Re: PROBLEM: Attempt to Enable CAN Network with MCP251x SPI Interface Results in Kernel Panics at Boot

[Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>]

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On Tue, May 26, 2015 at 05:21:23PM +0000, Jesse James wrote:
> Hello,
> 
> I recently purchased a A10-OLinuXino-LIME from
> https://www.olimex.com/.  This board uses the Allwinner A10 Cortex-8
> chipset.  Using the kernel from https://github.com/linux-sunxi and
> commit e37d760b363888f3a65cd6455c99a75cac70a7b8, I was able to

this commit is not upstream, you need to ask for support from whoever
maintains linux-sunxi

> successfully build and run kernel 3.4.90+ on the above mentioned

yeah, this kernel is pretty old, you really need to contact linux-sunxi
maintainers.

> board.
> 
> I attempted to enable the CAN Network with the MCP251x SPI interface
> enabled, config file is attached, and now the kernel "panics" at
> boot.  The short hand looks like the following: (Full boot log is
> attached)
> 
> ///////////////////////////////////////////////////////////////////////////////////////////////
> <6>ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    1.272001] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> <1>Unable to handle kernel paging request at virtual address 71c007b4
> [    1.284403] Unable to handle kernel paging request at virtual address 71c007b4
> <1>pgd = c0004000
> [    1.293294] pgd = c0004000
> <1>[71c007b4] *pgd=00000000[    1.298345] [71c007b4] *pgd=00000000
> 
> <0>Internal error: Oops: 5 [#1] PREEMPT ARM
> [    1.306038] Internal error: Oops: 5 [#1] PREEMPT ARM
> <d>Modules linked in:[    1.312825] Modules linked in:
> 
> CPU: 0    Not tainted  (3.4.90+ #8)
> [    1.319284] CPU: 0    Not tainted  (3.4.90+ #8)
> PC is at sunxi_gpio_request_array.part.4+0xdc/0x4c4

this isn't even a USB bug. Unless you can reproduce this problem with
v4.0 or v4.1-rc5, then there's nothing this forum can do to help you
out, sorry.

-- 
balbi

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