dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
if (!dma)
- return NULL;
+ return ERR_PTR(-ENOMEM);
/* Request and configure I2C TX dma channel */
- dma->chan_tx = dma_request_slave_channel(dev, "tx");
- if (!dma->chan_tx) {
+ dma->chan_tx = dma_request_chan(dev, "tx");
+ if (IS_ERR(dma->chan_tx)) {
dev_dbg(dev, "can't request DMA tx channel\n");
- ret = -EINVAL;
+ ret = PTR_ERR(dma->chan_tx);
goto fail_al;
}
}
/* Request and configure I2C RX dma channel */
- dma->chan_rx = dma_request_slave_channel(dev, "rx");
- if (!dma->chan_rx) {
+ dma->chan_rx = dma_request_chan(dev, "rx");
+ if (IS_ERR(dma->chan_rx)) {
dev_err(dev, "can't request DMA rx channel\n");
- ret = -EINVAL;
+ ret = PTR_ERR(dma->chan_rx);
goto fail_tx;
}
devm_kfree(dev, dma);
dev_info(dev, "can't use DMA\n");
- return NULL;
+ return ERR_PTR(ret);
}
void stm32_i2c_dma_free(struct stm32_i2c_dma *dma)
i2c_dev->dma = stm32_i2c_dma_request(i2c_dev->dev, phy_addr,
STM32F7_I2C_TXDR,
STM32F7_I2C_RXDR);
+ if (PTR_ERR(i2c_dev->dma) == -ENODEV)
+ i2c_dev->dma = NULL;
+ else if (IS_ERR(i2c_dev->dma)) {
+ ret = PTR_ERR(i2c_dev->dma);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "Failed to request dma error %i\n", ret);
+ goto clk_free;
+ }
platform_set_drvdata(pdev, i2c_dev);