tree 1015781676836a0e849c65a49e50679c1884b24d
parent 815806e39bf6f7e7b34875d4a9609dbe76661782
author Nikita Yushchenko <nikita.yoush@cogentembedded.com> 1474534945 +0300
committer Mark Brown <broonie@kernel.org> 1474539862 +0100

regmap: fix deadlock on _regmap_raw_write() error path

Commit 815806e39bf6 ("regmap: drop cache if the bus transfer error")
added a call to regcache_drop_region() to error path in
_regmap_raw_write(). However that path runs with regmap lock taken,
and regcache_drop_region() tries to re-take it, causing a deadlock.
Fix that by calling map->cache_ops->drop() directly.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Mark Brown <broonie@kernel.org>