Re: [patch v2] net: hip04: Make tx coalesce timer actually work

From: Arnd Bergmann
Date: Wed Apr 15 2015 - 06:21:04 EST


On Tuesday 14 April 2015 21:42:42 Thomas Gleixner wrote:
> The code sets the expiry value of the timer to a relative value and
> starts it with hrtimer_start_expires. That's fine, but that only works
> once. The timer is started in relative mode, so the expiry value gets
> overwritten with the absolut expiry time (now + expiry).
>
> So once the timer expired, a new call to hrtimer_start_expires results
> in an immidiately expired timer, because the expiry value is
> already in the past.
>
> Use the proper mechanisms to (re)start the timer in the intended way.
>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
> Cc: dingtianhong <dingtianhong@xxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
> Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Cc: netdev@xxxxxxxxxxxxxxx
>

Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
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