drivers: net: davinci_mdio: remove busy loop on wait user access

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Polling 14 mdio devices on single mdio bus eats 30% of 1Ghz cpu time
due to busy loop in wait(). Add small delay to relax cpu.

Signed-off-by: Max Uvarov <muvarov@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Maxim Uvarov 2017-08-10 10:47:46 +03:00 • committed by David S. Miller

parent 3a4487b88f

commit 2e1c80847b

1 changed files with 3 additions and 1 deletions

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drivers/net/ethernet/ti/davinci_mdio.c

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