[net-next PATCH v2 2/3] net: phy: add simple helper to return count of supported speeds

Christian Marangi
2023-12-14T22:38:36Z

Add simple helper to return count of supported speeds for the passed PHY
device.

This can be useful to know the number of speed modes to dynamically
allocate a speed array for it.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
drivers/net/phy/phy.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index a5fa077650e8..311560e72126 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -229,6 +229,18 @@ phy_find_valid(int speed, int duplex, unsigned long *supported)
return phy_lookup_setting(speed, duplex, supported, false);
}

+/**
+ * phy_supported_speeds_num - return the number of all speeds currently
+ * supported by a phy device
+ * @phy: The phy device to return supported speeds of.
+ *
+ * Description: Returns the number of supported speeds.
+ */
+unsigned int phy_supported_speeds_num(struct phy_device *phy)
+{
+ return phy_speeds(NULL, 0, phy->supported);
+}
+
/**
* phy_supported_speeds - return all speeds currently supported by a phy device
* @phy: The phy device to return supported speeds of.
--
2.40.1