4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ivan Gorinov <ivan.gorinov@xxxxxxxxx>
[ Upstream commit 628df9dc5ad886b0a9b33c75a7b09710eb859ca1 ]
Commit 08d53aa58cb1 added CRC32 calculation in early_init_dt_verify() and
checking in late initcall of_fdt_raw_init(), making early_init_dt_verify()
mandatory.
The required call to early_init_dt_verify() was not added to the
x86-specific implementation, causing failure to create the sysfs entry in
of_fdt_raw_init().
Fixes: 08d53aa58cb1 ("of/fdt: export fdt blob as /sys/firmware/fdt")
Signed-off-by: Ivan Gorinov <ivan.gorinov@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/c8c7e941efc63b5d25ebf9b6350b0f3df38f6098.1520450752.git.ivan.gorinov@xxxxxxxxx
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/devicetree.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -11,6 +11,7 @@
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/of_irq.h>
+#include <linux/libfdt.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/of_pci.h>
@@ -276,14 +277,15 @@ static void __init x86_flattree_get_conf
map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128);
- initial_boot_params = dt = early_memremap(initial_dtb, map_len);
- size = of_get_flat_dt_size();
+ dt = early_memremap(initial_dtb, map_len);
+ size = fdt_totalsize(dt);
if (map_len < size) {
early_memunmap(dt, map_len);
- initial_boot_params = dt = early_memremap(initial_dtb, size);
+ dt = early_memremap(initial_dtb, size);
map_len = size;
}
+ early_init_dt_verify(dt);
unflatten_and_copy_device_tree();
early_memunmap(dt, map_len);
}
