diff mbox series

[5/8] platform: x86: samsung-laptop: no need to check return value of debugfs_create functions

Message ID 20190612121258.19535-5-gregkh@linuxfoundation.org (mailing list archive)
State Accepted, archived
Delegated to: Andy Shevchenko
Headers show
Series [1/8] platform: x86: acer-wmi: no need to check return value of debugfs_create functions | expand

Commit Message

Greg Kroah-Hartman June 12, 2019, 12:12 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: Corentin Chary <corentin.chary@gmail.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andy Shevchenko <andy@infradead.org>
Cc: platform-driver-x86@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/platform/x86/samsung-laptop.c | 89 +++++++--------------------
 1 file changed, 23 insertions(+), 66 deletions(-)
diff mbox series

Patch

diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index 7b160ee98115..e84f11398c1b 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -1280,15 +1280,12 @@  static void samsung_debugfs_exit(struct samsung_laptop *samsung)
 	debugfs_remove_recursive(samsung->debug.root);
 }
 
-static int samsung_debugfs_init(struct samsung_laptop *samsung)
+static void samsung_debugfs_init(struct samsung_laptop *samsung)
 {
-	struct dentry *dent;
+	struct dentry *root;
 
-	samsung->debug.root = debugfs_create_dir("samsung-laptop", NULL);
-	if (!samsung->debug.root) {
-		pr_err("failed to create debugfs directory");
-		goto error_debugfs;
-	}
+	root = debugfs_create_dir("samsung-laptop", NULL);
+	samsung->debug.root = root;
 
 	samsung->debug.f0000_wrapper.data = samsung->f0000_segment;
 	samsung->debug.f0000_wrapper.size = 0xffff;
@@ -1299,60 +1296,24 @@  static int samsung_debugfs_init(struct samsung_laptop *samsung)
 	samsung->debug.sdiag_wrapper.data = samsung->sdiag;
 	samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag);
 
-	dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR,
-				  samsung->debug.root, &samsung->debug.command);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_u32("d0", S_IRUGO | S_IWUSR, samsung->debug.root,
-				  &samsung->debug.data.d0);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_u32("d1", S_IRUGO | S_IWUSR, samsung->debug.root,
-				  &samsung->debug.data.d1);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_u16("d2", S_IRUGO | S_IWUSR, samsung->debug.root,
-				  &samsung->debug.data.d2);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_u8("d3", S_IRUGO | S_IWUSR, samsung->debug.root,
-				 &samsung->debug.data.d3);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_blob("data", S_IRUGO | S_IWUSR,
-				   samsung->debug.root,
-				   &samsung->debug.data_wrapper);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR,
-				   samsung->debug.root,
-				   &samsung->debug.f0000_wrapper);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_file("call", S_IFREG | S_IRUGO,
-				   samsung->debug.root, samsung,
-				   &samsung_laptop_call_fops);
-	if (!dent)
-		goto error_debugfs;
-
-	dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR,
-				   samsung->debug.root,
-				   &samsung->debug.sdiag_wrapper);
-	if (!dent)
-		goto error_debugfs;
-
-	return 0;
-
-error_debugfs:
-	samsung_debugfs_exit(samsung);
-	return -ENOMEM;
+	debugfs_create_u16("command", S_IRUGO | S_IWUSR, root,
+			   &samsung->debug.command);
+	debugfs_create_u32("d0", S_IRUGO | S_IWUSR, root,
+			   &samsung->debug.data.d0);
+	debugfs_create_u32("d1", S_IRUGO | S_IWUSR, root,
+			   &samsung->debug.data.d1);
+	debugfs_create_u16("d2", S_IRUGO | S_IWUSR, root,
+			   &samsung->debug.data.d2);
+	debugfs_create_u8("d3", S_IRUGO | S_IWUSR, root,
+			  &samsung->debug.data.d3);
+	debugfs_create_blob("data", S_IRUGO | S_IWUSR, root,
+			    &samsung->debug.data_wrapper);
+	debugfs_create_blob("f0000_segment", S_IRUSR | S_IWUSR, root,
+			    &samsung->debug.f0000_wrapper);
+	debugfs_create_file("call", S_IFREG | S_IRUGO, root, samsung,
+			    &samsung_laptop_call_fops);
+	debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR, root,
+			    &samsung->debug.sdiag_wrapper);
 }
 
 static void samsung_sabi_exit(struct samsung_laptop *samsung)
@@ -1745,9 +1706,7 @@  static int __init samsung_init(void)
 	if (ret)
 		goto error_lid_handling;
 
-	ret = samsung_debugfs_init(samsung);
-	if (ret)
-		goto error_debugfs;
+	samsung_debugfs_init(samsung);
 
 	samsung->pm_nb.notifier_call = samsung_pm_notification;
 	register_pm_notifier(&samsung->pm_nb);
@@ -1755,8 +1714,6 @@  static int __init samsung_init(void)
 	samsung_platform_device = samsung->platform_device;
 	return ret;
 
-error_debugfs:
-	samsung_lid_handling_exit(samsung);
 error_lid_handling:
 	samsung_leds_exit(samsung);
 error_leds: