linux-kernel - [PATCH 2/3] MIPS: Remove redundant definitions of device_tree

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Message-Id: <1646895012-3143-3-git-send-email-yangtiezhu@loongson.cn>
Date:   Thu, 10 Mar 2022 14:50:11 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Xuefeng Li <lixuefeng@...ngson.cn>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] MIPS: Remove redundant definitions of device_tree_init()

There exists many same definitions of device_tree_init() for various
platforms, add a weak function in arch/mips/kernel/prom.c to clean
up the related code.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/mips/ath79/setup.c          |  5 -----
 arch/mips/kernel/prom.c          |  5 +++++
 arch/mips/lantiq/prom.c          |  5 -----
 arch/mips/loongson64/setup.c     |  5 -----
 arch/mips/mti-malta/Makefile     |  1 -
 arch/mips/mti-malta/malta-dt.c   | 15 ---------------
 arch/mips/pic32/pic32mzda/init.c |  5 -----
 arch/mips/ralink/of.c            |  5 -----
 8 files changed, 5 insertions(+), 41 deletions(-)
 delete mode 100644 arch/mips/mti-malta/malta-dt.c

diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 45d4d71..4e18cdc 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -269,8 +269,3 @@ void __init arch_init_irq(void)
 {
 	irqchip_init();
 }
-
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
index 6abebd5..7db6ff9 100644
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -64,4 +64,9 @@ int __init __dt_register_buses(const char *bus0, const char *bus1)
 	return 0;
 }
 
+void __weak __init device_tree_init(void)
+{
+	unflatten_and_copy_device_tree();
+}
+
 #endif
diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c
index bc9f58f..c731082a 100644
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -84,11 +84,6 @@ void __init plat_mem_setup(void)
 	__dt_setup_arch(dtb);
 }
 
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
-
 void __init prom_init(void)
 {
 	/* call the soc specific detetcion code and get it to fill soc_info */
diff --git a/arch/mips/loongson64/setup.c b/arch/mips/loongson64/setup.c
index 1973eb0..3cd11c2 100644
--- a/arch/mips/loongson64/setup.c
+++ b/arch/mips/loongson64/setup.c
@@ -36,8 +36,3 @@ void __init plat_mem_setup(void)
 	if (loongson_fdt_blob)
 		__dt_setup_arch(loongson_fdt_blob);
 }
-
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile
index 94c11f5..13bbd12 100644
--- a/arch/mips/mti-malta/Makefile
+++ b/arch/mips/mti-malta/Makefile
@@ -6,7 +6,6 @@
 # Copyright (C) 2008 Wind River Systems, Inc.
 #   written by Ralf Baechle <ralf@...ux-mips.org>
 #
-obj-y				+= malta-dt.o
 obj-y				+= malta-dtshim.o
 obj-y				+= malta-init.o
 obj-y				+= malta-int.o
diff --git a/arch/mips/mti-malta/malta-dt.c b/arch/mips/mti-malta/malta-dt.c
deleted file mode 100644
index d045c91..0000000
--- a/arch/mips/mti-malta/malta-dt.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2015 Imagination Technologies
- * Author: Paul Burton <paul.burton@...s.com>
- */
-
-#include <linux/clk-provider.h>
-#include <linux/init.h>
-#include <linux/of_fdt.h>
-#include <linux/of_platform.h>
-
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
diff --git a/arch/mips/pic32/pic32mzda/init.c b/arch/mips/pic32/pic32mzda/init.c
index a1860f2..1299156 100644
--- a/arch/mips/pic32/pic32mzda/init.c
+++ b/arch/mips/pic32/pic32mzda/init.c
@@ -78,11 +78,6 @@ void __init prom_init(void)
 	pic32_init_cmdline((int)fw_arg0, (char **)fw_arg1);
 }
 
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
-
 static struct pic32_sdhci_platform_data sdhci_data = {
 	.setup_dma = pic32_set_sdhci_adma_fifo_threshold,
 };
diff --git a/arch/mips/ralink/of.c b/arch/mips/ralink/of.c
index 35a87a2..587c7b9 100644
--- a/arch/mips/ralink/of.c
+++ b/arch/mips/ralink/of.c
@@ -48,11 +48,6 @@ __iomem void *plat_of_remap_node(const char *node)
 	return ioremap(res.start, resource_size(&res));
 }
 
-void __init device_tree_init(void)
-{
-	unflatten_and_copy_device_tree();
-}
-
 void __init plat_mem_setup(void)
 {
 	void *dtb;
-- 
2.1.0