tree 1d6d28160ef5288d1eb073889309053c707195e4
parent 29332534e2b68b5889a40ccb6606ba0d06750a69
author Sergey SENOZHATSKY <sergey.senozhatsky.work@gmail.com> 1441014898 +0900
committer Mark Brown <broonie@kernel.org> 1441017516 +0100

regmap: fix a NULL pointer dereference in __regmap_init

__regmap_init() may receive a NULL `struct regmap_bus *bus' pointer,
for example, from snd_hdac_regmap_init(), and it make sure that it
does not NULL deference `bus`, except around ->max_raw_read and
->max_raw_write initialisation. Add missing check.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>