linux-kernel - [PATCH -next v4] drm/i2c: tda998x: remove redundant CONFIG_OF and of_match

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Message-ID: <20230804110625.98520-1-wangzhu9@huawei.com>
Date:   Fri, 4 Aug 2023 19:06:25 +0800
From:   Zhu Wang <wangzhu9@...wei.com>
To:     <linux@...linux.org.uk>, <airlied@...il.com>, <daniel@...ll.ch>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
CC:     <wangzhu9@...wei.com>
Subject: [PATCH -next v4] drm/i2c: tda998x: remove redundant CONFIG_OF and of_match_ptr()

The driver depends on CONFIG_OF, so it is not necessary to use CONFIG_OF
and of_match_ptr() here, we remove them all.

Even for drivers that do not depend on CONFIG_OF, it's almost always
better to leave out the of_match_ptr(), since the only thing it can
possibly do is to save a few bytes of .text if a driver can be used both
with and without it.

Signed-off-by: Zhu Wang <wangzhu9@...wei.com>
Reviewed-by: Arnd Bergmann <arnd@...db.de>

---
Changes in v2:
- Remove CONFIG_OF which includes tda998x_ids.

---
Changes in v3:
- Changes of_match_ptr to of_match_ptr() in the commit message.

---
Changes in v4:
- Remove "Reviewed-by: Andy Shevchenko".
---
 drivers/gpu/drm/i2c/tda998x_drv.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index d8d7de18dd65..9666e0746240 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -2084,13 +2084,11 @@ static void tda998x_remove(struct i2c_client *client)
 	tda998x_destroy(&client->dev);
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id tda998x_dt_ids[] = {
 	{ .compatible = "nxp,tda998x", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
-#endif
 
 static const struct i2c_device_id tda998x_ids[] = {
 	{ "tda998x", 0 },
@@ -2103,7 +2101,7 @@ static struct i2c_driver tda998x_driver = {
 	.remove = tda998x_remove,
 	.driver = {
 		.name = "tda998x",
-		.of_match_table = of_match_ptr(tda998x_dt_ids),
+		.of_match_table = tda998x_dt_ids,
 	},
 	.id_table = tda998x_ids,
 };
-- 
2.17.1