Commit 2aa86323 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown

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: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: default avatarTimur Tabi <timur@freescale.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0d51a9cb
......@@ -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;
}
}
}
......
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