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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:17:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-08 04:17:45 +0000 |
| commit | 41fb2ba1cd2e84f28cd9f5b91d670fef7d982409 (patch) | |
| tree | 3518db389445fe1c1e74d64e3598ed34c6e2c59a /drivers/iio/dac/mcp4725.c | |
| parent | Releasing progress-linux version 4.19.282-1progress5u1. (diff) | |
| download | linux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.tar.xz linux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.zip | |
Merging upstream version 4.19.289.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/dac/mcp4725.c')
| -rw-r--r-- | drivers/iio/dac/mcp4725.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index 30dc2775c..f6e2e4676 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -50,12 +50,18 @@ static int mcp4725_suspend(struct device *dev) struct mcp4725_data *data = iio_priv(i2c_get_clientdata( to_i2c_client(dev))); u8 outbuf[2]; + int ret; outbuf[0] = (data->powerdown_mode + 1) << 4; outbuf[1] = 0; data->powerdown = true; - return i2c_master_send(data->client, outbuf, 2); + ret = i2c_master_send(data->client, outbuf, 2); + if (ret < 0) + return ret; + else if (ret != 2) + return -EIO; + return 0; } static int mcp4725_resume(struct device *dev) @@ -63,13 +69,19 @@ static int mcp4725_resume(struct device *dev) struct mcp4725_data *data = iio_priv(i2c_get_clientdata( to_i2c_client(dev))); u8 outbuf[2]; + int ret; /* restore previous DAC value */ outbuf[0] = (data->dac_value >> 8) & 0xf; outbuf[1] = data->dac_value & 0xff; data->powerdown = false; - return i2c_master_send(data->client, outbuf, 2); + ret = i2c_master_send(data->client, outbuf, 2); + if (ret < 0) + return ret; + else if (ret != 2) + return -EIO; + return 0; } #ifdef CONFIG_PM_SLEEP |