[PATCH 01/13] staging: greybus: camera: no need to check debugfs return values

[Greg Kroah-Hartman]

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.

Clean up the greybus camera driver by not caring about the value of
debugfs calls.  This ends up removing a number of lines of code that
are not needed.

Cc: Johan Hovold <johan at kernel.org>
Cc: Alex Elder <elder at kernel.org>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: greybus-dev at lists.linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 drivers/staging/greybus/camera.c | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/drivers/staging/greybus/camera.c b/drivers/staging/greybus/camera.c
index 07ebfb88db9b..341f729a9779 100644
--- a/drivers/staging/greybus/camera.c
+++ b/drivers/staging/greybus/camera.c
@@ -1174,11 +1174,6 @@ static int gb_camera_debugfs_init(struct gb_camera *gcam)
 		 gcam->bundle->id);
 
 	gcam->debugfs.root = debugfs_create_dir(dirname, gb_debugfs_get());
-	if (IS_ERR(gcam->debugfs.root)) {
-		gcam_err(gcam, "debugfs root create failed (%ld)\n",
-			 PTR_ERR(gcam->debugfs.root));
-		return PTR_ERR(gcam->debugfs.root);
-	}
 
 	gcam->debugfs.buffers = vmalloc(sizeof(*gcam->debugfs.buffers) *
 					GB_CAMERA_DEBUGFS_BUFFER_MAX);
@@ -1188,18 +1183,12 @@ static int gb_camera_debugfs_init(struct gb_camera *gcam)
 	for (i = 0; i < ARRAY_SIZE(gb_camera_debugfs_entries); ++i) {
 		const struct gb_camera_debugfs_entry *entry =
 			&gb_camera_debugfs_entries[i];
-		struct dentry *dentry;
 
 		gcam->debugfs.buffers[i].length = 0;
 
-		dentry = debugfs_create_file(entry->name, entry->mask,
-					     gcam->debugfs.root, gcam,
-					     &gb_camera_debugfs_ops);
-		if (IS_ERR(dentry)) {
-			gcam_err(gcam,
-				 "debugfs operation %s create failed (%ld)\n",
-				 entry->name, PTR_ERR(dentry));
-			return PTR_ERR(dentry);
+		debugfs_create_file(entry->name, entry->mask,
+				    gcam->debugfs.root, gcam,
+				    &gb_camera_debugfs_ops);
 		}
 	}
 
-- 
2.17.0