linux-kernel - [PATCH 02/20] mips: lantiq: copy built-in DTB out of init section

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Message-Id: <1396563423-30893-3-git-send-email-robherring2@gmail.com>
Date:	Thu,  3 Apr 2014 17:16:45 -0500
From:	Rob Herring <robherring2@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: [PATCH 02/20] mips: lantiq: copy built-in DTB out of init section

From: Rob Herring <robh@...nel.org>

The existing code is buggy because built-in DTBs are in init memory.
Fix this by using the unflatten_and_copy_device_tree function.

This removes all accesses to FDT header data by the arch code.

Signed-off-by: Rob Herring <robh@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
---
 arch/mips/lantiq/prom.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c
index 19686c5..cdea687 100644
--- a/arch/mips/lantiq/prom.c
+++ b/arch/mips/lantiq/prom.c
@@ -76,18 +76,7 @@ void __init plat_mem_setup(void)
 
 void __init device_tree_init(void)
 {
-	unsigned long base, size;
-
-	if (!initial_boot_params)
-		return;
-
-	base = virt_to_phys((void *)initial_boot_params);
-	size = be32_to_cpu(initial_boot_params->totalsize);
-
-	/* Before we do anything, lets reserve the dt blob */
-	reserve_bootmem(base, size, BOOTMEM_DEFAULT);
-
-	unflatten_device_tree();
+	unflatten_and_copy_device_tree();
 }
 
 void __init prom_init(void)
-- 
1.8.3.2

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