regulator: Clean up debugfs error handling a bit

Use IS_ERR_OR_NULL() rather than open coding it and ignore errors from
failure to create the supply map.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 6c84520..81ea66d 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2712,7 +2712,7 @@ static void rdev_init_debugfs(struct regulator_dev *rdev)
 {
 #ifdef CONFIG_DEBUG_FS
        rdev->debugfs = debugfs_create_dir(rdev_get_name(rdev), debugfs_root);
-       if (IS_ERR(rdev->debugfs) || !rdev->debugfs) {
+       if (IS_ERR_OR_NULL(rdev->debugfs)) {
                rdev_warn(rdev, "Failed to create debugfs directory\n");
                rdev->debugfs = NULL;
                return;
@@ -3127,14 +3127,13 @@ static int __init regulator_init(void)
 
 #ifdef CONFIG_DEBUG_FS
        debugfs_root = debugfs_create_dir("regulator", NULL);
-       if (IS_ERR(debugfs_root) || !debugfs_root) {
+       if (IS_ERR_OR_NULL(debugfs_root)) {
                pr_warn("regulator: Failed to create debugfs directory\n");
                debugfs_root = NULL;
        }
 
-       if (IS_ERR(debugfs_create_file("supply_map", 0444, debugfs_root,
-                                      NULL, &supply_map_fops)))
-               pr_warn("regulator: Failed to create supplies debugfs\n");
+       debugfs_create_file("supply_map", 0444, debugfs_root, NULL,
+                           &supply_map_fops);
 #endif
 
        regulator_dummy_init();