diff options
Diffstat (limited to 'sound/soc/soc-io.c')
| -rw-r--r-- | sound/soc/soc-io.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/soc/soc-io.c b/sound/soc/soc-io.c index 9b3939049cef..a90a1630ab1c 100644 --- a/sound/soc/soc-io.c +++ b/sound/soc/soc-io.c @@ -195,9 +195,14 @@ EXPORT_SYMBOL_GPL(snd_soc_component_test_bits); unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg) { + struct snd_card *snd_card = codec->component.card->snd_card; unsigned int val; int ret; + if (unlikely(!snd_card_is_online_state(snd_card))) { + dev_err(codec->dev, "read 0x%02x while offline\n", reg); + return -ENODEV; + } ret = snd_soc_component_read(&codec->component, reg, &val); if (ret < 0) return -1; @@ -209,6 +214,12 @@ EXPORT_SYMBOL_GPL(snd_soc_read); int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int val) { + struct snd_card *snd_card = codec->component.card->snd_card; + + if (unlikely(!snd_card_is_online_state(snd_card))) { + dev_err(codec->dev, "write 0x%02x while offline\n", reg); + return -ENODEV; + } return snd_soc_component_write(&codec->component, reg, val); } EXPORT_SYMBOL_GPL(snd_soc_write); |