diff mbox series

[4/7] crypto: cavium: zip: no need to check return value of debugfs_create functions

Message ID 20190122151422.14204-5-gregkh@linuxfoundation.org (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series crypto: cleanup debugfs usage | expand

Commit Message

Greg Kroah-Hartman Jan. 22, 2019, 3:14 p.m. UTC 
When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Robert Richter <rrichter@cavium.com>
Cc: Jan Glauber <jglauber@cavium.com>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/crypto/cavium/zip/zip_main.c | 52 ++++++----------------------
 1 file changed, 11 insertions(+), 41 deletions(-)

Comments

Jan Glauber Jan. 23, 2019, 1:30 p.m. UTC | #1 
On Tue, Jan 22, 2019 at 04:14:19PM +0100, Greg Kroah-Hartman wrote:
> When calling debugfs functions, there is no need to ever check the
> return value.  The function can work or not, but the code logic should
> never do something different based on this.
> 
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Robert Richter <rrichter@cavium.com>
> Cc: Jan Glauber <jglauber@cavium.com>
> Cc: linux-crypto@vger.kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/crypto/cavium/zip/zip_main.c | 52 ++++++----------------------
>  1 file changed, 11 insertions(+), 41 deletions(-)

Reviewed-by: Jan Glauber <jglauber@cavium.com>

thanks,
Jan
diff mbox series

Patch

diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c
index be055b9547f6..e6b09e784e66 100644
--- a/drivers/crypto/cavium/zip/zip_main.c
+++ b/drivers/crypto/cavium/zip/zip_main.c
@@ -618,41 +618,23 @@  static const struct file_operations zip_regs_fops = {
 /* Root directory for thunderx_zip debugfs entry */
 static struct dentry *zip_debugfs_root;
 
-static int __init zip_debugfs_init(void)
+static void __init zip_debugfs_init(void)
 {
-	struct dentry *zip_stats, *zip_clear, *zip_regs;
-
 	if (!debugfs_initialized())
-		return -ENODEV;
+		return;
 
 	zip_debugfs_root = debugfs_create_dir("thunderx_zip", NULL);
-	if (!zip_debugfs_root)
-		return -ENOMEM;
 
 	/* Creating files for entries inside thunderx_zip directory */
-	zip_stats = debugfs_create_file("zip_stats", 0444,
-					zip_debugfs_root,
-					NULL, &zip_stats_fops);
-	if (!zip_stats)
-		goto failed_to_create;
-
-	zip_clear = debugfs_create_file("zip_clear", 0444,
-					zip_debugfs_root,
-					NULL, &zip_clear_fops);
-	if (!zip_clear)
-		goto failed_to_create;
-
-	zip_regs = debugfs_create_file("zip_regs", 0444,
-				       zip_debugfs_root,
-				       NULL, &zip_regs_fops);
-	if (!zip_regs)
-		goto failed_to_create;
+	debugfs_create_file("zip_stats", 0444, zip_debugfs_root, NULL,
+			    &zip_stats_fops);
 
-	return 0;
+	debugfs_create_file("zip_clear", 0444, zip_debugfs_root, NULL,
+			    &zip_clear_fops);
+
+	debugfs_create_file("zip_regs", 0444, zip_debugfs_root, NULL,
+			    &zip_regs_fops);
 
-failed_to_create:
-	debugfs_remove_recursive(zip_debugfs_root);
-	return -ENOENT;
 }
 
 static void __exit zip_debugfs_exit(void)
@@ -661,13 +643,8 @@  static void __exit zip_debugfs_exit(void)
 }
 
 #else
-static int __init zip_debugfs_init(void)
-{
-	return 0;
-}
-
+static void __init zip_debugfs_init(void) { }
 static void __exit zip_debugfs_exit(void) { }
-
 #endif
 /* debugfs - end */
 
@@ -691,17 +668,10 @@  static int __init zip_init_module(void)
 	}
 
 	/* comp-decomp statistics are handled with debugfs interface */
-	ret = zip_debugfs_init();
-	if (ret < 0) {
-		zip_err("ZIP: debugfs initialization failed\n");
-		goto err_crypto_unregister;
-	}
+	zip_debugfs_init();
 
 	return ret;
 
-err_crypto_unregister:
-	zip_unregister_compression_device();
-
 err_pci_unregister:
 	pci_unregister_driver(&zip_driver);
 	return ret;