Gcc warns about the case where regmap_read_debugfs tries to walk an empty map->debugfs_off_cache list, which results in uninitialized variable getting returned.
Setting this variable to 0 first avoids the warning and the potentially undefined value. Without this patch, building mxs_defconfig results in: drivers/base/regmap/regmap-debugfs.c: In function 'regmap_read_debugfs': drivers/base/regmap/regmap-debugfs.c:147:9: : warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] Signed-off-by: Arnd Bergmann <a...@arndb.de> Cc: Mark Brown <broo...@opensource.wolfsonmicro.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/base/regmap/regmap-debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 46a213a..31cc656 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -80,7 +80,7 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map, { struct regmap_debugfs_off_cache *c = NULL; loff_t p = 0; - unsigned int i, ret; + unsigned int i, ret = 0; /* * If we don't have a cache build one so we don't have to do a -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/