rt2x00: rt2800pci: don't use TXWI_DESC_SIZE directly

Different chipsets may use different TXWI descriptor
size. Instead of using a hardcoded value, use the
'queue->winfo_size' which holds the correct value for
a given device.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 7c74782..e664918 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -637,6 +637,7 @@ static void rt2800pci_write_tx_desc(struct queue_entry *entry,
        struct queue_entry_priv_mmio *entry_priv = entry->priv_data;
        __le32 *txd = entry_priv->desc;
        u32 word;
+       const unsigned int txwi_size = entry->queue->winfo_size;
 
        /*
         * The buffers pointed by SD_PTR0/SD_LEN0 and SD_PTR1/SD_LEN1
@@ -659,14 +660,14 @@ static void rt2800pci_write_tx_desc(struct queue_entry *entry,
                           !test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
        rt2x00_set_field32(&word, TXD_W1_BURST,
                           test_bit(ENTRY_TXD_BURST, &txdesc->flags));
-       rt2x00_set_field32(&word, TXD_W1_SD_LEN0, TXWI_DESC_SIZE);
+       rt2x00_set_field32(&word, TXD_W1_SD_LEN0, txwi_size);
        rt2x00_set_field32(&word, TXD_W1_LAST_SEC0, 0);
        rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 0);
        rt2x00_desc_write(txd, 1, word);
 
        word = 0;
        rt2x00_set_field32(&word, TXD_W2_SD_PTR1,
-                          skbdesc->skb_dma + TXWI_DESC_SIZE);
+                          skbdesc->skb_dma + txwi_size);
        rt2x00_desc_write(txd, 2, word);
 
        word = 0;