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Subject[PATCH] iio: dac: ti-dac7612: Replace indio_dev->mlock with own device lock
Date
From: Sergiu Cuciurean <sergiu.cuciurean@analog.com>

As part of the general cleanup of indio_dev->mlock, this change replaces
it with a local lock on the device's state structure.

Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
drivers/iio/dac/ti-dac7612.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/dac/ti-dac7612.c b/drivers/iio/dac/ti-dac7612.c
index 07c9f39d54f1..34c2aec204ef 100644
--- a/drivers/iio/dac/ti-dac7612.c
+++ b/drivers/iio/dac/ti-dac7612.c
@@ -21,6 +21,7 @@ struct dac7612 {
struct spi_device *spi;
struct gpio_desc *loaddacs;
uint16_t cache[2];
+ struct mutex lock;

/*
* DMA (thus cache coherency maintenance) requires the
@@ -101,9 +102,9 @@ static int dac7612_write_raw(struct iio_dev *iio_dev,
if (val == priv->cache[chan->channel])
return 0;

- mutex_lock(&iio_dev->mlock);
+ mutex_lock(&priv->lock);
ret = dac7612_cmd_single(priv, chan->channel, val);
- mutex_unlock(&iio_dev->mlock);
+ mutex_unlock(&priv->lock);

return ret;
}
@@ -145,6 +146,8 @@ static int dac7612_probe(struct spi_device *spi)
iio_dev->num_channels = ARRAY_SIZE(priv->cache);
iio_dev->name = spi_get_device_id(spi)->name;

+ mutex_init(&priv->lock);
+
for (i = 0; i < ARRAY_SIZE(priv->cache); i++) {
ret = dac7612_cmd_single(priv, i, 0);
if (ret)
--
2.25.1
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