rt2x00: Pad beacon to multiple of 32 bits.

Pad beacon to a multiple of 32 bits in preparation for the change
from memcpy_toio() to __iowrite32_copy() in register_multiwrite().

Signed-off-by: Wolfgang Kufner <wolfgang.kufner@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 9405b100a75a..8de44dd401e0 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1961,6 +1961,7 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
         struct queue_entry_priv_pci *entry_priv = entry->priv_data;
         unsigned int beacon_base;
+        unsigned int padding_len;
         u32 reg;
 
         /*
@@ -1982,13 +1983,16 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
         rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
 
         /*
-         * Write entire beacon with descriptor to register.
+         * Write entire beacon with descriptor and padding to register.
          */
+        padding_len = roundup(entry->skb->len, 4) - entry->skb->len;
+        skb_pad(entry->skb, padding_len);
         beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
         rt2x00pci_register_multiwrite(rt2x00dev, beacon_base,
                                       entry_priv->desc, TXINFO_SIZE);
         rt2x00pci_register_multiwrite(rt2x00dev, beacon_base + TXINFO_SIZE,
-                                      entry->skb->data, entry->skb->len);
+                                      entry->skb->data,
+                                      entry->skb->len + padding_len);
 
         /*
          * Enable beaconing again.