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Description of problem:
I recompiled the kerenl source from kernel-source-2.4.17-0.rpm by building
aic7xxx driver into kernel (used by root fs). I did this to avoid initrd (which
has another problem in boot when devfs is enabled). The aic7xxx driver can be
loaded during boot, and the scsi chan are dicovered, but the boot image fails to
attach the scsi disk thus cause the boot failure. The messages printed out in
console is like:
....
        (scsi0:A:0:0): Target Initiated PPR
  Vendor: COMPAQPC  Model: MAG3091MP         Rev: 1807
  Type:   Direct-Access                      ANSI SCSI revision: 02
(scsi0:A:0): 80.000MB/s transfers (40.000MHz, offset 127, 16bit)
scsi0:A:0:0: Tagged Queuing enabled.  Depth 8
md: multipath personality registered as nr 7
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 16384)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
802.1Q VLAN Support v1.6  Ben Greear <greearb>
vlan Initialization complete.
request_module[block-major-8]: Root fs not mounted
VFS: Cannot open root device "805" or 08:05
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 08:05


The same config file used to compile standard kernel release 2.4.17 did succeed.


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.configure the kernel by choose CONFIG_SCSI=y, CONFIG_BLK_DEV_SD=y, and
CONFIG_AIC7XXX=y.
2.recompile the kernel
3.boot
	

Actual Results:  boot fails in mounting root filesystem.

Expected Results:  boot succeed.

Additional info: