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authorArnd Bergmann <arnd@arndb.de>2012-11-06 22:55:28 +0100
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-11-16 10:57:39 +0200
commit5d27aa5af04f58f3020de1c224dcf8a62151fd58 (patch)
treec265c30efaee94dff5641076fb04eb3eb2328825
parentd611d41b46c96195b9a168a21992782458826e07 (diff)
mtd: uninitialized variable warning in map.h
The map_word_load() function initializes exactly as many words in the buffer as required, but gcc cannot figure this out and gives a misleading warning. Marking the local variable as uninitialized_var shuts up that warning. Without this patch, building acs5k_defconfig results in: drivers/mtd/chips/cfi_cmdset_0002.c: In function 'cfi_amdstd_panic_write': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] drivers/mtd/chips/cfi_cmdset_0002.c: In function 'cfi_amdstd_write_words': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] drivers/mtd/chips/cfi_cmdset_0001.c: In function 'cfi_intelext_write_words': include/linux/mtd/map.h:331:11: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
-rw-r--r--include/linux/mtd/map.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 56c7936e0c65..f6eb4332ac92 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -391,7 +391,7 @@ static inline map_word map_word_ff(struct map_info *map)
static inline map_word inline_map_read(struct map_info *map, unsigned long ofs)
{
- map_word r;
+ map_word uninitialized_var(r);
if (map_bankwidth_is_1(map))
r.x[0] = __raw_readb(map->virt + ofs);