mailbox: zynqmp-ipi: 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>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index a512e2405111d9f99e5fabd0eef4cabd721b2aaf..25c65afc030a3577c2a51bf820c6b86ffe920f85 100644 (file)
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -687,19 +687,17 @@ static int zynqmp_ipi_probe(struct platform_device *pdev)
        return ret;
 }
 
-static int zynqmp_ipi_remove(struct platform_device *pdev)
+static void zynqmp_ipi_remove(struct platform_device *pdev)
 {
        struct zynqmp_ipi_pdata *pdata;
 
        pdata = platform_get_drvdata(pdev);
        zynqmp_ipi_free_mboxes(pdata);
-
-       return 0;
 }
 
 static struct platform_driver zynqmp_ipi_driver = {
        .probe = zynqmp_ipi_probe,
-       .remove = zynqmp_ipi_remove,
+       .remove_new = zynqmp_ipi_remove,
        .driver = {
                   .name = "zynqmp-ipi",
                   .of_match_table = of_match_ptr(zynqmp_ipi_of_match),