broadcom: fix support for PTP_PEROUT_DUTY_CYCLE

The bcm_ptp_perout_locked() function has support for handling
PTP_PEROUT_DUTY_CYCLE, but its not listed in the supported_perout_flags.
Attempts to use the duty cycle support will be rejected since commit
d9f3e9ecc456 ("net: ptp: introduce .supported_perout_flags to
ptp_clock_info"), as this flag accidentally missed while doing the
conversion.

Drop the unnecessary supported flags check from the bcm_ptp_perout_locked()
function and correctly set the supported_perout_flags. This fixes use of
the PTP_PEROUT_DUTY_CYCLE support for the broadcom driver.

Reported-by: James Clark <jjc@jclark.com>
Fixes: d9f3e9ecc456 ("net: ptp: introduce .supported_perout_flags to ptp_clock_info")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Tested-by: James Clark <jjc@jclark.com>
Link: https://patch.msgid.link/20250918-jk-fix-bcm-phy-supported-flags-v1-1-747b60407c9c@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/phy/bcm-phy-ptp.c b/drivers/net/phy/bcm-phy-ptp.c
index eba8b5fb1365f4e43331e479e8e2f3c4b590ab96..1cf695ac73cc571cfeb8c4808fb6be6195170c8d 100644 (file)
--- a/drivers/net/phy/bcm-phy-ptp.c
+++ b/drivers/net/phy/bcm-phy-ptp.c
@@ -597,10 +597,6 @@ static int bcm_ptp_perout_locked(struct bcm_ptp_private *priv,
 
        period = BCM_MAX_PERIOD_8NS;    /* write nonzero value */
 
-       /* Reject unsupported flags */
-       if (req->flags & ~PTP_PEROUT_DUTY_CYCLE)
-               return -EOPNOTSUPP;
-
        if (req->flags & PTP_PEROUT_DUTY_CYCLE)
                pulse = ktime_to_ns(ktime_set(req->on.sec, req->on.nsec));
        else
@@ -741,6 +737,7 @@ static const struct ptp_clock_info bcm_ptp_clock_info = {
        .n_pins         = 1,
        .n_per_out      = 1,
        .n_ext_ts       = 1,
+       .supported_perout_flags = PTP_PEROUT_DUTY_CYCLE,
 };
 
 static void bcm_ptp_txtstamp(struct mii_timestamper *mii_ts,