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[15/51] video: fbdev: ffb: Convert to platform remove callback returning void

Message ID 20230318235428.272091-16-u.kleine-koenig@pengutronix.de (mailing list archive)
State In Next
Headers show
Series video: fbdev: Convert to platform remove callback returning void | expand

Commit Message

Uwe Kleine-König March 18, 2023, 11:53 p.m. UTC 
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/video/fbdev/ffb.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/video/fbdev/ffb.c b/drivers/video/fbdev/ffb.c
index 7cba3969a970..c6d3111dcbb0 100644
--- a/drivers/video/fbdev/ffb.c
+++ b/drivers/video/fbdev/ffb.c
@@ -1023,7 +1023,7 @@  static int ffb_probe(struct platform_device *op)
 	return err;
 }
 
-static int ffb_remove(struct platform_device *op)
+static void ffb_remove(struct platform_device *op)
 {
 	struct fb_info *info = dev_get_drvdata(&op->dev);
 	struct ffb_par *par = info->par;
@@ -1035,8 +1035,6 @@  static int ffb_remove(struct platform_device *op)
 	of_iounmap(&op->resource[1], par->dac, sizeof(struct ffb_dac));
 
 	framebuffer_release(info);
-
-	return 0;
 }
 
 static const struct of_device_id ffb_match[] = {
@@ -1056,7 +1054,7 @@  static struct platform_driver ffb_driver = {
 		.of_match_table = ffb_match,
 	},
 	.probe		= ffb_probe,
-	.remove		= ffb_remove,
+	.remove_new	= ffb_remove,
 };
 
 static int __init ffb_init(void)