genwq: no need to check return value of debugfs_create functions

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: Frank Haverkamp <haver@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 30 insertions, 135 deletions

diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c
index 6f7e39f07811..3e319743e5a3 100644
--- a/drivers/misc/genwqe/card_debugfs.c
+++ b/drivers/misc/genwqe/card_debugfs.c
@@ -324,11 +324,9 @@ static int info_show(struct seq_file *s, void *unused)
 
 DEFINE_SHOW_ATTRIBUTE(info);
 
-int genwqe_init_debugfs(struct genwqe_dev *cd)
+void genwqe_init_debugfs(struct genwqe_dev *cd)
 {
 	struct dentry *root;
-	struct dentry *file;
-	int ret;
 	char card_name[64];
 	char name[64];
 	unsigned int i;
@@ -336,153 +334,50 @@ int genwqe_init_debugfs(struct genwqe_dev *cd)
 	sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
 
 	root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
-	if (!root) {
-		ret = -ENOMEM;
-		goto err0;
-	}
 
 	/* non privileged interfaces are done here */
-	file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd,
-				   &ddcb_info_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("info", S_IRUGO, root, cd,
-				   &info_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_u32("ddcb_software_timeout", 0666, root,
-				  &cd->ddcb_software_timeout);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_u32("kill_timeout", 0666, root,
-				  &cd->kill_timeout);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
+	debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops);
+	debugfs_create_file("info", S_IRUGO, root, cd, &info_fops);
+	debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
+	debugfs_create_u32("ddcb_software_timeout", 0666, root,
+			   &cd->ddcb_software_timeout);
+	debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout);
 
 	/* privileged interfaces follow here */
 	if (!genwqe_is_privileged(cd)) {
 		cd->debugfs_root = root;
-		return 0;
+		return;
 	}
 
-	file = debugfs_create_file("curr_regs", S_IRUGO, root, cd,
-				   &curr_regs_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
-				   &curr_dbg_uid0_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
-				   &curr_dbg_uid1_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
-				   &curr_dbg_uid2_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("prev_regs", S_IRUGO, root, cd,
-				   &prev_regs_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
-				   &prev_dbg_uid0_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
-				   &prev_dbg_uid1_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
-				   &prev_dbg_uid2_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
+	debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops);
+	debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
+			    &curr_dbg_uid0_fops);
+	debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
+			    &curr_dbg_uid1_fops);
+	debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
+			    &curr_dbg_uid2_fops);
+	debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops);
+	debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
+			    &prev_dbg_uid0_fops);
+	debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
+			    &prev_dbg_uid1_fops);
+	debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
+			    &prev_dbg_uid2_fops);
 
 	for (i = 0; i <  GENWQE_MAX_VFS; i++) {
 		sprintf(name, "vf%u_jobtimeout_msec", i);
-
-		file = debugfs_create_u32(name, 0666, root,
-					  &cd->vf_jobtimeout_msec[i]);
-		if (!file) {
-			ret = -ENOMEM;
-			goto err1;
-		}
+		debugfs_create_u32(name, 0666, root,
+				   &cd->vf_jobtimeout_msec[i]);
 	}
 
-	file = debugfs_create_file("jobtimer", S_IRUGO, root, cd,
-				   &jtimer_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
-				   &queue_working_time_fops);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_u32("skip_recovery", 0666, root,
-				  &cd->skip_recovery);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
-
-	file = debugfs_create_u32("use_platform_recovery", 0666, root,
-				  &cd->use_platform_recovery);
-	if (!file) {
-		ret = -ENOMEM;
-		goto err1;
-	}
+	debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops);
+	debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
+			    &queue_working_time_fops);
+	debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery);
+	debugfs_create_u32("use_platform_recovery", 0666, root,
+			   &cd->use_platform_recovery);
 
 	cd->debugfs_root = root;
-	return 0;
-err1:
-	debugfs_remove_recursive(root);
-err0:
-	return ret;
 }
 
 void genqwe_exit_debugfs(struct genwqe_dev *cd)