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Date: Thu, 24 Dec 2020 18:24:05 +0200 From: Grygorii Strashko <grygorii.strashko@...com> To: "David S. Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>, Jakub Kicinski <kuba@...nel.org>, Richard Cochran <richardcochran@...il.com> CC: <linux-kernel@...r.kernel.org>, Vignesh Raghavendra <vigneshr@...com>, Lokesh Vutla <lokeshvutla@...com>, Grygorii Strashko <grygorii.strashko@...com> Subject: [PATCH net] net: ethernet: ti: cpts: fix ethtool output when no ptp_clock registered 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@...com> --- drivers/net/ethernet/ti/cpts.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c index d1fc7955d422..43222a34cba0 100644 --- a/drivers/net/ethernet/ti/cpts.c +++ b/drivers/net/ethernet/ti/cpts.c @@ -599,6 +599,7 @@ void cpts_unregister(struct cpts *cpts) ptp_clock_unregister(cpts->clock); cpts->clock = NULL; + cpts->phc_index = -1; cpts_write32(cpts, 0, int_enable); cpts_write32(cpts, 0, control); @@ -784,6 +785,7 @@ struct cpts *cpts_create(struct device *dev, void __iomem *regs, cpts->cc.read = cpts_systim_read; cpts->cc.mask = CLOCKSOURCE_MASK(32); cpts->info = cpts_info; + cpts->phc_index = -1; if (n_ext_ts) cpts->info.n_ext_ts = n_ext_ts; -- 2.17.1
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