[PATCH] nvmem: imx-ocotp: Initialize in subsys_initcall

[Paul Geurts]

The i.MX OCOTP driver is implemented as module_platform_driver();,
which makes it initialize in device_initcall(). This means that all
drivers referencing the clock driver nodes in the device tree are
deferred by fw_devlink.

As the OCOTP driver is arch specific, but dependent on the i.MX clock
driver, which is also initialized in arch_initcall(), explicitly
initialize the driver in subsys_initcall(). This makes sure the drivers
depending on fuses defined by OCOTP, which are initialized in
device_initcall() are not deferred.

Fixes: 3edba6b47e42 ("nvmem: imx-ocotp: Add i.MX6 OCOTP driver")
Signed-off-by: Paul Geurts <paul.geurts@xxxxxxxxxxxxxxxxxxxxxxxxx>
---
 drivers/nvmem/imx-ocotp.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
index 108d78d7f6cb..9b1e7bb14ced 100644
--- a/drivers/nvmem/imx-ocotp.c
+++ b/drivers/nvmem/imx-ocotp.c
@@ -638,7 +638,18 @@ static struct platform_driver imx_ocotp_driver = {
 		.of_match_table = imx_ocotp_dt_ids,
 	},
 };
-module_platform_driver(imx_ocotp_driver);
+
+static int __init imx_ocotp_init(void)
+{
+	return platform_driver_register(&imx_ocotp_driver);
+}
+subsys_initcall(imx_ocotp_init);
+
+static void __exit imx_ocotp_exit(void)
+{
+	platform_driver_unregister(&imx_ocotp_driver);
+}
+module_exit(imx_ocotp_exit);
 
 MODULE_AUTHOR("Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>");
 MODULE_DESCRIPTION("i.MX6/i.MX7 OCOTP fuse box driver");
-- 
2.39.2