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 <a...@arndb.de>
Cc: David Woodhouse <dw...@infradead.org>
Cc: Artem Bityutskiy <artem.bityuts...@linux.intel.com>
Cc: linux-...@lists.infradead.org
---
include/linux/mtd/map.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 3595a02..e3559ba 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -328,7 +328,7 @@ static inline int map_word_bitsset(struct map_info *map,
map_word val1, map_word
static inline map_word map_word_load(struct map_info *map, const void *ptr)
{
- map_word r;
+ map_word uninitialized_var(r);
if (map_bankwidth_is_1(map))
r.x[0] = *(unsigned char *)ptr;
--
1.7.10
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