diff mbox series

[RFC,v3,07/18] ledtrig-blkdev: Add function to initialize gendisk ledtrig member

Message ID 20210819025053.222710-8-arequipeno@gmail.com
State New
Headers show
Series Add block device LED trigger | expand

Commit Message

Ian Pilcher Aug. 19, 2021, 2:50 a.m. UTC 
Ensures that gendisk ledtrig member is initialized to NULL, in case the
structure was not allocated with kzalloc() or equivalent

Signed-off-by: Ian Pilcher <arequipeno@gmail.com>
---
 include/linux/leds.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
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Patch

diff --git a/include/linux/leds.h b/include/linux/leds.h
index 329fd914cf24..6b67650d8797 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -10,6 +10,7 @@ 
 
 #include <dt-bindings/leds/common.h>
 #include <linux/device.h>
+#include <linux/genhd.h>
 #include <linux/kernfs.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
@@ -599,4 +600,19 @@  static inline void ledtrig_audio_set(enum led_audio type,
 }
 #endif
 
+#ifdef CONFIG_LEDS_TRIGGER_BLKDEV
+/**
+ * ledtrig_blkdev_disk_init - initialize the ledtrig field of a new gendisk
+ * @gd:	the gendisk to be initialized
+ */
+static inline void ledtrig_blkdev_disk_init(struct gendisk *const gd)
+{
+	gd->ledtrig = NULL;
+}
+#else	/* CONFIG_LEDS_TRIGGER_BLKDEV */
+static inline void ledtrig_blkdev_disk_init(const struct gendisk *gd)
+{
+}
+#endif	/* CONFIG_LEDS_TRIGGER_BLKDEV */
+
 #endif		/* __LINUX_LEDS_H_INCLUDED */