[PATCH] bcm43xx: Partially fix PIO code. Add Kconfig option for PIO or DMA mode (or both).

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

1 files changed, 28 insertions, 1 deletions

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx.h b/drivers/net/wireless/bcm43xx/bcm43xx.h
index 981d563f5738..3d8ac7e952cc 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx.h
+++ b/drivers/net/wireless/bcm43xx/bcm43xx.h
@@ -639,7 +639,7 @@ struct bcm43xx_private {
         u32 initialized:1,              /* init_board() succeed */
             was_initialized:1,          /* for PCI suspend/resume. */
             shutting_down:1,            /* free_board() in progress */
-            pio_mode:1,                 /* PIO (if true), or DMA (if false) used. */
+            __using_pio:1,              /* Internal, use bcm43xx_using_pio(). */
             bad_frames_preempt:1,       /* Use "Bad Frames Preemption" (default off) */
             reg124_set_0x4:1,           /* Some variable to keep track of IRQ stuff. */
             powersaving:1,              /* TRUE if we are in PowerSaving mode. FALSE otherwise. */
@@ -749,6 +749,33 @@ struct bcm43xx_private * bcm43xx_priv(struct net_device *dev)
         return ieee80211softmac_priv(dev);
 }
 
+
+/* Helper function, which returns a boolean.
+ * TRUE, if PIO is used; FALSE, if DMA is used.
+ */
+#if defined(CONFIG_BCM43XX_DMA) && defined(CONFIG_BCM43XX_PIO)
+static inline
+int bcm43xx_using_pio(struct bcm43xx_private *bcm)
+{
+        return bcm->__using_pio;
+}
+#elif defined(CONFIG_BCM43XX_DMA)
+static inline
+int bcm43xx_using_pio(struct bcm43xx_private *bcm)
+{
+        return 0;
+}
+#elif defined(CONFIG_BCM43XX_PIO)
+static inline
+int bcm43xx_using_pio(struct bcm43xx_private *bcm)
+{
+        return 1;
+}
+#else
+# error "Using neither DMA nor PIO? Confused..."
+#endif
+
+
 static inline
 int bcm43xx_num_80211_cores(struct bcm43xx_private *bcm)
 {