crypto: tegra - 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.

Fixes: 0880bb3b00c8 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/tegra/tegra-se-main.c b/drivers/crypto/tegra/tegra-se-main.c
index f4758e3206157becd6fb10b77d4d787f8b0970a7..9955874b3dc37d1748491aec758abdfb39535cb7 100644 (file)
--- a/drivers/crypto/tegra/tegra-se-main.c
+++ b/drivers/crypto/tegra/tegra-se-main.c
@@ -320,7 +320,7 @@ static int tegra_se_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int tegra_se_remove(struct platform_device *pdev)
+static void tegra_se_remove(struct platform_device *pdev)
 {
        struct tegra_se *se = platform_get_drvdata(pdev);
 
@@ -328,8 +328,6 @@ static int tegra_se_remove(struct platform_device *pdev)
        crypto_engine_exit(se->engine);
        iommu_fwspec_free(se->dev);
        host1x_client_unregister(&se->client);
-
-       return 0;
 }
 
 static const struct tegra_se_regs tegra234_aes1_regs = {
@@ -390,7 +388,7 @@ static struct platform_driver tegra_se_driver = {
                .of_match_table = tegra_se_of_match,
        },
        .probe          = tegra_se_probe,
-       .remove         = tegra_se_remove,
+       .remove_new     = tegra_se_remove,
 };
 
 static int tegra_se_host1x_probe(struct host1x_device *dev)