diff mbox series

[net-next,v6,2/7] net: stmmac: Add dedicated XPCS cleanup method

Message ID 20240510-rzn1-gmac1-v6-2-b63942be334c@bootlin.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series net: stmmac: Add support for RZN1 GMAC devices | expand

Commit Message

Romain Gantois May 10, 2024, 7:38 a.m. UTC
From: Serge Semin <fancer.lancer@gmail.com>

Currently the XPCS handler destruction is performed in the
stmmac_mdio_unregister() method. It doesn't look good because the handler
isn't originally created in the corresponding protagonist
stmmac_mdio_unregister(), but in the stmmac_xpcs_setup() function. In
order to have more coherent MDIO and XPCS setup/cleanup procedures,
let's move the DW XPCS destruction to the dedicated stmmac_pcs_clean()
method.

This method will also be used to cleanup PCS hardware using the
pcs_exit() callback that will be introduced to stmmac in a subsequent
patch.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>
Signed-off-by: Romain Gantois <romain.gantois@bootlin.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h      |  1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  6 +++++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 14 +++++++++++---
 3 files changed, 17 insertions(+), 4 deletions(-)

Comments

Russell King (Oracle) May 10, 2024, 3:52 p.m. UTC | #1
On Fri, May 10, 2024 at 09:38:09AM +0200, Romain Gantois wrote:
> From: Serge Semin <fancer.lancer@gmail.com>
> 
> Currently the XPCS handler destruction is performed in the
> stmmac_mdio_unregister() method. It doesn't look good because the handler
> isn't originally created in the corresponding protagonist
> stmmac_mdio_unregister(), but in the stmmac_xpcs_setup() function. In
> order to have more coherent MDIO and XPCS setup/cleanup procedures,
> let's move the DW XPCS destruction to the dedicated stmmac_pcs_clean()
> method.
> 
> This method will also be used to cleanup PCS hardware using the
> pcs_exit() callback that will be introduced to stmmac in a subsequent
> patch.
> 
> Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
> Co-developed-by: Romain Gantois <romain.gantois@bootlin.com>

Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

Thanks!
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index dddcaa9220cc3..badfe686a5702 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -361,6 +361,7 @@  int stmmac_mdio_unregister(struct net_device *ndev);
 int stmmac_mdio_register(struct net_device *ndev);
 int stmmac_mdio_reset(struct mii_bus *mii);
 int stmmac_xpcs_setup(struct mii_bus *mii);
+void stmmac_pcs_clean(struct net_device *ndev);
 void stmmac_set_ethtool_ops(struct net_device *netdev);
 
 int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 3d828904db0d3..0ac99c132733d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7789,8 +7789,9 @@  int stmmac_dvr_probe(struct device *device,
 
 error_netdev_register:
 	phylink_destroy(priv->phylink);
-error_xpcs_setup:
 error_phy_setup:
+	stmmac_pcs_clean(ndev);
+error_xpcs_setup:
 	if (priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI)
 		stmmac_mdio_unregister(ndev);
@@ -7832,6 +7833,9 @@  void stmmac_dvr_remove(struct device *dev)
 	if (priv->plat->stmmac_rst)
 		reset_control_assert(priv->plat->stmmac_rst);
 	reset_control_assert(priv->plat->stmmac_ahb_rst);
+
+	stmmac_pcs_clean(ndev);
+
 	if (priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI)
 		stmmac_mdio_unregister(ndev);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 0542cfd1817e6..73ba9901a4439 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -523,6 +523,17 @@  int stmmac_xpcs_setup(struct mii_bus *bus)
 	return 0;
 }
 
+void stmmac_pcs_clean(struct net_device *ndev)
+{
+	struct stmmac_priv *priv = netdev_priv(ndev);
+
+	if (!priv->hw->xpcs)
+		return;
+
+	xpcs_destroy(priv->hw->xpcs);
+	priv->hw->xpcs = NULL;
+}
+
 /**
  * stmmac_mdio_register
  * @ndev: net device structure
@@ -679,9 +690,6 @@  int stmmac_mdio_unregister(struct net_device *ndev)
 	if (!priv->mii)
 		return 0;
 
-	if (priv->hw->xpcs)
-		xpcs_destroy(priv->hw->xpcs);
-
 	mdiobus_unregister(priv->mii);
 	priv->mii->priv = NULL;
 	mdiobus_free(priv->mii);