Commit f2e055e7 authored Jul 04, 2013 by Daniel Mack Committed by Mark Brown Jul 04, 2013

regmap: cache: bail in regmap_async_complete() for bus-less maps



Commit f8bd822c ("regmap: cache: Factor out block sync") made
regcache_rbtree_sync() call regmap_async_complete(), which in turn does
not check for map->bus before dereferencing it.

This causes a NULL pointer dereference on bus-less maps.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: stable@vger.kernel.org [v3.10 only]
Signed-off-by: Mark Brown <broonie@linaro.org>

parent 8bb495e3

drivers/base/regmap/regmap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1717,7 +1717,7 @@ int regmap_async_complete(struct regmap *map)
		int ret;

		/* Nothing to do with no async support */
		if (!map->bus->async_write)
		if (!map->bus \|\| !map->bus->async_write)
		return 0;

		trace_regmap_async_complete_start(map->dev);