nvmem: mediatek: Fix later provider initialization

Possibly, provider driver initialization is later than
consumer driver. Use function subsys_initcall to initialize
NVMEM provider early to ensure NVMEM consumer doesn't need
to -EPROBE_DEFER.

Signed-off-by: Andrew-CT Chen <andrew-ct.chen@mediatek.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 22 insertions, 1 deletions

diff --git a/drivers/nvmem/mtk-efuse.c b/drivers/nvmem/mtk-efuse.c
index 7b35f5b630cd..9c49369beea5 100644
--- a/drivers/nvmem/mtk-efuse.c
+++ b/drivers/nvmem/mtk-efuse.c
@@ -83,7 +83,28 @@ static struct platform_driver mtk_efuse_driver = {
                 .of_match_table = mtk_efuse_of_match,
         },
 };
-module_platform_driver(mtk_efuse_driver);
+
+static int __init mtk_efuse_init(void)
+{
+        int ret;
+
+        ret = platform_driver_register(&mtk_efuse_driver);
+        if (ret) {
+                pr_err("Failed to register efuse driver\n");
+                return ret;
+        }
+
+        return 0;
+}
+
+static void __exit mtk_efuse_exit(void)
+{
+        return platform_driver_unregister(&mtk_efuse_driver);
+}
+
+subsys_initcall(mtk_efuse_init);
+module_exit(mtk_efuse_exit);
+
 MODULE_AUTHOR("Andrew-CT Chen <andrew-ct.chen@mediatek.com>");
 MODULE_DESCRIPTION("Mediatek EFUSE driver");
 MODULE_LICENSE("GPL v2");