crypto: xilinx/zynqmp-sha - 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: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/xilinx/zynqmp-sha.c b/drivers/crypto/xilinx/zynqmp-sha.c
index b0dbf6263b0dbd9cced78bc62979fedd1253010d..1bcec6f46c9c755506a6c5af35ec7615d719ec35 100644 (file)
--- a/drivers/crypto/xilinx/zynqmp-sha.c
+++ b/drivers/crypto/xilinx/zynqmp-sha.c
@@ -237,20 +237,18 @@ err_shash:
        return err;
 }
 
-static int zynqmp_sha_remove(struct platform_device *pdev)
+static void zynqmp_sha_remove(struct platform_device *pdev)
 {
        sha3_drv_ctx.dev = platform_get_drvdata(pdev);
 
        dma_free_coherent(sha3_drv_ctx.dev, ZYNQMP_DMA_ALLOC_FIXED_SIZE, ubuf, update_dma_addr);
        dma_free_coherent(sha3_drv_ctx.dev, SHA3_384_DIGEST_SIZE, fbuf, final_dma_addr);
        crypto_unregister_shash(&sha3_drv_ctx.sha3_384);
-
-       return 0;
 }
 
 static struct platform_driver zynqmp_sha_driver = {
        .probe = zynqmp_sha_probe,
-       .remove = zynqmp_sha_remove,
+       .remove_new = zynqmp_sha_remove,
        .driver = {
                .name = "zynqmp-sha3-384",
        },