fbdev: omapfb/opa362: 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 ignored (apart
from emitting a warning) 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. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

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>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c b/drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c
index 866d71489358b3768accb5a61713c62fff260c05..f0d3eb581166bd3a66a5f4fcb8053a9c9abf9752 100644 (file)
--- a/drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c
@@ -231,7 +231,7 @@ err_reg:
        return r;
 }
 
-static int opa362_remove(struct platform_device *pdev)
+static void opa362_remove(struct platform_device *pdev)
 {
        struct panel_drv_data *ddata = platform_get_drvdata(pdev);
        struct omap_dss_device *dssdev = &ddata->dssdev;
@@ -248,8 +248,6 @@ static int opa362_remove(struct platform_device *pdev)
                opa362_disconnect(dssdev, dssdev->dst);
 
        omap_dss_put_device(in);
-
-       return 0;
 }
 
 static const struct of_device_id opa362_of_match[] = {
@@ -260,7 +258,7 @@ MODULE_DEVICE_TABLE(of, opa362_of_match);
 
 static struct platform_driver opa362_driver = {
        .probe  = opa362_probe,
-       .remove = opa362_remove,
+       .remove_new = opa362_remove,
        .driver = {
                .name   = "amplifier-opa362",
                .of_match_table = opa362_of_match,