diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2011-01-10 10:10:56 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-01-10 22:19:31 +0000 |
| commit | 2aa86323d815bab62a7e1d3ef8ed6c81a6dfeffa (patch) | |
| tree | e57cf635b4a0bc7c8d76182f869ae4babbd12395 /sound/soc/soc-core.c | |
| parent | 0d51a9cbb6c1275cc0f3840c36f8b7840a438c59 (diff) | |
| download | lwn-2aa86323d815bab62a7e1d3ef8ed6c81a6dfeffa.tar.gz lwn-2aa86323d815bab62a7e1d3ef8ed6c81a6dfeffa.zip | |
ASoC: soc-core: Add support for NULL default register caches
The infrastructure for handling NULL default register maps is already
included in the soc-cache code, just ensure that we don't try to dereference
a NULL pointer while accessing a NULL register cache.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Timur Tabi <timur@freescale.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-core.c')
| -rw-r--r-- | sound/soc/soc-core.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 96bf381683f7..4274435853df 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3507,11 +3507,13 @@ int snd_soc_register_codec(struct device *dev, * kernel might have freed the array by the time we initialize * the cache. */ - codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default, - reg_size, GFP_KERNEL); - if (!codec->reg_def_copy) { - ret = -ENOMEM; - goto fail; + if (codec_drv->reg_cache_default) { + codec->reg_def_copy = kmemdup(codec_drv->reg_cache_default, + reg_size, GFP_KERNEL); + if (!codec->reg_def_copy) { + ret = -ENOMEM; + goto fail; + } } } |