diff mbox series

[16/22] fb: omapfb/dsi-cm: Convert to platform remove callback returning void

Message ID 20231107091740.3924258-17-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted, archived
Headers show
Series fb: handle remove callbacks in .exit.text and convert to .remove_new | expand

Commit Message

Uwe Kleine-König Nov. 7, 2023, 9:17 a.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 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>
---
 drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
index 3d0978167144..adb8881bac28 100644
--- a/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
@@ -1241,7 +1241,7 @@  static int dsicm_probe(struct platform_device *pdev)
 	return r;
 }
 
-static int dsicm_remove(struct platform_device *pdev)
+static void dsicm_remove(struct platform_device *pdev)
 {
 	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
 	struct omap_dss_device *dssdev = &ddata->dssdev;
@@ -1269,8 +1269,6 @@  static int dsicm_remove(struct platform_device *pdev)
 
 	/* reset, to be sure that the panel is in a valid state */
 	dsicm_hw_reset(ddata);
-
-	return 0;
 }
 
 static const struct of_device_id dsicm_of_match[] = {
@@ -1282,7 +1280,7 @@  MODULE_DEVICE_TABLE(of, dsicm_of_match);
 
 static struct platform_driver dsicm_driver = {
 	.probe = dsicm_probe,
-	.remove = dsicm_remove,
+	.remove_new = dsicm_remove,
 	.driver = {
 		.name = "panel-dsi-cm",
 		.of_match_table = dsicm_of_match,