[PATCH v2 05/17] h8300, nds32, openrisc: simplify detection of memory extents

[Mike Rapoport]

From: Mike Rapoport <r...@linux.ibm.com>

Instead of traversing memblock.memory regions to find memory_start and
memory_end, simply query memblock_{start,end}_of_DRAM().

Signed-off-by: Mike Rapoport <r...@linux.ibm.com>
Acked-by: Stafford Horne <sho...@gmail.com>
---
 arch/h8300/kernel/setup.c    | 8 +++-----
 arch/nds32/kernel/setup.c    | 8 ++------
 arch/openrisc/kernel/setup.c | 9 ++-------
 3 files changed, 7 insertions(+), 18 deletions(-)

diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c
index 28ac88358a89..0281f92eea3d 100644
--- a/arch/h8300/kernel/setup.c
+++ b/arch/h8300/kernel/setup.c
@@ -74,17 +74,15 @@ static void __init bootmem_init(void)
        memory_end = memory_start = 0;
 
        /* Find main memory where is the kernel */
-       for_each_memblock(memory, region) {
-               memory_start = region->base;
-               memory_end = region->base + region->size;
-       }
+       memory_start = memblock_start_of_DRAM();
+       memory_end = memblock_end_of_DRAM();
 
        if (!memory_end)
                panic("No memory!");
 
        /* setup bootmem globals (we use no_bootmem, but mm still depends on 
this) */
        min_low_pfn = PFN_UP(memory_start);
-       max_low_pfn = PFN_DOWN(memblock_end_of_DRAM());
+       max_low_pfn = PFN_DOWN(memory_end);
        max_pfn = max_low_pfn;
 
        memblock_reserve(__pa(_stext), _end - _stext);
diff --git a/arch/nds32/kernel/setup.c b/arch/nds32/kernel/setup.c
index a066efbe53c0..c356e484dcab 100644
--- a/arch/nds32/kernel/setup.c
+++ b/arch/nds32/kernel/setup.c
@@ -249,12 +249,8 @@ static void __init setup_memory(void)
        memory_end = memory_start = 0;
 
        /* Find main memory where is the kernel */
-       for_each_memblock(memory, region) {
-               memory_start = region->base;
-               memory_end = region->base + region->size;
-               pr_info("%s: Memory: 0x%x-0x%x\n", __func__,
-                       memory_start, memory_end);
-       }
+       memory_start = memblock_start_of_DRAM();
+       memory_end = memblock_end_of_DRAM();
 
        if (!memory_end) {
                panic("No memory!");
diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
index 8aa438e1f51f..c5706153d3b6 100644
--- a/arch/openrisc/kernel/setup.c
+++ b/arch/openrisc/kernel/setup.c
@@ -48,17 +48,12 @@ static void __init setup_memory(void)
        unsigned long ram_start_pfn;
        unsigned long ram_end_pfn;
        phys_addr_t memory_start, memory_end;
-       struct memblock_region *region;
 
        memory_end = memory_start = 0;
 
        /* Find main memory where is the kernel, we assume its the only one */
-       for_each_memblock(memory, region) {
-               memory_start = region->base;
-               memory_end = region->base + region->size;
-               printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__,
-                      memory_start, memory_end);
-       }
+       memory_start = memblock_start_of_DRAM();
+       memory_end = memblock_end_of_DRAM();
 
        if (!memory_end) {
                panic("No memory!");
-- 
2.26.2

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