diff options
author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-06-07 12:58:29 +0100 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2023-06-08 19:19:50 -0700 |
commit | 6e1a12821d34ee37b1196872eccc7dc9b5218a87 (patch) | |
tree | 197c5ac2812c1576403be430d4031ec19616457b /drivers | |
parent | b3b984dc0ba60ce4787f661d8fc7f44e8953b51d (diff) |
net: pcs: lynx: add lynx_pcs_create_fwnode()
Add a helper to create a lynx PCS from a fwnode handle.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/pcs/pcs-lynx.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c index a90f74172f49..b0907c67d469 100644 --- a/drivers/net/pcs/pcs-lynx.c +++ b/drivers/net/pcs/pcs-lynx.c @@ -353,6 +353,35 @@ struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr) } EXPORT_SYMBOL(lynx_pcs_create_mdiodev); +struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node) +{ + struct mdio_device *mdio; + struct phylink_pcs *pcs; + + mdio = fwnode_mdio_find_device(node); + if (!mdio) + return ERR_PTR(-EPROBE_DEFER); + + pcs = lynx_pcs_create(mdio); + + /* Convert failure to create the PCS to an error pointer, so this + * function has a consistent return value strategy. + */ + if (!pcs) + pcs = ERR_PTR(-ENOMEM); + + /* 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. + */ + mdio_device_put(mdio); + + return pcs; +} +EXPORT_SYMBOL_GPL(lynx_pcs_create_fwnode); + void lynx_pcs_destroy(struct phylink_pcs *pcs) { struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs); |