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 <t...@linutronix.de>
> Cc: "David S. Miller" <da...@davemloft.net>
> Cc: dingtianhong <dingtianh...@huawei.com>
> Cc: Arnd Bergmann <a...@arndb.de>
> Cc: Zhangfei Gao <zhangfei....@linaro.org>
> Cc: Dan Carpenter <dan.carpen...@oracle.com>
> Cc: net...@vger.kernel.org
> 

Acked-by: Arnd Bergmann <a...@arndb.de>
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