On Tue, Nov 01, 2016 at 10:50:01AM +0000, Russell King wrote:
> The coalesce settings behave badly when changing just one value:
>
> ... # ethtool -c eth0
> rx-usecs: 249
> ... # ethtool -C eth0 tx-usecs 250
> ... # ethtool -c eth0
> rx-usecs: 248
>
> This occurs due to rounding errors when calculating the microseconds
> value - the divisons round down. This causes (eg) the rx-usecs to
> decrease by one every time the tx-usecs value is set as per the above.
>
> Fix this by making the divison round-to-nearest.
>
> Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
Reviewed-by: Andrew Lunn <and...@lunn.ch>
Andrew
