Re: [PATCH net-next v3] net: dsa: mv88e6xxx: Prevent suspend to RAM

From: Pavel Machek
Date: Mon Apr 08 2019 - 17:55:47 EST

On Tue 2019-02-05 12:07:28, Miquel Raynal wrote:
> On one hand, the mv88e6xxx driver has a work queue called in loop
> which will attempt register accesses after MDIO bus suspension, that
> entirely freezes the platform during suspend.
> On the other hand, the DSA core is not ready yet to support suspend to
> RAM operation because so far there is no way to recover reliably the
> switch configuration.
> To avoid the kernel to freeze when suspending with a switch driven by
> the mv88e6xxx driver, we choose to prevent the driver suspension and
> in the same way, the whole platform.
> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>

Could we at least do printk() so that user knows what went wrong?

Debugging s2ram is usually not easy :-(.

(cesky, pictures)

Attachment: signature.asc
Description: Digital signature