@@ -698,7 +698,6 @@ struct fec_enet_private {
void fec_ptp_init(struct platform_device *pdev, int irq_idx);
void fec_ptp_stop(struct platform_device *pdev);
void fec_ptp_start_cyclecounter(struct net_device *ndev);
-void fec_ptp_disable_hwts(struct net_device *ndev);
int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config,
struct netlink_ext_ack *extack);
void fec_ptp_get(struct net_device *ndev, struct kernel_hwtstamp_config *config);
@@ -3895,11 +3895,8 @@ static int fec_hwtstamp_set(struct net_device *ndev,
struct fec_enet_private *fep = netdev_priv(ndev);
struct phy_device *phydev = ndev->phydev;
- if (phy_has_hwtstamp(phydev)) {
- fec_ptp_disable_hwts(ndev);
-
+ if (phy_has_hwtstamp(phydev))
return phy_mii_ioctl(phydev, config->ifr, SIOCSHWTSTAMP);
- }
if (!netif_running(ndev))
return -EINVAL;
@@ -605,18 +605,6 @@ static int fec_ptp_enable(struct ptp_clock_info *ptp,
}
}
-/**
- * fec_ptp_disable_hwts - disable hardware time stamping
- * @ndev: pointer to net_device
- */
-void fec_ptp_disable_hwts(struct net_device *ndev)
-{
- struct fec_enet_private *fep = netdev_priv(ndev);
-
- fep->hwts_tx_en = 0;
- fep->hwts_rx_en = 0;
-}
-
int fec_ptp_set(struct net_device *ndev, struct kernel_hwtstamp_config *config,
struct netlink_ext_ack *extack)
{
Commit 340746398b67 ("net: fec: fix hardware time stamping by external devices") was overly cautious with calling fec_ptp_disable_hwts() when cmd == SIOCSHWTSTAMP and use_fec_hwts == false, because use_fec_hwts is based on a runtime invariant (phy_has_hwtstamp()). Thus, if use_fec_hwts is false, then fep->hwts_tx_en and fep->hwts_rx_en cannot be changed at runtime; their values depend on the initial memory allocation, which already sets them to zeroes. If the core will ever gain support for switching timestamping layers, it will arrange for a more organized calling convention and disable timestamping in the previous layer as a first step. This means that the code in the FEC driver is not necessary in any case. The purpose of this change is to arrange the phy_has_hwtstamp() code in a way in which it can be refactored away into generic logic. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Wei Fang <wei.fang@nxp.com> --- Changes in v8-v9: - None Changes in v7: - Patch is new drivers/net/ethernet/freescale/fec.h | 1 - drivers/net/ethernet/freescale/fec_main.c | 5 +---- drivers/net/ethernet/freescale/fec_ptp.c | 12 ------------ 3 files changed, 1 insertion(+), 17 deletions(-)