[PATCH] powerpc: Remove variable ‘path’ since not used

[Mathieu Malaterre]

In commit eab00a208eb6 ("powerpc: Move `path` variable inside
DEBUG_PROM") DEBUG_PROM sentinels were added to silence a warning
(treated as error with W=1):

  arch/powerpc/kernel/prom_init.c:1388:8: error: variable ‘path’ set but not 
used [-Werror=unused-but-set-variable]

Rework the original patch and simplify the code, by removing the
variable ‘path’ completely. Fix line over 90 characters.

Suggested-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Mathieu Malaterre <ma...@debian.org>
---
 arch/powerpc/kernel/prom_init.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7edb23861162..f6df4ddebb82 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1566,9 +1566,6 @@ static void __init reserve_mem(u64 base, u64 size)
 static void __init prom_init_mem(void)
 {
        phandle node;
-#ifdef DEBUG_PROM
-       char *path;
-#endif
        char type[64];
        unsigned int plen;
        cell_t *p, *endp;
@@ -1590,9 +1587,6 @@ 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;
@@ -1617,9 +1611,10 @@ static void __init prom_init_mem(void)
                endp = p + (plen / sizeof(cell_t));
 
 #ifdef DEBUG_PROM
-               memset(path, 0, sizeof(prom_scratch));
-               call_prom("package-to-path", 3, 1, node, path, 
sizeof(prom_scratch) - 1);
-               prom_debug("  node %s :\n", path);
+               memset(prom_scratch, 0, sizeof(prom_scratch));
+               call_prom("package-to-path", 3, 1, node, prom_scratch,
+                         sizeof(prom_scratch) - 1);
+               prom_debug("  node %s :\n", prom_scratch);
 #endif /* DEBUG_PROM */
 
                while ((endp - p) >= (rac + rsc)) {
-- 
2.20.1