Hello,

I'm including Marek as he might have a similar situation. Also, extending the list with few guys from our side.

Thanks, Luka

On Thu, Nov 21, 2019 at 9:28 AM Stefan Roese sr@denx.de wrote:

Hi Chris,

(added Kosta to Cc)

On 21.11.19 08:43, Chris Packham wrote:

...

Hi Stefan and Luka,

I was wondering if you could shed some light on this commit

https://gitlab.denx.de/u-boot/u-boot/commit/501c098a1f2cdaa930cb1a7166d37244...

At $dayjob we're running into an issue where certain invalid PCI accesses when running Linux lead to the CPU hanging. Setting the IO Err Prop bit back to 1 seems to prevent the hang.

Can you recall why u-boot needs this bit cleared? We'll probably need to make the kernel restore the setting but I'd expect the kernel maintainers to point out that we're essentially restoring the hardware default so we'd need to explain that u-boot clears it because X but the kernel needs it set.

Frankly, I don't remember the details leading to this commit, sorry (too long ago). I also searched some older mails for any reference here, but failed so far.

Perhaps Kosta or someone else at Marvell remembers the details here? Kosta, could you please take a look?

Thanks, Stefan