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| author | Daniel Mack <zonque@gmail.com> | 2013-07-04 15:11:03 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-07-04 16:54:44 +0400 |
| commit | f2e055e7c9c6084bfbaa68701e52562acf96419e (patch) | |
| tree | 4ce54d782bf8d2d3bea48d57b3304837b733c67e /drivers/base/regmap | |
| parent | 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff) | |
| download | linux-f2e055e7c9c6084bfbaa68701e52562acf96419e.tar.xz | |
regmap: cache: bail in regmap_async_complete() for bus-less maps
Commit f8bd822cb ("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>
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index a941dcfe7590..d0c81d1f409c 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -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); |