diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/818-v6.5-09-leds-trigger-netdev-validate-configured-netdev.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/818-v6.5-09-leds-trigger-netdev-validate-configured-netdev.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/818-v6.5-09-leds-trigger-netdev-validate-configured-netdev.patch b/target/linux/generic/backport-5.15/818-v6.5-09-leds-trigger-netdev-validate-configured-netdev.patch new file mode 100644 index 0000000000..c129ffa4f5 --- /dev/null +++ b/target/linux/generic/backport-5.15/818-v6.5-09-leds-trigger-netdev-validate-configured-netdev.patch @@ -0,0 +1,58 @@ +From 33ec0b53befff2c0a7f3aa19ff08556d60585d6b Mon Sep 17 00:00:00 2001 +From: Andrew Lunn <andrew@lunn.ch> +Date: Mon, 29 May 2023 18:32:39 +0200 +Subject: [PATCH 09/13] leds: trigger: netdev: validate configured netdev + +The netdev which the LED should blink for is configurable in +/sys/class/led/foo/device_name. Ensure when offloading that the +configured netdev is the same as the netdev the LED is associated +with. If it is not, only perform software blinking. + +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/leds/trigger/ledtrig-netdev.c | 24 ++++++++++++++++++++++-- + 1 file changed, 22 insertions(+), 2 deletions(-) + +--- a/drivers/leds/trigger/ledtrig-netdev.c ++++ b/drivers/leds/trigger/ledtrig-netdev.c +@@ -110,6 +110,24 @@ static bool supports_hw_control(struct l + return !strcmp(led_cdev->hw_control_trigger, led_cdev->trigger->name); + } + ++/* ++ * Validate the configured netdev is the same as the one associated with ++ * the LED driver in hw control. ++ */ ++static bool validate_net_dev(struct led_classdev *led_cdev, ++ struct net_device *net_dev) ++{ ++ struct device *dev = led_cdev->hw_control_get_device(led_cdev); ++ struct net_device *ndev; ++ ++ if (!dev) ++ return false; ++ ++ ndev = to_net_dev(dev); ++ ++ return ndev == net_dev; ++} ++ + static bool can_hw_control(struct led_netdev_data *trigger_data) + { + unsigned long default_interval = msecs_to_jiffies(NETDEV_LED_DEFAULT_INTERVAL); +@@ -131,9 +149,11 @@ static bool can_hw_control(struct led_ne + /* + * net_dev must be set with hw control, otherwise no + * blinking can be happening and there is nothing to +- * offloaded. ++ * offloaded. Additionally, for hw control to be ++ * valid, the configured netdev must be the same as ++ * netdev associated to the LED. + */ +- if (!trigger_data->net_dev) ++ if (!validate_net_dev(led_cdev, trigger_data->net_dev)) + return false; + + /* Check if the requested mode is supported */ |