netdev - [PATCH net-next 5/6] ionic: pull hwstamp queue

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Message-Id: <20210827185512.50206-6-snelson@pensando.io>
Date:   Fri, 27 Aug 2021 11:55:11 -0700
From:   Shannon Nelson <snelson@...sando.io>
To:     davem@...emloft.net, netdev@...r.kernel.org, kuba@...nel.org
Cc:     drivers@...sando.io, jtoppins@...hat.com,
        Shannon Nelson <snelson@...sando.io>
Subject: [PATCH net-next 5/6] ionic: pull hwstamp queue_lock up a level

Move the hwstamp configuration use of queue_lock up
a level to simplify use and error handling.

Signed-off-by: Shannon Nelson <snelson@...sando.io>
---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c | 16 ++--------------
 drivers/net/ethernet/pensando/ionic/ionic_phc.c |  4 ++++
 2 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 1d31b9385849..96e7e289b7d3 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -849,10 +849,8 @@ int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif)
 	u64 features;
 	int err;
 
-	mutex_lock(&lif->queue_lock);
-
 	if (lif->hwstamp_txq)
-		goto out;
+		return 0;
 
 	features = IONIC_Q_F_2X_CQ_DESC | IONIC_TXQ_F_HWSTAMP;
 
@@ -894,9 +892,6 @@ int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif)
 		}
 	}
 
-out:
-	mutex_unlock(&lif->queue_lock);
-
 	return 0;
 
 err_qcq_enable:
@@ -907,7 +902,6 @@ int ionic_lif_create_hwstamp_txq(struct ionic_lif *lif)
 	ionic_qcq_free(lif, txq);
 	devm_kfree(lif->ionic->dev, txq);
 err_qcq_alloc:
-	mutex_unlock(&lif->queue_lock);
 	return err;
 }
 
@@ -919,10 +913,8 @@ int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif)
 	u64 features;
 	int err;
 
-	mutex_lock(&lif->queue_lock);
-
 	if (lif->hwstamp_rxq)
-		goto out;
+		return 0;
 
 	features = IONIC_Q_F_2X_CQ_DESC | IONIC_RXQ_F_HWSTAMP;
 
@@ -960,9 +952,6 @@ int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif)
 		}
 	}
 
-out:
-	mutex_unlock(&lif->queue_lock);
-
 	return 0;
 
 err_qcq_enable:
@@ -973,7 +962,6 @@ int ionic_lif_create_hwstamp_rxq(struct ionic_lif *lif)
 	ionic_qcq_free(lif, rxq);
 	devm_kfree(lif->ionic->dev, rxq);
 err_qcq_alloc:
-	mutex_unlock(&lif->queue_lock);
 	return err;
 }
 
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
index afc45da399d4..c39790a6c436 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_phc.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
@@ -194,7 +194,9 @@ int ionic_lif_hwstamp_set(struct ionic_lif *lif, struct ifreq *ifr)
 	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
 		return -EFAULT;
 
+	mutex_lock(&lif->queue_lock);
 	err = ionic_lif_hwstamp_set_ts_config(lif, &config);
+	mutex_unlock(&lif->queue_lock);
 	if (err) {
 		netdev_info(lif->netdev, "hwstamp set failed: %d\n", err);
 		return err;
@@ -213,7 +215,9 @@ void ionic_lif_hwstamp_replay(struct ionic_lif *lif)
 	if (!lif->phc || !lif->phc->ptp)
 		return;
 
+	mutex_lock(&lif->queue_lock);
 	err = ionic_lif_hwstamp_set_ts_config(lif, NULL);
+	mutex_unlock(&lif->queue_lock);
 	if (err)
 		netdev_info(lif->netdev, "hwstamp replay failed: %d\n", err);
 }
-- 
2.17.1