b43: Remove PIO support

Remove b43 PIO support.
DMA works well on all supported devices. There's no reason to use PIO.
Additionally, new devices don't support PIO in hardware anymore.
b43 PIO support is dead and unused code.

After applying this patch please do
git rm drivers/net/wireless/b43/pio.h
git rm drivers/net/wireless/b43/pio.c
to remove the main PIO support code.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 13 deletions

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 3d3127685881..419aca1fc4fe 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -30,7 +30,7 @@
 #include "xmit.h"
 #include "phy.h"
 #include "dma.h"
-#include "pio.h"
+
 
 /* Extract the bitrate out of a CCK PLCP header. */
 static u8 b43_plcp_get_bitrate_cck(struct b43_plcp_hdr6 *plcp)
@@ -604,10 +604,7 @@ void b43_handle_txstatus(struct b43_wldev *dev,
                         dev->wl->ieee_stats.dot11RTSSuccessCount++;
         }
 
-        if (b43_using_pio(dev))
-                b43_pio_handle_txstatus(dev, status);
-        else
-                b43_dma_handle_txstatus(dev, status);
+        b43_dma_handle_txstatus(dev, status);
 }
 
 /* Handle TX status report as received through DMA/PIO queues */
@@ -636,19 +633,13 @@ void b43_handle_hwtxstatus(struct b43_wldev *dev,
 /* Stop any TX operation on the device (suspend the hardware queues) */
 void b43_tx_suspend(struct b43_wldev *dev)
 {
-        if (b43_using_pio(dev))
-                b43_pio_freeze_txqueues(dev);
-        else
-                b43_dma_tx_suspend(dev);
+        b43_dma_tx_suspend(dev);
 }
 
 /* Resume any TX operation on the device (resume the hardware queues) */
 void b43_tx_resume(struct b43_wldev *dev)
 {
-        if (b43_using_pio(dev))
-                b43_pio_thaw_txqueues(dev);
-        else
-                b43_dma_tx_resume(dev);
+        b43_dma_tx_resume(dev);
 }
 
 #if 0