crypto: hisilicon - no need to check return value of debugfs_create functions

[linux-2.6-microblaze.git] / drivers / crypto / hisilicon / zip / zip_main.c

diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c
index f764f05..e1bab1a 100644 (file)
--- a/drivers/crypto/hisilicon/zip/zip_main.c
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -547,7 +547,7 @@ static int hisi_zip_core_debug_init(struct hisi_zip_ctrl *ctrl)
        struct hisi_qm *qm = &hisi_zip->qm;
        struct device *dev = &qm->pdev->dev;
        struct debugfs_regset32 *regset;
-       struct dentry *tmp_d, *tmp;
+       struct dentry *tmp_d;
        char buf[HZIP_BUF_SIZE];
        int i;
 
@@ -557,10 +557,6 @@ static int hisi_zip_core_debug_init(struct hisi_zip_ctrl *ctrl)
                else
                        sprintf(buf, "decomp_core%d", i - HZIP_COMP_CORE_NUM);
 
-               tmp_d = debugfs_create_dir(buf, ctrl->debug_root);
-               if (!tmp_d)
-                       return -ENOENT;
-
                regset = devm_kzalloc(dev, sizeof(*regset), GFP_KERNEL);
                if (!regset)
                        return -ENOENT;
@@ -569,9 +565,8 @@ static int hisi_zip_core_debug_init(struct hisi_zip_ctrl *ctrl)
                regset->nregs = ARRAY_SIZE(hzip_dfx_regs);
                regset->base = qm->io_base + core_offsets[i];
 
-               tmp = debugfs_create_regset32("regs", 0444, tmp_d, regset);
-               if (!tmp)
-                       return -ENOENT;
+               tmp_d = debugfs_create_dir(buf, ctrl->debug_root);
+               debugfs_create_regset32("regs", 0444, tmp_d, regset);
        }
 
        return 0;
@@ -579,7 +574,6 @@ static int hisi_zip_core_debug_init(struct hisi_zip_ctrl *ctrl)
 
 static int hisi_zip_ctrl_debug_init(struct hisi_zip_ctrl *ctrl)
 {
-       struct dentry *tmp;
        int i;
 
        for (i = HZIP_CURRENT_QM; i < HZIP_DEBUG_FILE_NUM; i++) {
@@ -587,11 +581,9 @@ static int hisi_zip_ctrl_debug_init(struct hisi_zip_ctrl *ctrl)
                ctrl->files[i].ctrl = ctrl;
                ctrl->files[i].index = i;
 
-               tmp = debugfs_create_file(ctrl_debug_file_name[i], 0600,
-                                         ctrl->debug_root, ctrl->files + i,
-                                         &ctrl_debug_fops);
-               if (!tmp)
-                       return -ENOENT;
+               debugfs_create_file(ctrl_debug_file_name[i], 0600,
+                                   ctrl->debug_root, ctrl->files + i,
+                                   &ctrl_debug_fops);
        }
 
        return hisi_zip_core_debug_init(ctrl);
@@ -605,8 +597,6 @@ static int hisi_zip_debugfs_init(struct hisi_zip *hisi_zip)
        int ret;
 
        dev_d = debugfs_create_dir(dev_name(dev), hzip_debugfs_root);
-       if (!dev_d)
-               return -ENOENT;
 
        qm->debug.debug_root = dev_d;
        ret = hisi_qm_debug_init(qm);
@@ -1001,8 +991,6 @@ static void hisi_zip_register_debugfs(void)
                return;
 
        hzip_debugfs_root = debugfs_create_dir("hisi_zip", NULL);
-       if (IS_ERR_OR_NULL(hzip_debugfs_root))
-               hzip_debugfs_root = NULL;
 }
 
 static void hisi_zip_unregister_debugfs(void)