On Fri, Jan 25, 2013 at 02:14:28PM +0000, Arnd Bergmann wrote:
> Gcc warns about the case where regmap_read_debugfs tries

Are you sure about that function name?

> 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.

This probably won't apply against current code as there's already a
better fix there, in general just picking a value to initialise masks
errors.