diff options
| author | Derek Fang <derek.fang@realtek.com> | 2020-12-09 17:13:08 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-12-09 12:13:44 +0000 |
| commit | 397e089bda327a350c1cb29133cb66795339a5d9 (patch) | |
| tree | 9c5df0edbb5f85023d8c68610c849e8fd398e2ec /sound | |
| parent | e648e3f1165354f04a4deed1f41152a287b68d59 (diff) | |
ASoC: rt1015: check the return value of regmap_read during i2c probe
In some projects, the device ID register is not read correctly.
This patch helps to verify the issue is caused from i2c host or client.
Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20201209091308.2823-1-derek.fang@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/rt1015.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/soc/codecs/rt1015.c b/sound/soc/codecs/rt1015.c index ac4c9f43b338..32e6bcf763d1 100644 --- a/sound/soc/codecs/rt1015.c +++ b/sound/soc/codecs/rt1015.c @@ -1207,8 +1207,13 @@ static int rt1015_i2c_probe(struct i2c_client *i2c, rt1015->hw_config = (i2c->addr == 0x29) ? RT1015_HW_29 : RT1015_HW_28; - regmap_read(rt1015->regmap, RT1015_DEVICE_ID, &val); - if ((val != RT1015_DEVICE_ID_VAL) && (val != RT1015_DEVICE_ID_VAL2)) { + ret = regmap_read(rt1015->regmap, RT1015_DEVICE_ID, &val); + if (ret) { + dev_err(&i2c->dev, + "Failed to read device register: %d\n", ret); + return ret; + } else if ((val != RT1015_DEVICE_ID_VAL) && + (val != RT1015_DEVICE_ID_VAL2)) { dev_err(&i2c->dev, "Device with ID register %x is not rt1015\n", val); return -ENODEV; |