drm/imx/dcss: Convert to platform remove callback returning void

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.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231102165640.3307820-27-u.kleine-koenig@pengutronix.de

diff --git a/drivers/gpu/drm/imx/dcss/dcss-drv.c b/drivers/gpu/drm/imx/dcss/dcss-drv.c
index b61cec0cc79d9ec5ee46bbb7d84d5ecdba16bc9e..ad5f29ea8f6a156c3b7fc7022ecf723a83277ae7 100644 (file)
--- a/drivers/gpu/drm/imx/dcss/dcss-drv.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-drv.c
@@ -80,7 +80,7 @@ err:
        return err;
 }
 
-static int dcss_drv_platform_remove(struct platform_device *pdev)
+static void dcss_drv_platform_remove(struct platform_device *pdev)
 {
        struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev);
 
@@ -88,8 +88,6 @@ static int dcss_drv_platform_remove(struct platform_device *pdev)
        dcss_dev_destroy(mdrv->dcss);
 
        kfree(mdrv);
-
-       return 0;
 }
 
 static void dcss_drv_platform_shutdown(struct platform_device *pdev)
@@ -120,7 +118,7 @@ MODULE_DEVICE_TABLE(of, dcss_of_match);
 
 static struct platform_driver dcss_platform_driver = {
        .probe  = dcss_drv_platform_probe,
-       .remove = dcss_drv_platform_remove,
+       .remove_new = dcss_drv_platform_remove,
        .shutdown = dcss_drv_platform_shutdown,
        .driver = {
                .name = "imx-dcss",