Problems with Kernels 3.17-rc1 and onwards on Acube Sam460 AMCC 460ex board

[Michael Ellerman]

On Sun, 2015-02-15 at 08:16 -0400, Julian Margetson wrote:
> Hi
> 
> I am unable to get any kernel beyond  the 3.16 branch working on an
> Acube Sam460ex
>  AMCC 460ex based motherboard. Kernel  up 3.16.7-ckt6 working.

Does reverting b0345bbc6d09 change anything?

> [    6.364350] snd_hda_intel 0001:81:00.1: enabling device (0000 -> 0002)
> [    6.453794] snd_hda_intel 0001:81:00.1: ppc4xx_setup_msi_irqs: fail mapping irq
> [    6.487530] Unable to handle kernel paging request for data at address 0x0fa06c7c
> [    6.495055] Faulting instruction address: 0xc032202c
> [    6.500033] Vector: 300 (Data Access) at [efa31cf0]
> [    6.504922]     pc: c032202c: __reg_op+0xe8/0x100
> [    6.509697]     lr: c0014f88: msi_bitmap_free_hwirqs+0x50/0x94
> [    6.515600]     sp: efa31da0
> [    6.518491]    msr: 21000
> [    6.521112]    dar: fa06c7c
> [    6.523915]  dsisr: 0
> [    6.526190]   current = 0xef8bab00
> [    6.529603]     pid   = 115, comm = kworker/0:1
> [    6.534163] enter ? for help
> [    6.537054] [link register   ] c0014f88 msi_bitmap_free_hwirqs+0x50/0x94
> [    6.543811] [efa31da0] c0014f78 msi_bitmap_free_hwirqs+0x40/0x94 (unreliable)
> [    6.551001] [efa31dc0] c001aee8 ppc4xx_setup_msi_irqs+0xac/0xf4
> [    6.556973] [efa31e00] c03503a4 pci_enable_msi_range+0x1e0/0x280
> [    6.563032] [efa31e40] f92c2f74 azx_probe_work+0xe0/0x57c [snd_hda_intel]
> [    6.569906] [efa31e80] c0036344 process_one_work+0x1e8/0x2f0
> [    6.575627] [efa31eb0] c003677c worker_thread+0x2f4/0x438
> [    6.581079] [efa31ef0] c003a3e4 kthread+0xc8/0xcc
> [    6.585844] [efa31f40] c000aec4 ret_from_kernel_thread+0x5c/0x64
> [    6.591910] mon>  <no input ...>


cheers