* [PATCH] mm/memblock: cast constant ULLONG_MAX to phys_addr_t
@ 2018-03-19 0:56 Stefan Agner
0 siblings, 0 replies; only message in thread
From: Stefan Agner @ 2018-03-19 0:56 UTC (permalink / raw)
To: akpm, mhocko, catalin.marinas
Cc: pasha.tatashin, ard.biesheuvel, linux-mm, linux-kernel, Stefan Agner
This fixes a warning shown when phys_addr_t is 32-bit int
when compiling with clang:
mm/memblock.c:927:15: warning: implicit conversion from 'unsigned long long'
to 'phys_addr_t' (aka 'unsigned int') changes value from
18446744073709551615 to 4294967295 [-Wconstant-conversion]
r->base : ULLONG_MAX;
^~~~~~~~~~
./include/linux/kernel.h:30:21: note: expanded from macro 'ULLONG_MAX'
#define ULLONG_MAX (~0ULL)
^~~~~
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
mm/memblock.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/memblock.c b/mm/memblock.c
index b6ba6b7adadc..696829a198ba 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -924,7 +924,7 @@ void __init_memblock __next_mem_range(u64 *idx, int nid, ulong flags,
r = &type_b->regions[idx_b];
r_start = idx_b ? r[-1].base + r[-1].size : 0;
r_end = idx_b < type_b->cnt ?
- r->base : ULLONG_MAX;
+ r->base : (phys_addr_t)ULLONG_MAX;
/*
* if idx_b advanced past idx_a,
@@ -1040,7 +1040,7 @@ void __init_memblock __next_mem_range_rev(u64 *idx, int nid, ulong flags,
r = &type_b->regions[idx_b];
r_start = idx_b ? r[-1].base + r[-1].size : 0;
r_end = idx_b < type_b->cnt ?
- r->base : ULLONG_MAX;
+ r->base : (phys_addr_t)ULLONG_MAX;
/*
* if idx_b advanced past idx_a,
* break out to advance idx_a
--
2.16.2
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2018-03-19 0:56 [PATCH] mm/memblock: cast constant ULLONG_MAX to phys_addr_t Stefan Agner
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