fpga: altera-fpga2sdram: 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/017b9e17a0c88b2a633467633d304639e7765926.1703006638.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>

diff --git a/drivers/fpga/altera-fpga2sdram.c b/drivers/fpga/altera-fpga2sdram.c
index 1fa2ccc321abfc14ab6482377953037907836548..6b60ca004345deced18963c9feb6d6803653454c 100644 (file)
--- a/drivers/fpga/altera-fpga2sdram.c
+++ b/drivers/fpga/altera-fpga2sdram.c
@@ -147,20 +147,18 @@ static int alt_fpga_bridge_probe(struct platform_device *pdev)
        return ret;
 }
 
-static int alt_fpga_bridge_remove(struct platform_device *pdev)
+static void alt_fpga_bridge_remove(struct platform_device *pdev)
 {
        struct fpga_bridge *br = platform_get_drvdata(pdev);
 
        fpga_bridge_unregister(br);
-
-       return 0;
 }
 
 MODULE_DEVICE_TABLE(of, altera_fpga_of_match);
 
 static struct platform_driver altera_fpga_driver = {
        .probe = alt_fpga_bridge_probe,
-       .remove = alt_fpga_bridge_remove,
+       .remove_new = alt_fpga_bridge_remove,
        .driver = {
                .name   = "altera_fpga2sdram_bridge",
                .of_match_table = of_match_ptr(altera_fpga_of_match),