[PATCH 2/3] tpm/tpm_tis: Convert to platform remove callback returning void

["Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>]

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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/char/tpm/tpm_tis.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index ed5dabd3c72d..fe2b889cd13d 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -324,14 +324,12 @@ static int tpm_tis_plat_probe(struct platform_device *pdev)
 	return tpm_tis_init(&pdev->dev, &tpm_info);
 }
 
-static int tpm_tis_plat_remove(struct platform_device *pdev)
+static void tpm_tis_plat_remove(struct platform_device *pdev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);
 
 	tpm_chip_unregister(chip);
 	tpm_tis_remove(chip);
-
-	return 0;
 }
 
 #ifdef CONFIG_OF
@@ -344,7 +342,7 @@ MODULE_DEVICE_TABLE(of, tis_of_platform_match);
 
 static struct platform_driver tis_drv = {
 	.probe = tpm_tis_plat_probe,
-	.remove = tpm_tis_plat_remove,
+	.remove_new = tpm_tis_plat_remove,
 	.driver = {
 		.name		= "tpm_tis",
 		.pm		= &tpm_tis_pm,
-- 
2.39.2