commit: 977cb76d52e7aa040e18a84b29fe6fd80d79319b
From: Florian Fainelli <[email protected]>
Date: Mon, 6 Jun 2011 10:15:49 +0200
Subject: [PATCH] x86: devicetree: Add missing early_init_dt_setup_initrd_arch
 stub

This patch fixes the following build failure:

drivers/built-in.o: In function `early_init_dt_check_for_initrd':
/home/florian/dev/kernel/x86/linux-2.6-x86/drivers/of/fdt.c:571:
undefined reference to `early_init_dt_setup_initrd_arch'
make: *** [.tmp_vmlinux1] Error 1

which happens as soon as we enable initrd support on a x86 devicetree
platform such as Intel CE4100.

Signed-off-by: Florian Fainelli <[email protected]>
Acked-by: Grant Likely <[email protected]>
Cc: Maxime Bizon <[email protected]>
Acked-by: Sebastian Andrzej Siewior <[email protected]>
Cc: [email protected] # 2.6.39
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
---
 arch/x86/kernel/devicetree.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index 690bc84..9aeb78a 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -13,6 +13,7 @@
 #include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/of_pci.h>
+#include <linux/initrd.h>
 
 #include <asm/hpet.h>
 #include <asm/irq_controller.h>
@@ -98,6 +99,16 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 
align)
        return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS));
 }
 
+#ifdef CONFIG_BLK_DEV_INITRD
+void __init early_init_dt_setup_initrd_arch(unsigned long start,
+                                           unsigned long end)
+{
+       initrd_start = (unsigned long)__va(start);
+       initrd_end = (unsigned long)__va(end);
+       initrd_below_start_ok = 1;
+}
+#endif
+
 void __init add_dtb(u64 data)
 {
        initial_dtb = data + offsetof(struct setup_data, data);

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