Backport of the Linux MegaRAID driver for SAS based RAID controllers

backport of the megaraid_sas driver from kernel 4.14.20 to kernel 4.9.82

Hi,

Hardware:
DMI: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.00.01.0009.101920170742 10/19/2017

I copy /usr/src/linux-4.14.20/drivers/scsi/megaraid to /usr/src/linux-4.9.82/drivers/scsi/megaraid . I compile the kernel 4.9.82 and is OK !
I send dmesg atached.

The problem for original linux kernel 4.9.82 is :

5e:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID Tri-Mode SAS3508 (rev 01)
        Subsystem: Intel Corporation MegaRAID Tri-Mode SAS3508 (Integrated RAID Module RMSP3CD080F)
        Flags: bus master, fast devsel, latency 0, IRQ 36, NUMA node 0
        Memory at 38fffff00000 (64-bit, prefetchable) [size=1M]
        Memory at 38ffffe00000 (64-bit, prefetchable) [size=1M]
        Memory at b8800000 (32-bit, non-prefetchable) [size=1M]
        I/O ports at 8000 [size=256]
        Expansion ROM at <ignored> [disabled]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
        Capabilities: [70] Express Endpoint, MSI 00
        Capabilities: [b0] MSI-X: Enable+ Count=128 Masked-
        Capabilities: [d0] Vital Product Data
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [148] Power Budgeting <?>Regards,
        Capabilities: [158] Alternative Routing-ID Interpretation (ARI)
        Capabilities: [168] #19
        Capabilities: [254] #16
        Capabilities: [284] Vendor Specific Information: ID=0002 Rev=1 Len=100 <?>
        Capabilities: [384] Vendor Specific Information: ID=0001 Rev=1 Len=038 <?>
        Capabilities: [3bc] #15
        Kernel driver in use: megaraid_sas
        Kernel modules: megaraid_sas

Regards,
Doru Iorgulescu