From a9f853ddd352954815a023c4811629ed117df2f8 Mon Sep 17 00:00:00 2001 From: Gertjan van Wingerde Date: Sat, 7 Jun 2008 16:57:09 +0200 Subject: [PATCH] rt2x00: Rework alignment check. Rework the alignment check in rt2x00dev.c to be independent of any potential alignment measures that may be taken before. Just check whether the payload is aligned based on the pointer addresses. Note: This is preparatory for the dynamically mapped skb buffers for the PCI drivers, as these need 4-byte alignment instead of the currently enforced offset by 2 bytes. Signed-off-by: Gertjan van Wingerde Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00dev.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index ce1f7bbd3d7a..9ea677320daa 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -565,13 +565,9 @@ void rt2x00lib_rxdone(struct queue_entry *entry, /* * The data behind the ieee80211 header must be - * aligned on a 4 byte boundary. We already reserved - * 2 bytes for header_size % 4 == 2 optimization. - * To determine the number of bytes which the data - * should be moved to the left, we must add these - * 2 bytes to the header_size. + * aligned on a 4 byte boundary. */ - align = (header_size + 2) % 4; + align = ((unsigned long)(entry->skb->data + header_size)) & 3; if (align) { skb_push(entry->skb, align); -- 2.30.2