[PATCH] scsi_wait_scan: no option appears when configuring for scsi_wait_scan.

[Changli Gao]

FIXBUG: missing comment after tristate leads to no option for
scsci_wait_scan when configuring.

When build kernel, this module is always built if I choose SCSI, and I
can't find any option in the configuration menu, so I can't disable it
or build it into kernel statically. After diving into the kernel source
code, I found no comment after keyword tristate, then I added the
comment and help.

Signed-off-by: Changli Gao <xiaosuo@xxxxxxxxx <mailto:xiaosuo@xxxxxxxxx>>
----

Kconfig | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- drivers/scsi/Kconfig.orig	2009-06-17 09:52:46.000000000 +0800
+++ drivers/scsi/Kconfig	2009-06-17 09:55:57.000000000 +0800
@@ -259,10 +259,15 @@
 	  or async on the kernel's command line.
 
 config SCSI_WAIT_SCAN
-	tristate
+	tristate "Wait until all the async scans are complete"
 	default m
 	depends on SCSI
 	depends on MODULES
+	help
+	  Wait until all the async scans are complete. The idea is to use it in
+	  initrd/initramfs scripts.  You modprobe it after all the modprobes of
+	  the root SCSI drivers and it will wait until they have all finished
+	  scanning their busses before allowing the boot to proceed
 
 menu "SCSI Transports"
 	depends on SCSI

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