Re: [PATCH 14/17] r8169: Use pcie_lnkctl_clear_and_set() for changing LNKCTL

From: Ilpo Järvinen
Date: Thu May 11 2023 - 16:00:20 EST


On Thu, 11 May 2023, Heiner Kallweit wrote:

> On 11.05.2023 15:14, Ilpo Järvinen wrote:
> > Don't assume that only the driver would be accessing LNKCTL. ASPM
> > policy changes can trigger write to LNKCTL outside of driver's control.
> >
> > Use pcie_lnkctl_clear_and_set() which does proper locking to avoid
> > losing concurrent updates to the register value.
> >
>
> Wouldn't it be more appropriate to add proper locking to the
> underlying pcie_capability_clear_and_set_word()?

As per discussion for the other patch, that's where this series is now
aiming to in v2.

--
i.