| Message ID | 1584642136-15418-1-git-send-email-alain.volmat@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | i2c: stm32: don't print an error on probe deferral | expand |
Hello ! Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Thanks On 3/19/20 7:22 PM, Alain Volmat wrote: > From: Etienne Carriere <etienne.carriere@st.com> > > Do not print an error trace when deferring probe for some resource. > > Signed-off-by: Etienne Carriere <etienne.carriere@st.com> > Signed-off-by: Alain Volmat <alain.volmat@st.com> > --- > drivers/i2c/busses/i2c-stm32.c | 10 +++++++--- > drivers/i2c/busses/i2c-stm32f4.c | 4 +++- > drivers/i2c/busses/i2c-stm32f7.c | 7 +++++-- > 3 files changed, 15 insertions(+), 6 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c > index 1da347e6a358..7be559858402 100644 > --- a/drivers/i2c/busses/i2c-stm32.c > +++ b/drivers/i2c/busses/i2c-stm32.c > @@ -25,8 +25,9 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > /* Request and configure I2C TX dma channel */ > 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 = PTR_ERR(dma->chan_tx); > + if (ret != -EPROBE_DEFER) > + dev_dbg(dev, "can't request DMA tx channel\n"); > goto fail_al; > } > > @@ -44,8 +45,10 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > /* Request and configure I2C RX dma channel */ > 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 = PTR_ERR(dma->chan_rx); > + if (ret != -EPROBE_DEFER) > + dev_err(dev, "can't request DMA rx channel\n"); > + > goto fail_tx; > } > > @@ -73,7 +76,8 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > dma_release_channel(dma->chan_tx); > fail_al: > devm_kfree(dev, dma); > - dev_info(dev, "can't use DMA\n"); > + if (ret != -EPROBE_DEFER) > + dev_info(dev, "can't use DMA\n"); > > return ERR_PTR(ret); > } > diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c > index ba600d77a3f8..1b8cad506ad7 100644 > --- a/drivers/i2c/busses/i2c-stm32f4.c > +++ b/drivers/i2c/busses/i2c-stm32f4.c > @@ -797,8 +797,10 @@ static int stm32f4_i2c_probe(struct platform_device *pdev) > > rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); > if (IS_ERR(rst)) { > - dev_err(&pdev->dev, "Error: Missing controller reset\n"); > ret = PTR_ERR(rst); > + if (ret != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); > + > goto clk_free; > } > reset_control_assert(rst); > diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c > index 78d40a4cc282..ab95ed52a7dc 100644 > --- a/drivers/i2c/busses/i2c-stm32f7.c > +++ b/drivers/i2c/busses/i2c-stm32f7.c > @@ -1915,7 +1915,8 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) > > i2c_dev->clk = devm_clk_get(&pdev->dev, NULL); > if (IS_ERR(i2c_dev->clk)) { > - dev_err(&pdev->dev, "Error: Missing controller clock\n"); > + if (PTR_ERR(i2c_dev->clk) != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Failed to get controller clock\n"); > return PTR_ERR(i2c_dev->clk); > } > > @@ -1941,8 +1942,10 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) > > rst = devm_reset_control_get(&pdev->dev, NULL); > if (IS_ERR(rst)) { > - dev_err(&pdev->dev, "Error: Missing controller reset\n"); > ret = PTR_ERR(rst); > + if (ret != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); > + > goto clk_free; > } > reset_control_assert(rst); >
> if (IS_ERR(dma->chan_tx)) { > - dev_dbg(dev, "can't request DMA tx channel\n"); > ret = PTR_ERR(dma->chan_tx); > + if (ret != -EPROBE_DEFER) > + dev_dbg(dev, "can't request DMA tx channel\n"); dev_dbg for tx... > goto fail_al; > } > > @@ -44,8 +45,10 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > /* Request and configure I2C RX dma channel */ > 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 = PTR_ERR(dma->chan_rx); > + if (ret != -EPROBE_DEFER) > + dev_err(dev, "can't request DMA rx channel\n"); ... and dev_err for rx? Intentional?
Hi Wolfram, On Wed, Apr 15, 2020 at 01:01:45PM +0200, Wolfram Sang wrote: > > if (IS_ERR(dma->chan_tx)) { > > - dev_dbg(dev, "can't request DMA tx channel\n"); > > ret = PTR_ERR(dma->chan_tx); > > + if (ret != -EPROBE_DEFER) > > + dev_dbg(dev, "can't request DMA tx channel\n"); > > dev_dbg for tx... Intention was to not change too much the original code when introducing this check and fixing this message level in another patch. But I guess indeed this can be done all at once. I am pushing a v2 fixing this in this patch and having dev_err for both tx & rx dma requests. > > > goto fail_al; > > } > > > > @@ -44,8 +45,10 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > > /* Request and configure I2C RX dma channel */ > > 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 = PTR_ERR(dma->chan_rx); > > + if (ret != -EPROBE_DEFER) > > + dev_err(dev, "can't request DMA rx channel\n"); > > ... and dev_err for rx? Intentional? >
diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c index 1da347e6a358..7be559858402 100644 --- a/drivers/i2c/busses/i2c-stm32.c +++ b/drivers/i2c/busses/i2c-stm32.c @@ -25,8 +25,9 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, /* Request and configure I2C TX dma channel */ 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 = PTR_ERR(dma->chan_tx); + if (ret != -EPROBE_DEFER) + dev_dbg(dev, "can't request DMA tx channel\n"); goto fail_al; } @@ -44,8 +45,10 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, /* Request and configure I2C RX dma channel */ 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 = PTR_ERR(dma->chan_rx); + if (ret != -EPROBE_DEFER) + dev_err(dev, "can't request DMA rx channel\n"); + goto fail_tx; } @@ -73,7 +76,8 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, dma_release_channel(dma->chan_tx); fail_al: devm_kfree(dev, dma); - dev_info(dev, "can't use DMA\n"); + if (ret != -EPROBE_DEFER) + dev_info(dev, "can't use DMA\n"); return ERR_PTR(ret); } diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c index ba600d77a3f8..1b8cad506ad7 100644 --- a/drivers/i2c/busses/i2c-stm32f4.c +++ b/drivers/i2c/busses/i2c-stm32f4.c @@ -797,8 +797,10 @@ static int stm32f4_i2c_probe(struct platform_device *pdev) rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (IS_ERR(rst)) { - dev_err(&pdev->dev, "Error: Missing controller reset\n"); ret = PTR_ERR(rst); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); + goto clk_free; } reset_control_assert(rst); diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c index 78d40a4cc282..ab95ed52a7dc 100644 --- a/drivers/i2c/busses/i2c-stm32f7.c +++ b/drivers/i2c/busses/i2c-stm32f7.c @@ -1915,7 +1915,8 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) i2c_dev->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(i2c_dev->clk)) { - dev_err(&pdev->dev, "Error: Missing controller clock\n"); + if (PTR_ERR(i2c_dev->clk) != -EPROBE_DEFER) + dev_err(&pdev->dev, "Failed to get controller clock\n"); return PTR_ERR(i2c_dev->clk); } @@ -1941,8 +1942,10 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) rst = devm_reset_control_get(&pdev->dev, NULL); if (IS_ERR(rst)) { - dev_err(&pdev->dev, "Error: Missing controller reset\n"); ret = PTR_ERR(rst); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); + goto clk_free; } reset_control_assert(rst);