[PATCH] ASoC: tlv320aic31xx: Make regmap cache only on probe()
Currently the tlv320aic31xx driver has regulator support but does not enable the regulators during probe, deferring this until something causes ASoC to make the card active. It does put the device into cache only mode but only when the component level probe is called, however if interrupts are in use the driver will access the regmap before then which if the regulators are not powered on would cause I/O problems.
Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/tlv320aic31xx.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c index 51870d50f419..b504d63385b3 100644 --- a/sound/soc/codecs/tlv320aic31xx.c +++ b/sound/soc/codecs/tlv320aic31xx.c @@ -1604,6 +1604,8 @@ static int aic31xx_i2c_probe(struct i2c_client *i2c, ret); return ret; } + regcache_cache_only(aic31xx->regmap, true); + aic31xx->dev = &i2c->dev; aic31xx->irq = i2c->irq;
On Wed, 7 Jul 2021 17:02:34 +0100, Mark Brown wrote:
Currently the tlv320aic31xx driver has regulator support but does not enable the regulators during probe, deferring this until something causes ASoC to make the card active. It does put the device into cache only mode but only when the component level probe is called, however if interrupts are in use the driver will access the regmap before then which if the regulators are not powered on would cause I/O problems.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: tlv320aic31xx: Make regmap cache only on probe() commit: 6c621b811f99feb3941f04b386795b45f47cd771
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
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Mark Brown