linux-kernel - [PATCH 1/3] parport: Remove 'drivers' list

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Date: Thu,  2 May 2024 16:48:21 +0100
From: linux@...blig.org
To: sudipm.mukherjee@...il.com
Cc: arnd@...db.de,
	linux-kernel@...r.kernel.org,
	linux-parport@...ts.infradead.org,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH 1/3] parport: Remove 'drivers' list

From: "Dr. David Alan Gilbert" <linux@...blig.org>

The list has been empty since:
 'commit 3275158fa52a ("parport: remove use of devmodel")'

This also means we can remove the 'list_head' from
struct parport_driver.

Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
 drivers/parport/share.c | 9 ---------
 include/linux/parport.h | 1 -
 2 files changed, 10 deletions(-)

diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 49c74ded8a53c..7849c25a8967a 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -49,8 +49,6 @@ static DEFINE_SPINLOCK(parportlist_lock);
 static LIST_HEAD(all_ports);
 static DEFINE_SPINLOCK(full_list_lock);
 
-static LIST_HEAD(drivers);
-
 static DEFINE_MUTEX(registration_lock);
 
 /* What you can do to a port that's gone away.. */
@@ -165,10 +163,6 @@ static int driver_check(struct device_driver *dev_drv, void *_port)
 static void attach_driver_chain(struct parport *port)
 {
 	/* caller has exclusive registration_lock */
-	struct parport_driver *drv;
-
-	list_for_each_entry(drv, &drivers, list)
-		drv->attach(port);
 
 	/*
 	 * call the driver_check function of the drivers registered in
@@ -191,10 +185,7 @@ static int driver_detach(struct device_driver *_drv, void *_port)
 /* Call detach(port) for each registered driver. */
 static void detach_driver_chain(struct parport *port)
 {
-	struct parport_driver *drv;
 	/* caller has exclusive registration_lock */
-	list_for_each_entry(drv, &drivers, list)
-		drv->detach(port);
 
 	/*
 	 * call the detach function of the drivers registered in
diff --git a/include/linux/parport.h b/include/linux/parport.h
index fff39bc306290..2a4424b601565 100644
--- a/include/linux/parport.h
+++ b/include/linux/parport.h
@@ -258,7 +258,6 @@ struct parport_driver {
 	int (*probe)(struct pardevice *);
 	struct device_driver driver;
 	bool devmodel;
-	struct list_head list;
 };
 
 #define to_parport_driver(n) container_of(n, struct parport_driver, driver)
-- 
2.44.0