rt2x00: Split out parts of the rt2800_txdone function for easier reuse

Signed-off-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, 53 insertions, 47 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index daa32ae4286..19534f272d7 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -630,15 +630,63 @@ static bool rt2800_txdone_entry_check(struct queue_entry *entry, u32 reg)
         return true;
 }
 
+void rt2800_txdone_entry(struct queue_entry *entry, u32 status)
+{
+        struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+        struct txdone_entry_desc txdesc;
+        u32 word;
+        u16 mcs, real_mcs;
+        __le32 *txwi;
+
+        /*
+         * Obtain the status about this packet.
+         */
+        txdesc.flags = 0;
+        txwi = rt2800_drv_get_txwi(entry);
+        rt2x00_desc_read(txwi, 0, &word);
+        mcs = rt2x00_get_field32(word, TXWI_W0_MCS);
+        real_mcs = rt2x00_get_field32(status, TX_STA_FIFO_MCS);
+
+        /*
+         * Ralink has a retry mechanism using a global fallback
+         * table. We setup this fallback table to try the immediate
+         * lower rate for all rates. In the TX_STA_FIFO, the MCS field
+         * always contains the MCS used for the last transmission, be
+         * it successful or not.
+         */
+        if (rt2x00_get_field32(status, TX_STA_FIFO_TX_SUCCESS)) {
+                /*
+                 * Transmission succeeded. The number of retries is
+                 * mcs - real_mcs
+                 */
+                __set_bit(TXDONE_SUCCESS, &txdesc.flags);
+                txdesc.retry = ((mcs > real_mcs) ? mcs - real_mcs : 0);
+        } else {
+                /*
+                 * Transmission failed. The number of retries is
+                 * always 7 in this case (for a total number of 8
+                 * frames sent).
+                 */
+                __set_bit(TXDONE_FAILURE, &txdesc.flags);
+                txdesc.retry = rt2x00dev->long_retry;
+        }
+
+        /*
+         * the frame was retried at least once
+         * -> hw used fallback rates
+         */
+        if (txdesc.retry)
+                __set_bit(TXDONE_FALLBACK, &txdesc.flags);
+
+        rt2x00lib_txdone(entry, &txdesc);
+}
+EXPORT_SYMBOL_GPL(rt2800_txdone_entry);
+
 void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
 {
         struct data_queue *queue;
         struct queue_entry *entry;
-        __le32 *txwi;
-        struct txdone_entry_desc txdesc;
-        u32 word;
         u32 reg;
-        u16 mcs, real_mcs;
         u8 pid;
         int i;
 
@@ -673,7 +721,6 @@ void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
                  * order. We first check that the queue is not empty.
                  */
                 entry = NULL;
-                txwi = NULL;
                 while (!rt2x00queue_empty(queue)) {
                         entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
                         if (rt2800_txdone_entry_check(entry, reg))
@@ -683,48 +730,7 @@ void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
                 if (!entry || rt2x00queue_empty(queue))
                         break;
 
-
-                /*
-                 * Obtain the status about this packet.
-                 */
-                txdesc.flags = 0;
-                txwi = rt2800_drv_get_txwi(entry);
-                rt2x00_desc_read(txwi, 0, &word);
-                mcs = rt2x00_get_field32(word, TXWI_W0_MCS);
-                real_mcs = rt2x00_get_field32(reg, TX_STA_FIFO_MCS);
-
-                /*
-                 * Ralink has a retry mechanism using a global fallback
-                 * table. We setup this fallback table to try the immediate
-                 * lower rate for all rates. In the TX_STA_FIFO, the MCS field
-                 * always contains the MCS used for the last transmission, be
-                 * it successful or not.
-                 */
-                if (rt2x00_get_field32(reg, TX_STA_FIFO_TX_SUCCESS)) {
-                        /*
-                         * Transmission succeeded. The number of retries is
-                         * mcs - real_mcs
-                         */
-                        __set_bit(TXDONE_SUCCESS, &txdesc.flags);
-                        txdesc.retry = ((mcs > real_mcs) ? mcs - real_mcs : 0);
-                } else {
-                        /*
-                         * Transmission failed. The number of retries is
-                         * always 7 in this case (for a total number of 8
-                         * frames sent).
-                         */
-                        __set_bit(TXDONE_FAILURE, &txdesc.flags);
-                        txdesc.retry = rt2x00dev->long_retry;
-                }
-
-                /*
-                 * the frame was retried at least once
-                 * -> hw used fallback rates
-                 */
-                if (txdesc.retry)
-                        __set_bit(TXDONE_FALLBACK, &txdesc.flags);
-
-                rt2x00lib_txdone(entry, &txdesc);
+                rt2800_txdone_entry(entry, reg);
         }
 }
 EXPORT_SYMBOL_GPL(rt2800_txdone);