry->skb, rxdesc.size);
-
         /*
          * The data behind the ieee80211 header must be
          * aligned on a 4 byte boundary.
@@ -409,6 +406,9 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
         else
                 rt2x00queue_align_payload(entry->skb, header_length);
 
+        /* Trim buffer to correct size */
+        skb_trim(entry->skb, rxdesc.size);
+
         /*
          * Check if the frame was received using HT. In that case,
          * the rate is the MCS index and should be passed to mac80211