Re: [PATCH v3 2/2] PCI: imx6: limit DBI register length

[Leonard Crestez]

On 11/20/2018 11:28 PM, Trent Piepho wrote:
> On Tue, 2018-11-20 at 21:42 +0100, Stefan Agner wrote:
>> On 20.11.2018 20:13, Trent Piepho wrote:

>>> It also seems to me that this doesn't need to be in the internal pci
>>> config access functions.  The driver shouldn't be reading registers
>>> that don't exist anyway.  It's really about trying to fix sysfs access
>>> to registers that don't exist.  So maybe it should be done there.
>>
>> That was my first approach, see:
> 
> Yes, but that just used the pci device id which applies to every IMX
> design.
> 
> It's also not totally correct, as it seems real registers after 0x200
> do work on imx6, and that would prevent access to them.

I see that Lorenzo already accepted the patch in pci/dwc:

https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/commit/?h=pci/dwc&id=f14eaec153aaebbe940ddd21e4198cc2abc927c2

My tests show that this series breaks pci cards on 6qdl and I think it 
should be reverted until a fix is found. Are you OK with this?

Fixing might require an entirely different approach.