X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=block%2FKconfig;h=9bda7bc80307f2a69c06a0c46819c0a10d5321e2;hb=75529219373e53042fc46c86d991125e616f42dd;hp=da12f2649cced4266daaf85ca2ba42a95707013e;hpb=3d6392cfbd7dc11f23058e3493683afab4ac13a3;p=linux-2.6

diff --git a/block/Kconfig b/block/Kconfig
index da12f2649c..9bda7bc803 100644
--- 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