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(parent: 3a4487b) | patch
drivers: net: davinci_mdio: remove busy loop on wait user access
authorMaxim Uvarov <muvarov@gmail.com>
Thu, 10 Aug 2017 07:47:46 +0000 (10:47 +0300)
committerDavid S. Miller <davem@davemloft.net>
Fri, 11 Aug 2017 21:23:59 +0000 (14:23 -0700)
commit2e1c80847b9983a8c93a678f6de2dc3c42f19661
treec48837e059647422f9c99b320abda09d5b9f376etree | snapshot
parent3a4487b88f9a4deaded65fed60135b06298b7990commit | diff
drivers: net: davinci_mdio: remove busy loop on wait user access

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>
drivers/net/ethernet/ti/davinci_mdio.c diff | blob | history
Domain: System / Kernel;