Description of problem: ips.ko driver fails to load on IBM 7025-F50 equipped with IBM ServeRAID 4H 4- channel Ultra3 SCSI RAID controller. Following recorded in dmesg: PCI: Enabling device 0001:40:0c.0 (0140 -> 0143) 0:0:4:0: Attached scsi generic sg0 type 5 sd 1:0:8:0: Attached scsi generic sg1 type 0 sd 1:0:9:0: Attached scsi generic sg2 type 0 ....skipped.... ips 0001:40:0c.0: unable to read config from controller. ips 0001:40:0c.0: Unable to initialize controller ips: probe of 0001:40:0c.0 failed with error -1 When I try to do 'modprobe ips' manually after system boot, different error is logged in dmesg: [1st try] ips 0001:40:0c.0: Couldn't allocate IO space feffe800 len 256. ips: probe of 0001:40:0c.0 failed with error -1 [2nd try] ips 0001:40:0c.0: Couldn't allocate IO Memory space d7f00000 len 1048576. ips: probe of 0001:40:0c.0 failed with error -1 Controller particulars (lspci -v): 0001:40:0c.0 RAID bus controller: IBM SCSI RAID Adapter [ServeRAID] (rev 10) Subsystem: IBM ServeRAID-4H Flags: medium devsel, IRQ 23 I/O ports at e4000800 [size=256] Memory at d7f00000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at d7eb8000 [disabled] [size=32K] Capabilities: [40] Vital Product Data Capabilities: [48] Power Management version 2 Version-Release number of selected component (if applicable): Linux version 2.6.16-1.2133_FC5smp Kernel command line: root=/dev/md1 ro rhgb splash ips=debug:11 How reproducible: always Steps to Reproduce: 1. modprobe ips 2. 3. Actual results: Expected results: Additional info: This does not seem to be pure hardware problem. When I boot IBM AIX operating system on the machine everything works fine, no errors.
*** This bug has been marked as a duplicate of 196437 ***