[PATCH v6 05/12] leds: cros_ec: Implement offloaded() trigger callback

[Rong Zhang <i@rong.moe>]

"chromeos-auto" is a private hardware control trigger which always stays
in hardware control. Implement offloaded() callback with its return
value to be always true to reflect this.

Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Ike Panhc <ikepanhc@gmail.com>
Signed-off-by: Rong Zhang <i@rong.moe>
---
Sashiko has reported this pre-existing issue in previous revisions:

- [High] Registering a global static `led_trigger` structure in a
  driver's probe function causes list corruption and lock re-
  initialization if the driver is probed multiple times.

The author is aware of it. Since the driver is very platform-specific
and the relevant platforms never have more than one such device, the bug
is never triggered on real devices. If a user manually binds the driver
to other devices, it's their fault. Therefore, fixing it is far beyond
the scope of the series.
---
 drivers/leds/leds-cros_ec.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/leds/leds-cros_ec.c b/drivers/leds/leds-cros_ec.c
index 1844d0cd5f52..6db83d015277 100644
--- a/drivers/leds/leds-cros_ec.c
+++ b/drivers/leds/leds-cros_ec.c
@@ -85,12 +85,18 @@ static int cros_ec_led_trigger_activate(struct led_classdev *led_cdev)
 	return cros_ec_led_send_cmd(priv->cros_ec, &arg);
 }
 
+static bool cros_ec_led_trigger_offloaded(struct led_classdev *led_cdev)
+{
+	return true;
+}
+
 static struct led_hw_trigger_type cros_ec_led_trigger_type;
 
 static struct led_trigger cros_ec_led_trigger = {
 	.name = "chromeos-auto",
 	.trigger_type = &cros_ec_led_trigger_type,
 	.activate = cros_ec_led_trigger_activate,
+	.offloaded = cros_ec_led_trigger_offloaded,
 };
 
 static int cros_ec_led_brightness_set_blocking(struct led_classdev *led_cdev,

-- 
2.55.0