net: ethernet: mtk_eth_soc: reduce MDIO bus access latency

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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,
which easily adds multiple seconds to the boot time on MT7621 when polling
DSA slave ports.
Use cond_resched instead of usleep_range, since the MDIO access does not
take much time

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Felix Fietkau 2021-04-22 22:20:58 -07:00 • committed by David S. Miller

parent c30c4a8273

commit 3630d519d7

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/mediatek/mtk_eth_soc.c

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