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| author | Arnd Bergmann <arnd@arndb.de> | 2017-11-02 15:20:31 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2017-11-06 14:59:19 +0300 |
| commit | fe9c0589eeef4b3edbaad9f7500679a2eeafe951 (patch) | |
| tree | d2315231c3ee527497cb8c6d18d45a35c878e983 /arch/arm/mm/pmsa-v7.c | |
| parent | 216218308cfb0939aeecb246b34faf6e179c8d57 (diff) | |
| download | linux-fe9c0589eeef4b3edbaad9f7500679a2eeafe951.tar.xz | |
ARM: 8719/1: NOMMU: work around maybe-uninitialized warning
The reworked MPU code produces a new warning in some configurations,
presumably starting with the code move after the compiler now makes
different inlining decisions:
arch/arm/mm/pmsa-v7.c: In function 'adjust_lowmem_bounds_mpu':
arch/arm/mm/pmsa-v7.c:310:5: error: 'specified_mem_size' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This appears to be harmless, as we know that there is always at
least one memblock, and the only way this could get triggered is
if the for_each_memblock() loop was never entered.
I could not come up with a better workaround than initializing
the specified_mem_size to zero, but at least that is the value
that the variable would have in the hypothetical case of no
memblocks.
Fixes: 877ec119dbbf ("ARM: 8706/1: NOMMU: Move out MPU setup in separate module")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/mm/pmsa-v7.c')
| -rw-r--r-- | arch/arm/mm/pmsa-v7.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/pmsa-v7.c b/arch/arm/mm/pmsa-v7.c index 106ae1c435a3..976df60ac426 100644 --- a/arch/arm/mm/pmsa-v7.c +++ b/arch/arm/mm/pmsa-v7.c @@ -234,7 +234,7 @@ static int __init allocate_region(phys_addr_t base, phys_addr_t size, /* MPU initialisation functions */ void __init adjust_lowmem_bounds_mpu(void) { - phys_addr_t specified_mem_size, total_mem_size = 0; + phys_addr_t specified_mem_size = 0, total_mem_size = 0; struct memblock_region *reg; bool first = true; phys_addr_t mem_start; |