[PATCH] mailbox: Convert to subsys_platform_driver()

["Peng Fan (OSS)" <peng.fan@oss.nxp.com>]

From: Peng Fan <peng.fan@nxp.com>

Replace the open-coded subsys_initcall()/module_exit() platform driver
registration with subsys_platform_driver().

No functional change.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/mailbox-xgene-slimpro.c | 13 +------------
 drivers/mailbox/mtk-cmdq-mailbox.c      | 13 +------------
 drivers/mailbox/zynqmp-ipi-mailbox.c    | 13 +------------
 3 files changed, 3 insertions(+), 36 deletions(-)

diff --git a/drivers/mailbox/mailbox-xgene-slimpro.c b/drivers/mailbox/mailbox-xgene-slimpro.c
index 1f87a84e5995..f489bcabceff 100644
--- a/drivers/mailbox/mailbox-xgene-slimpro.c
+++ b/drivers/mailbox/mailbox-xgene-slimpro.c
@@ -243,18 +243,7 @@ static struct platform_driver slimpro_mbox_driver = {
 	},
 };
 
-static int __init slimpro_mbox_init(void)
-{
-	return platform_driver_register(&slimpro_mbox_driver);
-}
-
-static void __exit slimpro_mbox_exit(void)
-{
-	platform_driver_unregister(&slimpro_mbox_driver);
-}
-
-subsys_initcall(slimpro_mbox_init);
-module_exit(slimpro_mbox_exit);
+subsys_platform_driver(slimpro_mbox_driver);
 
 MODULE_DESCRIPTION("APM X-Gene SLIMpro Mailbox Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index 96462ca84471..262832753fa5 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -875,18 +875,7 @@ static struct platform_driver cmdq_drv = {
 	}
 };
 
-static int __init cmdq_drv_init(void)
-{
-	return platform_driver_register(&cmdq_drv);
-}
-
-static void __exit cmdq_drv_exit(void)
-{
-	platform_driver_unregister(&cmdq_drv);
-}
-
-subsys_initcall(cmdq_drv_init);
-module_exit(cmdq_drv_exit);
+subsys_platform_driver(cmdq_drv);
 
 MODULE_DESCRIPTION("Mediatek Command Queue(CMDQ) Mailbox driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index 42d2583e44ca..da7d33435cdb 100644
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -1022,18 +1022,7 @@ static struct platform_driver zynqmp_ipi_driver = {
 		   .of_match_table = of_match_ptr(zynqmp_ipi_of_match),
 	},
 };
-
-static int __init zynqmp_ipi_init(void)
-{
-	return platform_driver_register(&zynqmp_ipi_driver);
-}
-subsys_initcall(zynqmp_ipi_init);
-
-static void __exit zynqmp_ipi_exit(void)
-{
-	platform_driver_unregister(&zynqmp_ipi_driver);
-}
-module_exit(zynqmp_ipi_exit);
+subsys_platform_driver(zynqmp_ipi_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Xilinx ZynqMP IPI Mailbox driver");
-- 
2.51.0