From f2f027c6e9912840020be8b78f037d5c8ac665e0 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Wed, 23 May 2007 14:41:42 -0700 Subject: [PATCH] [SCSI] fix CONFIG_SCSI_WAIT_SCAN=m CONFIG_MODULES=y CONFIG_SCSI=y CONFIG_SCSI_SCAN_ASYNC=y CONFIG_SCSI_WAIT_SCAN=m 2.6.21-rc5-mm2 VFS panics unable to find my root on /dev/sda2, but boots okay if I change drivers/scsi/Kconfig to "default y" instead of "default m" for SCSI_WAIT_SCAN. Make sure there's a late_initcall to scsi_complete_async_scans when it's built in, so a monolithic SCSI_SCAN_ASYNC kernel can rely on the scans being completed before trying to mount root, even if they're slow. [akpm@linux-foundation.org: build fixes] Signed-off-by: Hugh Dickins Acked-by: Matthew Wilcox Signed-off-by: James Bottomley --- drivers/scsi/scsi_scan.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index a67f315244d7..662577fbe7a8 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -184,6 +184,15 @@ int scsi_complete_async_scans(void) /* Only exported for the benefit of scsi_wait_scan */ EXPORT_SYMBOL_GPL(scsi_complete_async_scans); +#ifndef MODULE +/* + * For async scanning we need to wait for all the scans to complete before + * trying to mount the root fs. Otherwise non-modular drivers may not be ready + * yet. + */ +late_initcall(scsi_complete_async_scans); +#endif + /** * scsi_unlock_floptical - unlock device via a special MODE SENSE command * @sdev: scsi device to send command to -- 2.20.1