[PATCH net-next 8/8] ionic: extend ts_config set locking

[Shannon Nelson]

Make sure the configuration is locked before
operating on it for the replay.

Signed-off-by: Shannon Nelson <snel...@pensando.io>
---
 drivers/net/ethernet/pensando/ionic/ionic_phc.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c 
b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
index 2bb749097d9e..177dbf89affd 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_phc.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
@@ -79,6 +79,8 @@ static int ionic_lif_hwstamp_set_ts_config(struct ionic_lif 
*lif,
        if (!lif->phc || !lif->phc->ptp)
                return -EOPNOTSUPP;
 
+       mutex_lock(&lif->phc->config_lock);
+
        if (new_ts) {
                config = new_ts;
        } else {
@@ -96,12 +98,16 @@ static int ionic_lif_hwstamp_set_ts_config(struct ionic_lif 
*lif,
        }
 
        tx_mode = ionic_hwstamp_tx_mode(config->tx_type);
-       if (tx_mode < 0)
-               return tx_mode;
+       if (tx_mode < 0) {
+               err = tx_mode;
+               goto err_queues;
+       }
 
        mask = cpu_to_le64(BIT_ULL(tx_mode));
-       if ((ionic->ident.lif.eth.hwstamp_tx_modes & mask) != mask)
-               return -ERANGE;
+       if ((ionic->ident.lif.eth.hwstamp_tx_modes & mask) != mask) {
+               err = -ERANGE;
+               goto err_queues;
+       }
 
        rx_filt = ionic_hwstamp_rx_filt(config->rx_filter);
        rx_all = config->rx_filter != HWTSTAMP_FILTER_NONE && !rx_filt;
@@ -116,8 +122,6 @@ static int ionic_lif_hwstamp_set_ts_config(struct ionic_lif 
*lif,
        dev_dbg(ionic->dev, "config_rx_filter %d rx_filt %#llx rx_all %d\n",
                config->rx_filter, rx_filt, rx_all);
 
-       mutex_lock(&lif->phc->config_lock);
-
        if (tx_mode) {
                err = ionic_lif_create_hwstamp_txq(lif);
                if (err)
-- 
2.17.1