[ARM] 4913/1: [AT91] PMC_MDIV definitions

[linux-2.6-omap-h63xx.git] / block / Kconfig

diff --git a/block/Kconfig b/block/Kconfig
index da12f2649cced4266daaf85ca2ba42a95707013e..9bda7bc80307f2a69c06a0c46819c0a10d5321e2 100644 (file)
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -49,13 +49,24 @@ config LSF
 
          If unsure, say Y.
 
+config BLK_DEV_BSG
+       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.
+
+       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).
+
 endif # BLOCK
 
-config BLK_DEV_BSG
-       bool "Block layer SG support"
+config BLOCK_COMPAT
+       bool
+       depends on BLOCK && COMPAT
        default y
-       ---help---
-       Saying Y here will enable generic SG (SCSI generic) v3
-       support for any block device.
 
 source block/Kconfig.iosched