b43: dma: cache translation (routing bits)

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 02eca18..3c8200c 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -567,6 +567,8 @@
 	struct b43_dmaring *tx_ring_mcast; /* Multicast */
 
 	struct b43_dmaring *rx_ring;
+
+	u32 translation; /* Routing bits */
 };
 
 struct b43_pio_txqueue;
diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 10cfba3..47d44bc 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -80,7 +80,7 @@
 	addr = (u32) (dmaaddr & ~SSB_DMA_TRANSLATION_MASK);
 	addrext = (u32) (dmaaddr & SSB_DMA_TRANSLATION_MASK)
 	    >> SSB_DMA_TRANSLATION_SHIFT;
-	addr |= ssb_dma_translation(ring->dev->sdev);
+	addr |= ring->dev->dma.translation;
 	ctl = bufsize & B43_DMA32_DCTL_BYTECNT;
 	if (slot == ring->nr_slots - 1)
 		ctl |= B43_DMA32_DCTL_DTABLEEND;
@@ -174,7 +174,7 @@
 	addrhi = (((u64) dmaaddr >> 32) & ~SSB_DMA_TRANSLATION_MASK);
 	addrext = (((u64) dmaaddr >> 32) & SSB_DMA_TRANSLATION_MASK)
 	    >> SSB_DMA_TRANSLATION_SHIFT;
-	addrhi |= (ssb_dma_translation(ring->dev->sdev) << 1);
+	addrhi |= (ring->dev->dma.translation << 1);
 	if (slot == ring->nr_slots - 1)
 		ctl0 |= B43_DMA64_DCTL0_DTABLEEND;
 	if (start)
@@ -658,7 +658,7 @@
 	int err = 0;
 	u32 value;
 	u32 addrext;
-	u32 trans = ssb_dma_translation(ring->dev->sdev);
+	u32 trans = ring->dev->dma.translation;
 
 	if (ring->tx) {
 		if (ring->type == B43_DMA_64BIT) {
@@ -1055,6 +1055,7 @@
 	err = b43_dma_set_mask(dev, dmamask);
 	if (err)
 		return err;
+	dma->translation = ssb_dma_translation(dev->sdev);
 
 	err = -ENOMEM;
 	/* setup TX DMA channels. */