From: Jeff Garzik <jeff@garzik.org>
Date: Thu, 17 Apr 2008 19:55:24 +0000 (-0400)
Subject: [libata] improve Kconfig help text for new PMP, SFF options
X-Git-Tag: v2.6.26-rc1~1150^2~8
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f3360ebffae254ab99a64bf97c7b4f8380b1e114;p=linux-2.6

[libata] improve Kconfig help text for new PMP, SFF options
---

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 3eb6035b61..292aa9a0f0 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -45,7 +45,8 @@ config SATA_PMP
 	bool "SATA Port Multiplier support"
 	default y
 	help
-	  This option adds support for SATA Port Multipliers.
+	  This option adds support for SATA Port Multipliers
+	  (the SATA version of an ethernet hub, or SAS expander).
 
 config SATA_AHCI
 	tristate "AHCI SATA support"
@@ -79,6 +80,17 @@ config ATA_SFF
 	  This option adds support for ATA controllers with SFF
 	  compliant or similar programming interface.
 
+	  SFF is the legacy IDE interface that has been around since
+	  the dawn of time.  Almost all PATA controllers have an
+	  SFF interface.  Many SATA controllers have an SFF interface
+	  when configured into a legacy compatibility mode.
+
+	  For users with exclusively modern controllers like AHCI,
+	  Silicon Image 3124, or Marvell 6440, you may choose to
+	  disable this uneeded SFF support.
+
+	  If unsure, say Y.
+
 if ATA_SFF
 
 config SATA_SVW