diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 32 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fman/fman_memac.c | 18 | ||||
| -rw-r--r-- | drivers/net/pcs/pcs-lynx.c | 54 | ||||
| -rw-r--r-- | include/linux/pcs-lynx.h | 4 |
4 files changed, 58 insertions, 50 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c index cb70855e2b9a..d860d9fe73af 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c @@ -247,8 +247,8 @@ static int dpaa2_pcs_create(struct dpaa2_mac *mac, struct fwnode_handle *dpmac_node, int id) { - struct mdio_device *mdiodev; struct fwnode_handle *node; + struct phylink_pcs *pcs; node = fwnode_find_reference(dpmac_node, "pcs-handle", 0); if (IS_ERR(node)) { @@ -257,26 +257,27 @@ static int dpaa2_pcs_create(struct dpaa2_mac *mac, return 0; } - if (!fwnode_device_is_available(node)) { - netdev_err(mac->net_dev, "pcs-handle node not available\n"); - fwnode_handle_put(node); - return -ENODEV; - } - - mdiodev = fwnode_mdio_find_device(node); + pcs = lynx_pcs_create_fwnode(node); fwnode_handle_put(node); - if (!mdiodev) { + + if (pcs == ERR_PTR(-EPROBE_DEFER)) { netdev_dbg(mac->net_dev, "missing PCS device\n"); return -EPROBE_DEFER; } - mac->pcs = lynx_pcs_create(mdiodev); - if (!mac->pcs) { - netdev_err(mac->net_dev, "lynx_pcs_create() failed\n"); - mdio_device_free(mdiodev); - return -ENOMEM; + if (pcs == ERR_PTR(-ENODEV)) { + netdev_err(mac->net_dev, "pcs-handle node not available\n"); + return PTR_ERR(pcs); + } + + if (IS_ERR(pcs)) { + netdev_err(mac->net_dev, + "lynx_pcs_create_fwnode() failed: %pe\n", pcs); + return PTR_ERR(pcs); } + mac->pcs = pcs; + return 0; } @@ -285,10 +286,7 @@ static void dpaa2_pcs_destroy(struct dpaa2_mac *mac) struct phylink_pcs *phylink_pcs = mac->pcs; if (phylink_pcs) { - struct mdio_device *mdio = lynx_get_mdio_device(phylink_pcs); - lynx_pcs_destroy(phylink_pcs); - mdio_device_free(mdio); mac->pcs = NULL; } } diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c index 625c79d5636f..3b75cc543be9 100644 --- a/drivers/net/ethernet/freescale/fman/fman_memac.c +++ b/drivers/net/ethernet/freescale/fman/fman_memac.c @@ -976,14 +976,10 @@ static int memac_init(struct fman_mac *memac) static void pcs_put(struct phylink_pcs *pcs) { - struct mdio_device *mdiodev; - if (IS_ERR_OR_NULL(pcs)) return; - mdiodev = lynx_get_mdio_device(pcs); lynx_pcs_destroy(pcs); - mdio_device_free(mdiodev); } static int memac_free(struct fman_mac *memac) @@ -1043,20 +1039,14 @@ static struct phylink_pcs *memac_pcs_create(struct device_node *mac_node, int index) { struct device_node *node; - struct mdio_device *mdiodev = NULL; struct phylink_pcs *pcs; node = of_parse_phandle(mac_node, "pcsphy-handle", index); - if (node && of_device_is_available(node)) - mdiodev = of_mdio_find_device(node); - of_node_put(node); + if (!node) + return ERR_PTR(-ENODEV); - if (!mdiodev) - return ERR_PTR(-EPROBE_DEFER); - - pcs = lynx_pcs_create(mdiodev); - if (!pcs) - mdio_device_free(mdiodev); + pcs = lynx_pcs_create_fwnode(of_fwnode_handle(node)); + of_node_put(node); return pcs; } diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c index f04dc580ffb8..fca48ebf0b81 100644 --- a/drivers/net/pcs/pcs-lynx.c +++ b/drivers/net/pcs/pcs-lynx.c @@ -6,6 +6,7 @@ #include <linux/mdio.h> #include <linux/phylink.h> #include <linux/pcs-lynx.h> +#include <linux/property.h> #define SGMII_CLOCK_PERIOD_NS 8 /* PCS