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

[Trent Piepho]

On Mon, 2018-11-19 at 10:41 +0100, Stefan Agner wrote:
> Define the length of the DBI registers. This makes sure that
> the kernel does not access registers beyond that point, avoiding
> the following abort on a i.MX 6Quad:
>   # cat
> /sys/devices/soc0/soc/1ffc000.pcie/pci0000\:00/0000\:00\:00.0/config
>   [  100.021433] Unhandled fault: imprecise external abort (0x1406)
> at 0xb6ea7000
>   ...
>   [  100.056423] PC is at dw_pcie_read+0x50/0x84
>   [  100.060790] LR is at dw_pcie_rd_own_conf+0x44/0x48
>   ...
> 
> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>

After updating this for v4.20-rc2, tested on IMX 7d, config space
access works as before.

Tested-by: Trent Piepho <tpiepho@xxxxxxxxxx>