[POWERPC] Provide ability to setup P2P bridge registers from struct resource

[linux-2.6] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index 1d16b08e15063e97d17d3c519deecc3395e2ff3c..ca2ef4e08497f21a8f5f542031839f3e63e18b48 100644 (file)
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -52,11 +52,16 @@ config LSF
 endif # BLOCK
 
 config BLK_DEV_BSG
-       bool "Block layer SG support"
-       depends on SCSI && EXPERIMENTAL
-       default y
+       bool "Block layer SG support v4 (EXPERIMENTAL)"
+       depends on EXPERIMENTAL
        ---help---
-       Saying Y here will enable generic SG (SCSI generic) v4
-       support for any block device.
+       Saying Y here will enable generic SG (SCSI generic) v4 support
+       for any block device.
+
+       Unlike SG v3 (aka block/scsi_ioctl.c drivers/scsi/sg.c), SG v4
+       can handle complicated SCSI commands: tagged variable length cdbs
+       with bidirectional data transfers and generic request/response
+       protocols (e.g. Task Management Functions and SMP in Serial
+       Attached SCSI).
 
 source block/Kconfig.iosched