package/madwifi/patches-testing/126-rxerr_frames.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -6451,9 +6451,6 @@
   4                 rs = &bf->bf_dsstatus.ds_rxstat;
   5
   6                 len = rs->rs_datalen;
   7 -               /* DMA sync. dies spectacularly if len == 0 */
   8 -               if (len == 0)
   9 -                       goto rx_next;
  10                 if (rs->rs_more) {
  11                         /* Frame spans multiple descriptors; this
  12                          * cannot happen yet as we don't support
  13 @@ -6513,8 +6510,12 @@
  14                  * setup again to receive another frame.
  15                  * NB: Meta-data (rs, noise, tsf) in the ath_buf is still
  16                  * used. */
  17 -               bus_dma_sync_single(sc->sc_bdev,
  18 -                       bf->bf_skbaddr, len, BUS_DMA_FROMDEVICE);
  19 +
  20 +               /* DMA sync. dies spectacularly if len == 0 */
  21 +               if (len != 0) {
  22 +                       bus_dma_sync_single(sc->sc_bdev,
  23 +                               bf->bf_skbaddr, len, BUS_DMA_FROMDEVICE);
  24 +               }
  25                 skb = ath_rxbuf_take_skb(sc, bf);
  26
  27                 sc->sc_stats.ast_ant_rx[rs->rs_antenna]++;