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authorGrygorii Strashko <grygorii.strashko@ti.com>2020-12-24 19:24:05 +0300
committerJakub Kicinski <kuba@kernel.org>2020-12-29 00:32:34 +0300
commit4614792eebcbf81c60ad3604c1aeeb2b0899cea4 (patch)
tree021179a47711a66b7afaec858b327b343c5fed28 /drivers/net/ethernet/ti
parent5ff3fda971ae6c5a0d884dc9ff8780e89536fb72 (diff)
downloadlinux-4614792eebcbf81c60ad3604c1aeeb2b0899cea4.tar.xz
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@ti.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/20201224162405.28032-1-grygorii.strashko@ti.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/ti')
-rw-r--r--drivers/net/ethernet/ti/cpts.c2
1 files changed, 2 insertions, 0 deletions
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;