Commit 4567d686f5c6d955 ("phy: increase size of MII_BUS_ID_SIZE and bus_id") increased the size of MII bus IDs, but forgot to update the private definition in <linux/phy_led_triggers.h>. This may cause: 1. Truncation of LED trigger names, 2. Duplicate LED trigger names, 3. Failures registering LED triggers, 4. Crashes due to bad error handling in the LED trigger failure path. To fix this, and prevent the definitions going out of sync again in the future, let the PHY LED trigger code use the existing MII_BUS_ID_SIZE definition. Example: - Before I had triggers "ee700000.etherne:01:100Mbps" and "ee700000.etherne:01:10Mbps", - After the increase of MII_BUS_ID_SIZE, both became "ee700000.ethernet-ffffffff:01:" => FAIL, - Now, the triggers are "ee700000.ethernet-ffffffff:01:100Mbps" and "ee700000.ethernet-ffffffff:01:10Mbps", which are unique again.
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| @@ -18,11 +18,11 @@ struct phy_device; · 17 unmodified lines | ||
| 18 | 18 | #ifdef CONFIG_LED_TRIGGER_PHY |
| 19 | 19 | |
| 20 | 20 | #include <linux/leds.h> |
| 21 | +#include <linux/phy.h> | |
| 21 | 22 | |
| 22 | 23 | #define PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE 10 |
| 23 | −#define PHY_MII_BUS_ID_SIZE (20 - 3) | |
| 24 | 24 | |
| 25 | −#define PHY_LINK_LED_TRIGGER_NAME_SIZE (PHY_MII_BUS_ID_SIZE + \ | |
| 25 | +#define PHY_LINK_LED_TRIGGER_NAME_SIZE (MII_BUS_ID_SIZE + \ | |
| 26 | 26 | FIELD_SIZEOF(struct mdio_device, addr)+\ |
| 27 | 27 | PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE) |
| 28 | 28 | |