linux/random.h, linux/sizes.h, linux/cdev.h, linux/fs.h, and
linux/workqueue.h are not used anywhere in this file; none of their
symbols appear in the source, and none are needed transitively either
(debugfs helpers come from linux/debugfs.h, the async worker uses
kthread_run()/kthread_stop() rather than the workqueue API).

Verified by removing the five includes and rebuilding
drivers/staging/greybus out-of-tree with W=1: no new warnings or
errors, and checkpatch.pl reports the same warning/check count before
and after.

Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Batu Ada Tutkun <batuadatutkun@gmail.com>
---
 drivers/staging/greybus/loopback.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c
index ea57b1f5d156..1169cfcd28c6 100644
--- a/drivers/staging/greybus/loopback.c
+++ b/drivers/staging/greybus/loopback.c
@@ -14,15 +14,10 @@
 #include <linux/slab.h>
 #include <linux/kthread.h>
 #include <linux/delay.h>
-#include <linux/random.h>
-#include <linux/sizes.h>
-#include <linux/cdev.h>
-#include <linux/fs.h>
 #include <linux/kfifo.h>
 #include <linux/debugfs.h>
 #include <linux/list_sort.h>
 #include <linux/spinlock.h>
-#include <linux/workqueue.h>
 #include <linux/atomic.h>
 #include <linux/pm_runtime.h>
 #include <linux/greybus.h>
-- 
2.53.0

On Wed, Aug 12, 2026 at 09:03:54PM +0300, Batu Ada Tutkun wrote:
> linux/random.h, linux/sizes.h, linux/cdev.h, linux/fs.h, and
> linux/workqueue.h are not used anywhere in this file; none of their
> symbols appear in the source, and none are needed transitively either
> (debugfs helpers come from linux/debugfs.h, the async worker uses
> kthread_run()/kthread_stop() rather than the workqueue API).
> 
> Verified by removing the five includes and rebuilding
> drivers/staging/greybus out-of-tree with W=1: no new warnings or
> errors, and checkpatch.pl reports the same warning/check count before
> and after.
> 
> Assisted-by: Claude:claude-sonnet-4-6
> Signed-off-by: Batu Ada Tutkun <batuadatutkun@gmail.com>
> ---
>  drivers/staging/greybus/loopback.c | 5 -----
>  1 file changed, 5 deletions(-)

Please read:
	https://lore.kernel.org/all/2026080354-skater-urgent-31b2@gregkh