is clocked at 125 MHz */ #define LINK_TIMER_VAL(ns) ((u32)((ns) / SGMII_CLOCK_PERIOD_NS)) @@ -34,14 +35,6 @@ enum sgmii_speed { #define phylink_pcs_to_lynx(pl_pcs) container_of((pl_pcs), struct lynx_pcs, pcs) #define lynx_to_phylink_pcs(lynx) (&(lynx)->pcs) -struct mdio_device *lynx_get_mdio_device(struct phylink_pcs *pcs) -{ - struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs); - - return lynx->mdio; -} -EXPORT_SYMBOL(lynx_get_mdio_device); - static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs, struct phylink_link_state *state) { @@ -315,13 +308,13 @@ static const struct phylink_pcs_ops lynx_pcs_phylink_ops = { .pcs_link_up = lynx_pcs_link_up, }; -struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio) +static struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio) { struct lynx_pcs *lynx; lynx = kzalloc(sizeof(*lynx), GFP_KERNEL); if (!lynx) - return NULL; + return ERR_PTR(-ENOMEM); mdio_device_get(mdio); lynx->mdio = mdio; @@ -330,7 +323,6 @@ struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio) return lynx_to_phylink_pcs(lynx); } -EXPORT_SYMBOL(lynx_pcs_create); struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr) { @@ -343,11 +335,41 @@ struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr) pcs = lynx_pcs_create(mdio); - /* Convert failure to create the PCS to an error pointer, so this - * function has a consistent return value strategy. + /* lynx_create() has taken a refcount on the mdiodev if it was + * successful. If lynx_create() fails, this will free the mdio + * device here. In any case, we don't need to hold our reference + * anymore, and putting it here will allow mdio_device_put() in + * lynx_destroy() to automatically free the mdio device. */ - if (!pcs) - pcs = ERR_PTR(-ENOMEM); + mdio_device_put(mdio); + + return pcs; +} +EXPORT_SYMBOL(lynx_pcs_create_mdiodev); + +/* + * lynx_pcs_create_fwnode() creates a lynx PCS instance from the fwnode + * device indicated by node. + * + * Returns: + * -ENODEV if the fwnode is marked unavailable + * -EPROBE_DEFER if we fail to find the device + * -ENOMEM if we fail to allocate memory + * pointer to a phylink_pcs on success + */ +struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node) +{ + struct mdio_device *mdio; + struct phylink_pcs *pcs; + + if (!fwnode_device_is_available(node)) + return ERR_PTR(-ENODEV); + + mdio = fwnode_mdio_find_device(node); + if (!mdio) + return ERR_PTR(-EPROBE_DEFER); + + pcs = lynx_pcs_create(mdio); /* lynx_create() has taken a refcount on the mdiodev if it was * successful. If lynx_create() fails, this will free the mdio @@ -359,7 +381,7 @@ struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr) return pcs; } -EXPORT_SYMBOL(lynx_pcs_create_mdiodev); +EXPORT_SYMBOL_GPL(lynx_pcs_create_fwnode); void lynx_pcs_destroy(struct phylink_pcs *pcs) { diff --git a/include/linux/pcs-lynx.h b/include/linux/pcs-lynx.h index 885b59d10581..7958cccd16f2 100644 --- a/include/linux/pcs-lynx.h +++ b/include/linux/pcs-lynx.h @@ -9,10 +9,8 @@ #include <linux/mdio.h> #include <linux/phylink.h> -struct mdio_device *lynx_get_mdio_device(struct phylink_pcs *pcs); - -struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio); struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr); +struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node); void lynx_pcs_destroy(struct phylink_pcs *pcs); |