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explain the hidden scsi_wait_scan Kconfig variable

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People keep sending patches to expose CONFIG_SCSI_WAIT_SCAN as a tunable
item.  These patches aren't accepted upstream, so let's stop the ongoing
irritation of people due to the unconditionally installed module and its
Kconfig symbol.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Stefan Richter 2009-06-18 21:03:23 +02:00 committed by James Bottomley
parent 017b2ae33c
commit 5e2fb91792
1 changed files with 12 additions and 1 deletions
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13
drivers/scsi/Kconfig
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@ -258,10 +258,21 @@ config SCSI_SCAN_ASYNC
or async on the kernel's command line.
config SCSI_WAIT_SCAN
tristate
tristate # No prompt here, this is an invisible symbol.
default m
depends on SCSI
depends on MODULES
# scsi_wait_scan is a loadable module which waits 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 buses before allowing the boot to
# proceed. (This method is not applicable if targets boot independently in
# parallel with the initiator, or with transports with non-deterministic target
# discovery schemes, or if a transport driver does not support scsi_wait_scan.)
#
# This symbol is not exposed as a prompt because little is to be gained by
# disabling it, whereas people who accidentally switch it off may wonder why
# their mkinitrd gets into trouble.
menu "SCSI Transports"
depends on SCSI