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authorDmitry Eremin-Solenikov <dmitry_eremin@mentor.com>2013-01-31 21:06:34 +0400
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2013-02-22 11:22:19 +0400
commit24dea0c9feccf699749f860fa2f4ccd84d30390d (patch)
treed2adf3a0478ae150b46462da4293876222d6d8ab /include/linux/mtd
parentbe0638d9e4795254e28e39eff61e38f47d240fd2 (diff)
downloadlinux-24dea0c9feccf699749f860fa2f4ccd84d30390d.tar.xz
mtd: map: BUG() in non handled cases
Several map-related functions look like a serie of ifs, checking widths of map. Those functions do not have any handling for default case. Instead of fiddling with uninitialized_var in those functions, let's just add a (correct) BUG() to the default case on those maps. This will also allow us to catch potential errors in maps setup in future. Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'include/linux/mtd')
-rw-r--r--include/linux/mtd/map.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 8b9bfd7dcaa3..4b02512e421c 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -329,7 +329,7 @@ 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 = {{0} };
+ map_word r;
if (map_bankwidth_is_1(map))
r.x[0] = *(unsigned char *)ptr;
@@ -343,6 +343,8 @@ static inline map_word map_word_load(struct map_info *map, const void *ptr)
#endif
else if (map_bankwidth_is_large(map))
memcpy(r.x, ptr, map->bankwidth);
+ else
+ BUG();
return r;
}
@@ -392,7 +394,7 @@ 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 uninitialized_var(r);
+ map_word r;
if (map_bankwidth_is_1(map))
r.x[0] = __raw_readb(map->virt + ofs);
@@ -426,6 +428,8 @@ static inline void inline_map_write(struct map_info *map, const map_word datum,
#endif
else if (map_bankwidth_is_large(map))
memcpy_toio(map->virt+ofs, datum.x, map->bankwidth);
+ else
+ BUG();
mb();
}