Commit 6e1a1282 authored by Russell King (Oracle)'s avatar Russell King (Oracle) Committed by Jakub Kicinski
Browse files

net: pcs: lynx: add lynx_pcs_create_fwnode() 



Add a helper to create a lynx PCS from a fwnode handle.

Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b3b984dc

drivers/net/pcs/pcs-lynx.c

+29 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/pcs-lynx.h

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 


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);