diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2020-12-24 18:24:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 20:16:14 +0100 |
| commit | c076e11985546db5e70210592c8baaf56e42e471 (patch) | |
| tree | 561d51dc82ff2f353a1d66384e77956d78649ba5 | |
| parent | 8602c20a9160503ef8576490c0e4f879790aeb5d (diff) | |
net: ethernet: ti: cpts: fix ethtool output when no ptp_clock registered
[ Upstream commit 4614792eebcbf81c60ad3604c1aeeb2b0899cea4 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/ti/cpts.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c index 61136428e2c0..26cfe3f7ed8d 100644 --- a/drivers/net/ethernet/ti/cpts.c +++ b/drivers/net/ethernet/ti/cpts.c @@ -485,6 +485,7 @@ 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); @@ -667,6 +668,7 @@ 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; cpts_calc_mult_shift(cpts); /* save cc.mult original value as it can be modified |