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

From: Pavel Machek <[email-masked]>
Date: Mon, 8 Apr 2019 23:55:41 +0200

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 <[email-masked]>

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

Debugging s2ram is usually not easy :-(.
								Pavel
 
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