fpga: dfl-fme-br: 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>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/be0728ae8e047c6b443492dc563cf92f397b269d.1703006638.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>

diff --git a/drivers/fpga/dfl-fme-br.c b/drivers/fpga/dfl-fme-br.c
index 808d1f4d76df8f3f69569f598cc6ad1c9b73c47d..0b01b389527760933899f232ba33f3d726a3dc11 100644 (file)
--- a/drivers/fpga/dfl-fme-br.c
+++ b/drivers/fpga/dfl-fme-br.c
@@ -78,7 +78,7 @@ static int fme_br_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int fme_br_remove(struct platform_device *pdev)
+static void fme_br_remove(struct platform_device *pdev)
 {
        struct fpga_bridge *br = platform_get_drvdata(pdev);
        struct fme_br_priv *priv = br->priv;
@@ -89,8 +89,6 @@ static int fme_br_remove(struct platform_device *pdev)
                put_device(&priv->port_pdev->dev);
        if (priv->port_ops)
                dfl_fpga_port_ops_put(priv->port_ops);
-
-       return 0;
 }
 
 static struct platform_driver fme_br_driver = {
@@ -98,7 +96,7 @@ static struct platform_driver fme_br_driver = {
                .name    = DFL_FPGA_FME_BRIDGE,
        },
        .probe   = fme_br_probe,
-       .remove  = fme_br_remove,
+       .remove_new = fme_br_remove,
 };
 
 module_platform_driver(fme_br_driver);