[problem] mpt2sas load fails with LSISAS2008

[Paul Johnson <pjay@nwtrail.com>]

Hi -
In 3.19 rc6, the LSISAS2008 card is found but mpt2sas fails to load 
correctly. If pci=realloc=off is added to the startup command line, 
mpt2sas is correctly loaded.
- Paul Johnson

section of dmesg when it fails--
[    1.131580] mpt2sas0: diag reset: FAILED
[    1.132577] mpt2sas0: _base_get_ioc_facts: failed getting to correct 
state
[    1.134167] mpt2sas0: failure at 
/home/kernel/COD/linux/drivers/scsi/mpt2sas/mpt2sas_scsih.c:8192/_scsih_probe()!

section of dmesg with pci=realloc=off in command line--
[    0.976615] mpt2sas version 18.100.00.00 loaded
[    0.976875] mpt2sas0: 64 BIT PCI BUS DMA ADDRESSING SUPPORTED, total 
mem (16424512 kB)
[    0.987346] ahci 0000:00:1f.2: AHCI 0001.0300 32 slots 6 ports 3 Gbps 
0x3f impl SATA mode
[    0.987351] ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo 
pmp pio slum part ems apst
[    1.028403] scsi host3: ahci
[    1.028777] scsi host4: ahci
[    1.029191] scsi host5: ahci
[    1.029706] scsi host6: ahci
[    1.030195] scsi host7: ahci
[    1.030719] scsi host8: ahci
[    1.030842] ata3: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd100 irq 29
[    1.030848] ata4: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd180 irq 29
[    1.030851] ata5: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd200 irq 29
[    1.030855] ata6: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd280 irq 29
[    1.030858] ata7: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd300 irq 29
[    1.030862] ata8: SATA max UDMA/133 abar m2048@0xfbffd000 port 
0xfbffd380 irq 29
[    1.043348] ahci 0000:02:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 
0x3 impl SATA mode
[    1.043355] ahci 0000:02:00.0: flags: 64bit ncq pm led clo pmp pio 
slum part
[    1.043821] scsi host9: ahci
[    1.044329] scsi host10: ahci
[    1.044437] ata9: SATA max UDMA/133 abar m8192@0xfbcfe000 port 
0xfbcfe100 irq 16
[    1.044442] ata10: SATA max UDMA/133 abar m8192@0xfbcfe000 port 
0xfbcfe180 irq 16
[    1.263497] mpt2sas0: MSI-X vectors supported: 1, no of cores: 8, 
max_msix_vectors: 8
[    1.263560] mpt2sas0-msix0: PCI-MSI-X enabled: IRQ 31
[    1.263562] mpt2sas0: iomem(0x00000000fbdfc000), 
mapped(0xffffc90005e88000), size(16384)
[    1.263563] mpt2sas0: ioport(0x000000000000ce00), size(256)
[    1.363457] ata10: SATA link down (SStatus 0 SControl 300)
[    1.363614] ata9: SATA link down (SStatus 0 SControl 300)
[    1.371405] usb 5-2: new low-speed USB device number 2 using uhci_hcd
[    1.519464] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    1.521144] ata3.00: ATA-8: WDC WD2000FYYZ-01UL1B2, 01.01K03, max 
UDMA/133
[    1.521150] ata3.00: 3907029168 sectors, multi 0: LBA48 NCQ (depth 
31/32), AA
[    1.522255] ata3.00: configured for UDMA/133
[    1.522554] scsi 3:0:0:0: Direct-Access     ATA      WDC WD2000FYYZ-0 
1K03 PQ: 0 ANSI: 5
[    1.523332] sd 3:0:0:0: Attached scsi generic sg0 type 0
[    1.523364] sd 3:0:0:0: [sda] 3907029168 512-byte logical blocks: 
(2.00 TB/1.81 TiB)
[    1.523623] sd 3:0:0:0: [sda] Write Protect is off
[    1.523626] sd 3:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.523779] sd 3:0:0:0: [sda] Write cache: enabled, read cache: 
enabled, doesn't support DPO or FUA
[    1.540486]  sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
[    1.542848] sd 3:0:0:0: [sda] Attached SCSI disk
[    1.551524] mpt2sas0: sending diag reset !!
[    1.570573] usb 5-2: New USB device found, idVendor=04b4, idProduct=0101
[    1.570580] usb 5-2: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[    1.570584] usb 5-2: Product: Cypress PS/2 Keyboard - PS/2 Mouse
[    1.570587] usb 5-2: Manufacturer: Cypress
[    1.601643] hidraw: raw HID events driver (C) Jiri Kosina
