ath9k: Initialize and configure tx status for EDMA

Also add a function to clean up tx status ring.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index f67be52591d5..2d3e42ad3b05 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -114,8 +114,10 @@ enum buffer_type {
 #define bf_isretried(bf)        (bf->bf_state.bf_type & BUF_RETRY)
 #define bf_isxretried(bf)       (bf->bf_state.bf_type & BUF_XRETRY)
 
+#define ATH_TXSTATUS_RING_SIZE 64
+
 struct ath_descdma {
-        struct ath_desc *dd_desc;
+        void *dd_desc;
         dma_addr_t dd_desc_paddr;
         u32 dd_desc_len;
         struct ath_buf *dd_bufptr;
@@ -515,6 +517,8 @@ struct ath_softc {
         struct ath_beacon_config cur_beacon_conf;
         struct delayed_work tx_complete_work;
         struct ath_btcoex btcoex;
+
+        struct ath_descdma txsdma;
 };
 
 struct ath_wiphy {