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[SCSI] Remove scsi_wait_scan module 

scsi_wait_scan was introduced with asynchronous host scanning as a hack
for distributions that weren't using proper udev based wait for root to
appear in their initramfs scripts.  In 2.6.30 Commit

c751085943
Author: Rafael J. Wysocki <rjw@sisk.pl>
Date:   Sun Apr 12 20:06:56 2009 +0200

    PM/Hibernate: Wait for SCSI devices scan to complete during resume

Actually broke scsi_wait_scan because it renders
scsi_complete_async_scans() a nop for modular SCSI if you include
scsi_scans.h (which this module does).

The lack of bug reports is sufficient proof that this module is no
longer used.

Cc: Jeff Mahoney <jeffm@suse.de>
Cc: Dave Jones <davej@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Bottomley 2012-05-27 10:13:46 +01:00
parent 4e5fae7adb
commit 6072609d9b
3 changed files with 0 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/scsi/Kconfig
View File

@ -263,23 +263,6 @@ config SCSI_SCAN_ASYNC
You can override this choice by specifying "scsi_mod.scan=sync"
or async on the kernel's command line.
config SCSI_WAIT_SCAN
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

2
drivers/scsi/Makefile
View File

@ -159,8 +159,6 @@ obj-$(CONFIG_SCSI_OSD_INITIATOR) += osd/
# This goes last, so that "real" scsi devices probe earlier
obj-$(CONFIG_SCSI_DEBUG) += scsi_debug.o
obj-$(CONFIG_SCSI_WAIT_SCAN) += scsi_wait_scan.o
scsi_mod-y += scsi.o hosts.o scsi_ioctl.o constants.o \
scsicam.o scsi_error.o scsi_lib.o
scsi_mod-$(CONFIG_SCSI_DMA) += scsi_lib_dma.o

37
drivers/scsi/scsi_wait_scan.c
View File

@ -1,37 +0,0 @@
/*
* scsi_wait_scan.c
*
* Copyright (C) 2006 James Bottomley <James.Bottomley@SteelEye.com>
*
* This is a simple module to 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
*/
#include <linux/module.h>
#include <linux/device.h>
#include "scsi_priv.h"
static int __init wait_scan_init(void)
{
/*
* First we need to wait for device probing to finish;
* the drivers we just loaded might just still be probing
* and might not yet have reached the scsi async scanning
*/
wait_for_device_probe();
return 0;
}
static void __exit wait_scan_exit(void)
{
}
MODULE_DESCRIPTION("SCSI wait for scans");
MODULE_AUTHOR("James Bottomley");
MODULE_LICENSE("GPL");
late_initcall(wait_scan_init);
module_exit(wait_scan_exit);