Re: [PATCH net] net: ethernet: ti: cpts: fix ethtool output when no ptp_clock registered

On Thu, 24 Dec 2020 13:21:36 -0800 Richard Cochran wrote:

On Thu, Dec 24, 2020 at 06:24:05PM +0200, Grygorii Strashko wrote:

quoted

The CPTS driver registers PTP PHC clock when first netif is going up and
unregister it when all netif are down. Now ethtool will show:
 - PTP PHC clock index 0 after boot until first netif is up;
 - the last assigned PTP PHC clock index even if PTP PHC clock is not
registered any more after all netifs are down.

This patch ensures that -1 is returned by ethtool when PTP PHC clock is not
registered any more.

Fixes: 8a2c9a5ab4b9 ("net: ethernet: ti: cpts: rework initialization/deinitialization")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>  

Acked-by: Richard Cochran <richardcochran@gmail.com>

Applied, thank you!