Re: [PATCH net-next 05/14] net: ethernet: mtk_eth_soc: reduce MDIO bus access latency

[Andrew Lunn]

On Wed, Apr 21, 2021 at 09:09:05PM -0700, Ilya Lipnitskiy wrote:
> From: Felix Fietkau <nbd@xxxxxxxx>
> 
> usleep_range often ends up sleeping much longer than the 10-20us provided
> as a range here. This causes significant latency in mdio bus acceses,

I found the same with the FEC driver, and make the same change.

> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
> [Ilya: use readx_poll_timeout_atomic instead of cond_resched]
> Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@xxxxxxxxx>


Reviewed-by: Andrew Lunn <andrew@xxxxxxx>

    Andrew