[PATCH 4.9 053/134] fdt: Properly handle "no-map" field in the memory region

From: KarimAllah Ahmed <redacted>

[ Upstream commit 86588296acbfb1591e92ba60221e95677ecadb43 ]

Mark the memory region with NOMAP flag instead of completely removing it
from the memory blocks. That makes the FDT handling consistent with the EFI
memory map handling.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <redacted>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: KarimAllah Ahmed <redacted>
Signed-off-by: Quentin Perret <redacted>
Link: https://lore.kernel.org/r/20210115114544.1830068-2-qperret@google.com (local)
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/of/fdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index e9360d5cbcbac..f90b626269ab6 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c

@@ -1159,7 +1159,7 @@ int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
 					phys_addr_t size, bool nomap)
 {
 	if (nomap)
-		return memblock_remove(base, size);
+		return memblock_mark_nomap(base, size);
 	return memblock_reserve(base, size);
 }
 

-- 
2.27.0