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authorHeiner Kallweit <hkallweit1@gmail.com>2019-04-04 00:14:33 +0300
committerDavid S. Miller <davem@davemloft.net>2019-04-05 03:55:37 +0300
commita1deab17b2e9017e8a12e8b9e32ddda290f2b269 (patch)
tree153247f2aac85ae9a41dc41487bc82ce578b4b79 /drivers/net/phy
parente177163d36d531f7def3807a2ccf24ba3fe97624 (diff)
downloadlinux-a1deab17b2e9017e8a12e8b9e32ddda290f2b269.tar.xz
net: phy: allow a PHY driver to define neither features nor get_features
Meanwhile we have generic functions for reading the abilities of Clause 22 / 45 PHY's. This allows to use them as fallback in case callback get_features isn't set. Benefit is the reduction of boilerplate code in PHY drivers. v2: - adjust the comment in phy_driver_register to match the code Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/phy_device.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 72fc714c9427..f7a6d0ffb1ac 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2143,12 +2143,17 @@ static int phy_probe(struct device *dev)
*/
if (phydrv->features) {
linkmode_copy(phydev->supported, phydrv->features);
- } else {
+ } else if (phydrv->get_features) {
err = phydrv->get_features(phydev);
- if (err)
- goto out;
+ } else if (phydev->is_c45) {
+ err = genphy_c45_pma_read_abilities(phydev);
+ } else {
+ err = genphy_read_abilities(phydev);
}
+ if (err)
+ goto out;
+
of_set_phy_supported(phydev);
linkmode_copy(phydev->advertising, phydev->supported);
@@ -2216,11 +2221,11 @@ int phy_driver_register(struct phy_driver *new_driver, struct module *owner)
int retval;
/* Either the features are hard coded, or dynamically
- * determine. It cannot be both or neither
+ * determined. It cannot be both.
*/
- if (WARN_ON((!new_driver->features && !new_driver->get_features) ||
- (new_driver->features && new_driver->get_features))) {
- pr_err("%s: Driver features are missing\n", new_driver->name);
+ if (WARN_ON(new_driver->features && new_driver->get_features)) {
+ pr_err("%s: features and get_features must not both be set\n",
+ new_driver->name);
return -EINVAL;
}