b43: fall back gracefully to PIO mode after fatal DMA errors

[pandora-kernel.git] / drivers / net / wireless / b43 / Kconfig

diff --git a/drivers/net/wireless/b43/Kconfig b/drivers/net/wireless/b43/Kconfig
index 073be56..0a00d42 100644 (file)
--- a/drivers/net/wireless/b43/Kconfig
+++ b/drivers/net/wireless/b43/Kconfig
@@ -3,7 +3,6 @@ config B43
        depends on SSB_POSSIBLE && MAC80211 && HAS_DMA
        select SSB
        select FW_LOADER
-       select SSB_BLOCKIO
        ---help---
          b43 is a driver for the Broadcom 43xx series wireless devices.
 
@@ -79,6 +78,14 @@ config B43_SDIO
 
          If unsure, say N.
 
+#Data transfers to the device via PIO. We want it as a fallback even
+# if we can do DMA.
+config B43_PIO
+       bool
+       depends on B43
+       select SSB_BLOCKIO
+       default y
+
 config B43_NPHY
        bool "Pre IEEE 802.11n support (BROKEN)"
        depends on B43 && EXPERIMENTAL && BROKEN
@@ -130,4 +137,12 @@ config B43_DEBUG
          for production use.
          Only say Y, if you are debugging a problem in the b43 driver sourcecode.
 
+config B43_FORCE_PIO
+       bool "Force usage of PIO instead of DMA"
+       depends on B43 && B43_DEBUG
+       ---help---
+         This will disable DMA and always enable PIO instead.
 
+         Say N!
+         This is only for debugging the PIO engine code. You do
+         _NOT_ want to enable this.