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powerpc: Move `path` variable inside DEBUG_PROM 

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]

Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mathieu Malaterre 2018-04-04 22:08:35 +02:00 committed by Michael Ellerman
parent 618a89d738
commit eab00a208e
1 changed files with 7 additions and 2 deletions
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9
arch/powerpc/kernel/prom_init.c
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@ -628,7 +628,7 @@ 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;
@ -1421,7 +1421,10 @@ static void __init reserve_mem(u64 base, u64 size)
static void __init prom_init_mem(void)
{
phandle node;
char *path, type[64];
#ifdef DEBUG_PROM
char *path;
#endif
char type[64];
unsigned int plen;
cell_t *p, *endp;
__be32 val;
@ -1442,7 +1445,9 @@ static void __init prom_init_mem(void)
prom_debug("root_size_cells: %x\n", rsc);
prom_debug("scanning memory:\n");
#ifdef DEBUG_PROM
path = prom_scratch;
#endif
for (node = 0; prom_next_node(&node); ) {
type[0] = 0;