rt2x00: Decrease alignment headroom
We only need 4 bytes of headroom for alignment
purposes in the RX frame. It was previously higher
for optimization purposes which are no longer
possible due to DMA mappings.
v2: Fix patch error
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 8e86611..3ddce53 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -45,10 +45,11 @@
frame_size = entry->queue->data_size + entry->queue->desc_size;
/*
- * Reserve a few bytes extra headroom to allow drivers some moving
- * space (e.g. for alignment), while keeping the skb aligned.
+ * The payload should be aligned to a 4-byte boundary,
+ * this means we need at least 3 bytes for moving the frame
+ * into the correct offset.
*/
- reserved_size = 8;
+ reserved_size = 4;
/*
* Allocate skbuffer.