powerpc: papr_scm: 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: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/34847d756453af2e85e5944a8cc2e2c21aacc905.1708529736.git.u.kleine-koenig@pengutronix.de

diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c
index 1a53e048ceb768f175237361018d6177092b4220..c233f9db039ba4a15a625c7b9593d62181a5356f 100644 (file)
--- a/arch/powerpc/platforms/pseries/papr_scm.c
+++ b/arch/powerpc/platforms/pseries/papr_scm.c
@@ -1521,7 +1521,7 @@ err:      kfree(p);
        return rc;
 }
 
-static int papr_scm_remove(struct platform_device *pdev)
+static void papr_scm_remove(struct platform_device *pdev)
 {
        struct papr_scm_priv *p = platform_get_drvdata(pdev);
 
@@ -1538,8 +1538,6 @@ static int papr_scm_remove(struct platform_device *pdev)
        pdev->archdata.priv = NULL;
        kfree(p->bus_desc.provider_name);
        kfree(p);
-
-       return 0;
 }
 
 static const struct of_device_id papr_scm_match[] = {
@@ -1550,7 +1548,7 @@ static const struct of_device_id papr_scm_match[] = {
 
 static struct platform_driver papr_scm_driver = {
        .probe = papr_scm_probe,
-       .remove = papr_scm_remove,
+       .remove_new = papr_scm_remove,
        .driver = {
                .name = "papr_scm",
                .of_match_table = papr_scm_match,