[PATCH -next v3] drm/i2c: tda998x: remove redundant CONFIG_OF and of_match_ptr()

[PATCH -next v3] drm/i2c: tda998x: remove redundant CONFIG_OF and of_match_ptr()

[Zhu Wang]

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@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

---
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.
---
 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

Re: [PATCH -next v3] drm/i2c: tda998x: remove redundant CONFIG_OF and of_match_ptr()

[Andy Shevchenko]

On Wed, Aug 02, 2023 at 03:42:04PM +0800, Zhu Wang wrote:
> 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@huawei.com>
> Reviewed-by: Arnd Bergmann <arnd@arndb.de>

> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

I haven't given you any tag, why is this line here?!

-- 
With Best Regards,
Andy Shevchenko