disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/iio/dac/mcp4725.c
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@@ -47,12 +47,18 @@
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 	struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
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 		to_i2c_client(dev)));
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 	u8 outbuf[2];
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+	int ret;
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 	outbuf[0] = (data->powerdown_mode + 1) << 4;
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 	outbuf[1] = 0;
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 	data->powerdown = true;
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-	return i2c_master_send(data->client, outbuf, 2);
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+	ret = i2c_master_send(data->client, outbuf, 2);
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+	if (ret < 0)
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+		return ret;
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+	else if (ret != 2)
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+		return -EIO;
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+	return 0;
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 }
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 static int __maybe_unused mcp4725_resume(struct device *dev)
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@@ -60,13 +66,19 @@
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 	struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
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 		to_i2c_client(dev)));
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 	u8 outbuf[2];
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+	int ret;
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 	/* restore previous DAC value */
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 	outbuf[0] = (data->dac_value >> 8) & 0xf;
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 	outbuf[1] = data->dac_value & 0xff;
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 	data->powerdown = false;
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-	return i2c_master_send(data->client, outbuf, 2);
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+	ret = i2c_master_send(data->client, outbuf, 2);
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+	if (ret < 0)
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+		return ret;
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+	else if (ret != 2)
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+		return -EIO;
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+	return 0;
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 }
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 static SIMPLE_DEV_PM_OPS(mcp4725_pm_ops, mcp4725_suspend, mcp4725_resume);
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