linux-kernel - [PATCH 12/18] mfd: tps80031: Make it explicitly non-modular

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Date:   Fri, 7 Dec 2018 15:10:59 -0500
From:   Paul Gortmaker <paul.gortmaker@...driver.com>
To:     Lee Jones <lee.jones@...aro.org>
CC:     <linux-kernel@...r.kernel.org>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Laxman Dewangan <ldewangan@...dia.com>
Subject: [PATCH 12/18] mfd: tps80031: Make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/mfd/Kconfig:config MFD_TPS80031
drivers/mfd/Kconfig:    bool "TI TPS80031/TPS80032 Power Management chips"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_init was not in use by this code, the init ordering
remains unchanged with this commit.

We don't replace module.h with init.h since the file already has that.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Lee Jones <lee.jones@...aro.org>
Cc: Laxman Dewangan <ldewangan@...dia.com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 drivers/mfd/tps80031.c | 37 ++-----------------------------------
 1 file changed, 2 insertions(+), 35 deletions(-)

diff --git a/drivers/mfd/tps80031.c b/drivers/mfd/tps80031.c
index 608c7f77830e..865257ade8ac 100644
--- a/drivers/mfd/tps80031.c
+++ b/drivers/mfd/tps80031.c
@@ -30,7 +30,6 @@
 #include <linux/irq.h>
 #include <linux/mfd/core.h>
 #include <linux/mfd/tps80031.h>
-#include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
@@ -516,40 +515,18 @@ static int tps80031_probe(struct i2c_client *client,
 	return ret;
 }
 
-static int tps80031_remove(struct i2c_client *client)
-{
-	struct tps80031 *tps80031 = i2c_get_clientdata(client);
-	int i;
-
-	if (tps80031_power_off_dev == tps80031) {
-		tps80031_power_off_dev = NULL;
-		pm_power_off = NULL;
-	}
-
-	mfd_remove_devices(tps80031->dev);
-
-	regmap_del_irq_chip(client->irq, tps80031->irq_data);
-
-	for (i = 0; i < TPS80031_NUM_SLAVES; i++) {
-		if (tps80031->clients[i] != client)
-			i2c_unregister_device(tps80031->clients[i]);
-	}
-	return 0;
-}
-
 static const struct i2c_device_id tps80031_id_table[] = {
 	{ "tps80031", TPS80031 },
 	{ "tps80032", TPS80032 },
 	{ }
 };
-MODULE_DEVICE_TABLE(i2c, tps80031_id_table);
 
 static struct i2c_driver tps80031_driver = {
 	.driver	= {
-		.name	= "tps80031",
+		.name			= "tps80031",
+		.suppress_bind_attrs	= true,
 	},
 	.probe		= tps80031_probe,
-	.remove		= tps80031_remove,
 	.id_table	= tps80031_id_table,
 };
 
@@ -558,13 +535,3 @@ static int __init tps80031_init(void)
 	return i2c_add_driver(&tps80031_driver);
 }
 subsys_initcall(tps80031_init);
-
-static void __exit tps80031_exit(void)
-{
-	i2c_del_driver(&tps80031_driver);
-}
-module_exit(tps80031_exit);
-
-MODULE_AUTHOR("Laxman Dewangan <ldewangan@...dia.com>");
-MODULE_DESCRIPTION("TPS80031 core driver");
-MODULE_LICENSE("GPL v2");
-- 
2.7.4