5.10-stable review patch. If anyone has any objections, please let me know.
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From: Ioana Ciornei ioana.ciornei@nxp.com
[ Upstream commit 095dca16d92f32150314ef47ea150ed83c5aacd9 ]
Split up the initialization phase of the dpmac object from actually configuring the phylink instance, connecting to it and configuring the MAC. This is done so that even though the dpni object is connected to a dpmac which has link management handled by the firmware we are still able to export the MAC counters.
Signed-off-by: Ioana Ciornei ioana.ciornei@nxp.com Signed-off-by: Jakub Kicinski kuba@kernel.org Stable-dep-of: ee9f3a81ab08 ("dpaa2-eth: Fix device reference count leak in MAC endpoint handling") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 14 ++++ drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 69 ++++++++++++++--------- drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h | 5 + 3 files changed, 59 insertions(+), 29 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -4148,15 +4148,24 @@ static int dpaa2_eth_connect_mac(struct mac->mc_io = priv->mc_io; mac->net_dev = priv->net_dev;
+ err = dpaa2_mac_open(mac); + if (err) + goto err_free_mac; + err = dpaa2_mac_connect(mac); if (err) { netdev_err(priv->net_dev, "Error connecting to the MAC endpoint\n"); - kfree(mac); - return err; + goto err_close_mac; } priv->mac = mac;
return 0; + +err_close_mac: + dpaa2_mac_close(mac); +err_free_mac: + kfree(mac); + return err; }
static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv) @@ -4165,6 +4174,7 @@ static void dpaa2_eth_disconnect_mac(str return;
dpaa2_mac_disconnect(priv->mac); + dpaa2_mac_close(priv->mac); kfree(priv->mac); priv->mac = NULL; } --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c @@ -302,36 +302,20 @@ static void dpaa2_pcs_destroy(struct dpa
int dpaa2_mac_connect(struct dpaa2_mac *mac) { - struct fsl_mc_device *dpmac_dev = mac->mc_dev; struct net_device *net_dev = mac->net_dev; struct device_node *dpmac_node; struct phylink *phylink; - struct dpmac_attr attr; int err;
- err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id, - &dpmac_dev->mc_handle); - if (err || !dpmac_dev->mc_handle) { - netdev_err(net_dev, "dpmac_open() = %d\n", err); - return -ENODEV; - } - - err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle, &attr); - if (err) { - netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err); - goto err_close_dpmac; - } - - mac->if_link_type = attr.link_type; + mac->if_link_type = mac->attr.link_type;
- dpmac_node = dpaa2_mac_get_node(attr.id); + dpmac_node = dpaa2_mac_get_node(mac->attr.id); if (!dpmac_node) { - netdev_err(net_dev, "No dpmac@%d node found.\n", attr.id); - err = -ENODEV; - goto err_close_dpmac; + netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id); + return -ENODEV; }
- err = dpaa2_mac_get_if_mode(dpmac_node, attr); + err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr); if (err < 0) { err = -EINVAL; goto err_put_node; @@ -351,9 +335,9 @@ int dpaa2_mac_connect(struct dpaa2_mac * goto err_put_node; }
- if (attr.link_type == DPMAC_LINK_TYPE_PHY && - attr.eth_if != DPMAC_ETH_IF_RGMII) { - err = dpaa2_pcs_create(mac, dpmac_node, attr.id); + if (mac->attr.link_type == DPMAC_LINK_TYPE_PHY && + mac->attr.eth_if != DPMAC_ETH_IF_RGMII) { + err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id); if (err) goto err_put_node; } @@ -389,8 +373,7 @@ err_pcs_destroy: dpaa2_pcs_destroy(mac); err_put_node: of_node_put(dpmac_node); -err_close_dpmac: - dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle); + return err; }
@@ -402,8 +385,40 @@ void dpaa2_mac_disconnect(struct dpaa2_m phylink_disconnect_phy(mac->phylink); phylink_destroy(mac->phylink); dpaa2_pcs_destroy(mac); +} + +int dpaa2_mac_open(struct dpaa2_mac *mac) +{ + struct fsl_mc_device *dpmac_dev = mac->mc_dev; + struct net_device *net_dev = mac->net_dev; + int err;
- dpmac_close(mac->mc_io, 0, mac->mc_dev->mc_handle); + err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id, + &dpmac_dev->mc_handle); + if (err || !dpmac_dev->mc_handle) { + netdev_err(net_dev, "dpmac_open() = %d\n", err); + return -ENODEV; + } + + err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle, + &mac->attr); + if (err) { + netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err); + goto err_close_dpmac; + } + + return 0; + +err_close_dpmac: + dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle); + return err; +} + +void dpaa2_mac_close(struct dpaa2_mac *mac) +{ + struct fsl_mc_device *dpmac_dev = mac->mc_dev; + + dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle); }
static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = { --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h @@ -17,6 +17,7 @@ struct dpaa2_mac { struct dpmac_link_state state; struct net_device *net_dev; struct fsl_mc_io *mc_io; + struct dpmac_attr attr;
struct phylink_config phylink_config; struct phylink *phylink; @@ -28,6 +29,10 @@ struct dpaa2_mac { bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev, struct fsl_mc_io *mc_io);
+int dpaa2_mac_open(struct dpaa2_mac *mac); + +void dpaa2_mac_close(struct dpaa2_mac *mac); + int dpaa2_mac_connect(struct dpaa2_mac *mac);
void dpaa2_mac_disconnect(struct dpaa2_mac *mac);