[    1.630665] usbcore: registered new interface driver usbhid
[    1.630666] usbhid: USB HID core driver
[    1.631367] tsc: Refined TSC clocksource calibration: 2798.010 MHz
[    1.632616] input: Cypress Cypress PS/2 Keyboard - PS/2 Mouse as 
/devices/pci0000:00/0000:00:1a.2/usb5/5-2/5-2:1.0/0003:04B4:0101.0001/input/input3
[    1.687850] hid-generic 0003:04B4:0101.0001: input,hidraw0: USB HID 
v1.00 Keyboard [Cypress Cypress PS/2 Keyboard - PS/2 Mouse] on 
usb-0000:00:1a.2-2/input0
[    1.687986] input: Cypress Cypress PS/2 Keyboard - PS/2 Mouse as 
/devices/pci0000:00/0000:00:1a.2/usb5/5-2/5-2:1.1/0003:04B4:0101.0002/input/input4
[    1.688629] hid-generic 0003:04B4:0101.0002: input,hidraw1: USB HID 
v1.00 Mouse [Cypress Cypress PS/2 Keyboard - PS/2 Mouse] on 
usb-0000:00:1a.2-2/input1
[    2.015524] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    2.032504] ata4.00: ATA-8: Hitachi HDT721010SLA360, ST6OA31B, max 
UDMA/133
[    2.032510] ata4.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 
31/32), AA
[    2.033876] ata4.00: configured for UDMA/133
[    2.034281] scsi 4:0:0:0: Direct-Access     ATA      Hitachi HDT72101 
A31B PQ: 0 ANSI: 5
[    2.034907] sd 4:0:0:0: Attached scsi generic sg1 type 0
[    2.034980] sd 4:0:0:0: [sdb] 1953525168 512-byte logical blocks: 
(1.00 TB/931 GiB)
[    2.035036] sd 4:0:0:0: [sdb] Write Protect is off
[    2.035038] sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[    2.035051] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: 
enabled, doesn't support DPO or FUA
[    2.060978]  sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 sdb6 >
[    2.062906] sd 4:0:0:0: [sdb] Attached SCSI disk
[    2.351545] ata5: SATA link down (SStatus 0 SControl 300)
[    2.631977] Switched to clocksource tsc
[    2.695478] mpt2sas0: diag reset: SUCCESS
[    2.843535] ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    2.845273] mpt2sas0: Allocated physical memory: size(3392 kB)
[    2.845275] mpt2sas0: Current Controller Queue Depth(1483), Max 
Controller Queue Depth(1720)
[    2.845276] mpt2sas0: Scatter Gather Elements per IO(128)
[    2.850249] ata6.00: ATA-8: WDC WD1200AAJS-00VTA0, 01.01B01, max UDMA/133
[    2.850255] ata6.00: 234441648 sectors, multi 0: LBA48
[    2.857664] ata6.00: configured for UDMA/133
[    2.858069] scsi 6:0:0:0: Direct-Access     ATA      WDC WD1200AAJS-0 
1B01 PQ: 0 ANSI: 5
[    2.858674] sd 6:0:0:0: Attached scsi generic sg2 type 0
[    2.858759] sd 6:0:0:0: [sdc] 234441648 512-byte logical blocks: (120 
GB/111 GiB)
[    2.858953] sd 6:0:0:0: [sdc] Write Protect is off
[    2.858960] sd 6:0:0:0: [sdc] Mode Sense: 00 3a 00 00
[    2.859136] sd 6:0:0:0: [sdc] Write cache: enabled, read cache: 
enabled, doesn't support DPO or FUA
[    2.869167]  sdc: sdc1 sdc2 sdc3 sdc4
[    2.869889] sd 6:0:0:0: [sdc] Attached SCSI disk
[    3.088109] mpt2sas0: LSISAS2008: FWVersion(17.00.01.00), 
ChipRevision(0x03), BiosVersion(07.33.00.00)
[    3.088111] mpt2sas0: Protocol=(Initiator), 
Capabilities=(Raid,TLR,EEDP,Snapshot Buffer,Diag Trace Buffer,Task Set 
Full,NCQ)
[    3.088162] scsi host2: Fusion MPT SAS Host
[    3.088322] mpt2sas0: sending port enable !!
[    3.175478] ata7: SATA link down (SStatus 0 SControl 300)
[    3.495548] ata8: SATA link down (SStatus 0 SControl 300)
[    3.987688] floppy0: no floppy controllers found
[    3.987703] work still pending
[    4.715245] mpt2sas0: host_add: handle(0x0001), 
sas_addr(0x500605b001bdc971), phys(8)
[    8.422927] random: nonblocking pool is initialized
[    8.422948] EXT4-fs (sdc4): mounting ext2 file system using the ext4 
subsystem
[    8.450682] EXT4-fs (sdc4): mounted filesystem without journal. Opts: 
(null)
[    9.851978] mpt2sas0: port enable: SUCCESS