[PATCH 13/18] ledtrig-blkdev: Add function to disassociate a device from all LEDs

Ian Pilcher
2021-09-03T20:46:16Z

Called when block device is being removed

Called via __ledtrig_blkdev_disk_cleanup function pointer from
ledtrig_blkdev_disk_cleanup() in ledtrig-blkdev-core.c

Signed-off-by: Ian Pilcher <arequipeno@gmail.com>
---
drivers/leds/trigger/ledtrig-blkdev.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/drivers/leds/trigger/ledtrig-blkdev.c b/drivers/leds/trigger/ledtrig-blkdev.c
index 7edbc48050a5..1be9de431c08 100644
--- a/drivers/leds/trigger/ledtrig-blkdev.c
+++ b/drivers/leds/trigger/ledtrig-blkdev.c
@@ -465,3 +465,20 @@ static void blkdev_disk_delete(struct ledtrig_blkdev_led *const led,
exit_unlock:
mutex_unlock(&ledtrig_blkdev_mutex);
}
+
+
+/*
+ *
+ * Disassociate all LEDs from a block device (because it's going away)
+ *
+ */
+
+static void blkdev_disk_cleanup(struct gendisk *const gd)
+{
+ struct ledtrig_blkdev_link *link;
+ struct hlist_node *next;
+
+ hlist_for_each_entry_safe(link, next,
+ &gd->ledtrig->leds, disk_leds_node)
+ blkdev_disk_del_locked(link->led, link, gd->ledtrig);
+}
--
2.31.1