diff mbox series

[net-next,v4,3/3] net: phy: led: dynamically allocate speed modes array

Message ID 20231216161206.1729-4-ansuelsmth@gmail.com
State New
Headers
Series net: add define to describe link speed modes |

Commit Message

Christian Marangi Dec. 16, 2023, 4:12 p.m. UTC 
  Instead of defining a big enough array for speed modes use the newly
introduced API to get the actual number of supported speed modes and
dynamically allocate them.

Allocated space is freed at the end of the LED register loop.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/net/phy/phy_led_triggers.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/phy/phy_led_triggers.c b/drivers/net/phy/phy_led_triggers.c
index f550576eb9da..3b962ec13d90 100644
--- a/drivers/net/phy/phy_led_triggers.c
+++ b/drivers/net/phy/phy_led_triggers.c
@@ -83,14 +83,21 @@  static void phy_led_trigger_unregister(struct phy_led_trigger *plt)
 
 int phy_led_triggers_register(struct phy_device *phy)
 {
+	unsigned int *speeds;
 	int i, err;
-	unsigned int speeds[50];
 
-	phy->phy_num_led_triggers = phy_supported_speeds(phy, speeds,
-							 ARRAY_SIZE(speeds));
+	phy->phy_num_led_triggers = phy_supported_speeds_num(phy);
 	if (!phy->phy_num_led_triggers)
 		return 0;
 
+	speeds = kmalloc_array(phy->phy_num_led_triggers, sizeof(*speeds),
+			       GFP_KERNEL);
+	if (!speeds)
+		return -ENOMEM;
+
+	/* Presence of speed modes already checked up */
+	phy_supported_speeds(phy, speeds, phy->phy_num_led_triggers);
+
 	phy->led_link_trigger = devm_kzalloc(&phy->mdio.dev,
 					     sizeof(*phy->led_link_trigger),
 					     GFP_KERNEL);
@@ -123,6 +130,8 @@  int phy_led_triggers_register(struct phy_device *phy)
 	phy->last_triggered = NULL;
 	phy_led_trigger_change_speed(phy);
 
+	kfree(speeds);
+
 	return 0;
 out_unreg:
 	while (i--)
@@ -134,6 +143,7 @@  int phy_led_triggers_register(struct phy_device *phy)
 	devm_kfree(&phy->mdio.dev, phy->led_link_trigger);
 	phy->led_link_trigger = NULL;
 out_clear:
+	kfree(speeds);
 	phy->phy_num_led_triggers = 0;
 	return err;
 }