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    SubjectRe: [PATCH 03/19] powerpc: Mark variables as unused
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    Le 22/03/2018 à 21:19, Mathieu Malaterre a écrit :
    > Add gcc attribute unused for two variables. Fix warnings treated as errors
    > with W=1:
    >
    > arch/powerpc/kernel/prom_init.c:1388:8: error: variable ‘path’ set but not used [-Werror=unused-but-set-variable]
    >
    > Signed-off-by: Mathieu Malaterre <malat@debian.org>
    > ---
    > arch/powerpc/kernel/prom_init.c | 4 ++--
    > 1 file changed, 2 insertions(+), 2 deletions(-)
    >
    > diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
    > index acf4b2e0530c..6a3ac4522144 100644
    > --- a/arch/powerpc/kernel/prom_init.c
    > +++ b/arch/powerpc/kernel/prom_init.c
    > @@ -603,7 +603,7 @@ static void __init early_cmdline_parse(void)
    > const char *opt;
    >
    > char *p;
    > - int l = 0;
    > + int l __maybe_unused = 0;
    >
    > prom_cmd_line[0] = 0;
    > p = prom_cmd_line;
    > @@ -1385,7 +1385,7 @@ static void __init reserve_mem(u64 base, u64 size)
    > static void __init prom_init_mem(void)
    > {
    > phandle node;
    > - char *path, type[64];
    > + char *path __maybe_unused, type[64];

    path is only used if DEBUG_PROM is defined, so it should be enclosed
    into #ifdef DEBUG_PROM

    Christophe

    > unsigned int plen;
    > cell_t *p, *endp;
    > __be32 val;
    >

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