linux-kernel - [RFC PATCH v3 10/18] block: Call LED trigger init/cleanup functions

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Date:   Wed, 18 Aug 2021 21:50:45 -0500
From:   Ian Pilcher <arequipeno@...il.com>
To:     linux-block@...r.kernel.org, linux-leds@...r.kernel.org
Cc:     axboe@...nel.dk, pavel@....cz, kabel@...nel.org,
        linux-kernel@...r.kernel.org, kernelnewbies@...nelnewbies.org
Subject: [RFC PATCH v3 10/18] block: Call LED trigger init/cleanup functions

Call ledtrig_blkdev_disk_init() from __device_add_disk() to ensure that
gendisk's ledtrig field is initialized

Call ledtrig_blkdev_disk_cleanup() from del_gendisk() to clean up any
references to the device from the block device LED trigger

Signed-off-by: Ian Pilcher <arequipeno@...il.com>
---
 block/genhd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/block/genhd.c b/block/genhd.c
index e6d7bb709d62..091b954ddab3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -24,6 +24,7 @@
 #include <linux/log2.h>
 #include <linux/pm_runtime.h>
 #include <linux/badblocks.h>
+#include <linux/leds.h>
 
 #include "blk.h"
 
@@ -539,6 +540,7 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk,
 
 	disk_add_events(disk);
 	blk_integrity_add(disk);
+	ledtrig_blkdev_disk_init(disk);
 }
 
 void device_add_disk(struct device *parent, struct gendisk *disk,
@@ -581,6 +583,7 @@ void del_gendisk(struct gendisk *disk)
 	if (WARN_ON_ONCE(!disk->queue))
 		return;
 
+	ledtrig_blkdev_disk_cleanup(disk);
 	blk_integrity_del(disk);
 	disk_del_events(disk);
 
-- 
2.31.1