As Greg KH explained in: https://lkml.org/lkml/2015/8/15/114
There no need to check the return value of debugfs_create_file/ debugfs_create_dir. This also fix static code checker warnings: drivers/platform/x86/intel_ips.c:1314 ips_debugfs_init() warn: passing zero to 'PTR_ERR' drivers/platform/x86/intel_ips.c:1328 ips_debugfs_init() warn: passing zero to 'PTR_ERR' Signed-off-by: YueHaibing <[email protected]> --- drivers/platform/x86/intel_ips.c | 21 +++------------------ 1 file changed, 3 insertions(+), 18 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 225638a..5c5dc82 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -1310,32 +1310,17 @@ static void ips_debugfs_init(struct ips_driver *ips) int i; ips->debug_root = debugfs_create_dir("ips", NULL); - if (!ips->debug_root) { - dev_err(ips->dev, "failed to create debugfs entries: %ld\n", - PTR_ERR(ips->debug_root)); - return; - } for (i = 0; i < ARRAY_SIZE(ips_debug_files); i++) { - struct dentry *ent; struct ips_debugfs_node *node = &ips_debug_files[i]; node->ips = ips; - ent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, - ips->debug_root, node, - &ips_debugfs_ops); - if (!ent) { - dev_err(ips->dev, "failed to create debug file: %ld\n", - PTR_ERR(ent)); - goto err_cleanup; - } + debugfs_create_file(node->name, S_IFREG | S_IRUGO, + ips->debug_root, node, + &ips_debugfs_ops); } return; - -err_cleanup: - ips_debugfs_cleanup(ips); - return; } #endif /* CONFIG_DEBUG_FS */ -- 2.7.0
