diff options
| author | Alain Volmat <alain.volmat@st.com> | 2019-10-24 14:52:00 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2019-11-11 21:37:59 +0100 |
| commit | d77eceb2de99f5d7e0c645bad15511fe1af59e09 (patch) | |
| tree | cbdd398b086d098c29e85fba8daa2ebdcbf6ce62 /drivers/i2c/busses/i2c-stm32f7.c | |
| parent | 7bdf7c84c216c6d0447e5e15d229e2c3d6b705fa (diff) | |
| download | linux-d77eceb2de99f5d7e0c645bad15511fe1af59e09.tar.bz2 | |
i2c: stm32f7: report dma error during probe
Distinguish between the case where dma information is not provided
within the DT and the case of an error during the dma init.
Exit the probe with error in case of an error during dma init.
Fixes: bb8822cbbc53 ("i2c: i2c-stm32: Add generic DMA API")
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-stm32f7.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-stm32f7.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index a70f48ea2aee..5a51f6b501f8 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1950,6 +1950,15 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) 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); |