diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/dac/vf610_dac.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/iio/dac/vf610_dac.c b/drivers/iio/dac/vf610_dac.c index 71f8a5c471c4..c1e15ede0e8e 100644 --- a/drivers/iio/dac/vf610_dac.c +++ b/drivers/iio/dac/vf610_dac.c @@ -36,6 +36,7 @@ struct vf610_dac { struct device *dev; enum vf610_conversion_mode_sel conv_mode; void __iomem *regs; + struct mutex lock; }; static void vf610_dac_init(struct vf610_dac *info) @@ -64,7 +65,7 @@ static int vf610_set_conversion_mode(struct iio_dev *indio_dev, struct vf610_dac *info = iio_priv(indio_dev); int val; - mutex_lock(&indio_dev->mlock); + mutex_lock(&info->lock); info->conv_mode = mode; val = readl(info->regs + VF610_DACx_STATCTRL); if (mode) @@ -72,7 +73,7 @@ static int vf610_set_conversion_mode(struct iio_dev *indio_dev, else val &= ~VF610_DAC_LPEN; writel(val, info->regs + VF610_DACx_STATCTRL); - mutex_unlock(&indio_dev->mlock); + mutex_unlock(&info->lock); return 0; } @@ -147,9 +148,9 @@ static int vf610_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - mutex_lock(&indio_dev->mlock); + mutex_lock(&info->lock); writel(VF610_DAC_DAT0(val), info->regs); - mutex_unlock(&indio_dev->mlock); + mutex_unlock(&info->lock); return 0; default: @@ -205,6 +206,8 @@ static int vf610_dac_probe(struct platform_device *pdev) indio_dev->channels = vf610_dac_iio_channels; indio_dev->num_channels = ARRAY_SIZE(vf610_dac_iio_channels); + mutex_init(&info->lock); + ret = clk_prepare_enable(info->clk); if (ret) { dev_err(&pdev->dev, |