| Message ID | 20200827192642.1725-8-krzk@kernel.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2,01/18] iio: accel: bma180: Simplify with dev_err_probe() | expand |
On Thu, Aug 27, 2020 at 10:28 PM Krzysztof Kozlowski <krzk@kernel.org> wrote: > > Common pattern of handling deferred probe can be simplified with > dev_err_probe(). Less code and also it prints the error value. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> > > --- > > Changes since v1: > 1. Convert to devm_clk_get_optional > 2. Update also stm32-dfsdm-core and stm32-dac-core. > 3. Wrap around 100 characters (accepted by checkpatch). > --- > drivers/iio/adc/stm32-adc-core.c | 67 +++++++++--------------------- > drivers/iio/adc/stm32-adc.c | 9 +--- > drivers/iio/adc/stm32-dfsdm-adc.c | 9 +--- > drivers/iio/adc/stm32-dfsdm-core.c | 8 +--- > drivers/iio/dac/stm32-dac-core.c | 5 +-- > 5 files changed, 26 insertions(+), 72 deletions(-) > > diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c > index 0e2068ec068b..707c85dab7df 100644 > --- a/drivers/iio/adc/stm32-adc-core.c > +++ b/drivers/iio/adc/stm32-adc-core.c > @@ -582,11 +582,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, > priv->syscfg = syscon_regmap_lookup_by_phandle(np, "st,syscfg"); > if (IS_ERR(priv->syscfg)) { > ret = PTR_ERR(priv->syscfg); > - if (ret != -ENODEV) { > - if (ret != -EPROBE_DEFER) > - dev_err(dev, "Can't probe syscfg: %d\n", ret); > - return ret; > - } > + if (ret != -ENODEV) > + return dev_err_probe(dev, ret, "Can't probe syscfg\n"); > + > priv->syscfg = NULL; > } > > @@ -596,12 +594,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, > priv->booster = devm_regulator_get_optional(dev, "booster"); > if (IS_ERR(priv->booster)) { > ret = PTR_ERR(priv->booster); > - if (ret != -ENODEV) { > - if (ret != -EPROBE_DEFER) > - dev_err(dev, "can't get booster %d\n", > - ret); > - return ret; > - } > + if (ret != -ENODEV) > + dev_err_probe(dev, ret, "can't get booster\n"); > + > priv->booster = NULL; > } > } > @@ -612,11 +607,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, > priv->vdd = devm_regulator_get_optional(dev, "vdd"); > if (IS_ERR(priv->vdd)) { > ret = PTR_ERR(priv->vdd); > - if (ret != -ENODEV) { > - if (ret != -EPROBE_DEFER) > - dev_err(dev, "can't get vdd %d\n", ret); > - return ret; > - } > + if (ret != -ENODEV) > + return dev_err_probe(dev, ret, "can't get vdd\n"); > + > priv->vdd = NULL; > } > } > @@ -669,42 +662,20 @@ static int stm32_adc_probe(struct platform_device *pdev) > priv->common.phys_base = res->start; > > priv->vdda = devm_regulator_get(&pdev->dev, "vdda"); > - if (IS_ERR(priv->vdda)) { > - ret = PTR_ERR(priv->vdda); > - if (ret != -EPROBE_DEFER) > - dev_err(&pdev->dev, "vdda get failed, %d\n", ret); > - return ret; > - } > + if (IS_ERR(priv->vdda)) > + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vdda), "vdda get failed\n"); > > priv->vref = devm_regulator_get(&pdev->dev, "vref"); > - if (IS_ERR(priv->vref)) { > - ret = PTR_ERR(priv->vref); > - if (ret != -EPROBE_DEFER) > - dev_err(&pdev->dev, "vref get failed, %d\n", ret); > - return ret; > - } > + if (IS_ERR(priv->vref)) > + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vref), "vref get failed\n"); > > - priv->aclk = devm_clk_get(&pdev->dev, "adc"); > - if (IS_ERR(priv->aclk)) { > - ret = PTR_ERR(priv->aclk); > - if (ret != -ENOENT) { > - if (ret != -EPROBE_DEFER) > - dev_err(&pdev->dev, "Can't get 'adc' clock\n"); > - return ret; > - } > - priv->aclk = NULL; > - } > + priv->aclk = devm_clk_get_optional(&pdev->dev, "adc"); > + if (IS_ERR(priv->aclk)) > + return dev_err_probe(&pdev->dev, PTR_ERR(priv->aclk), "Can't get 'adc' clock\n"); > > - priv->bclk = devm_clk_get(&pdev->dev, "bus"); > - if (IS_ERR(priv->bclk)) { > - ret = PTR_ERR(priv->bclk); > - if (ret != -ENOENT) { > - if (ret != -EPROBE_DEFER) > - dev_err(&pdev->dev, "Can't get 'bus' clock\n"); > - return ret; > - } > - priv->bclk = NULL; > - } > + priv->bclk = devm_clk_get_optional(&pdev->dev, "bus"); > + if (IS_ERR(priv->bclk)) > + return dev_err_probe(&pdev->dev, PTR_ERR(priv->bclk), "Can't get 'bus' clock\n"); > > ret = stm32_adc_core_switches_probe(dev, priv); > if (ret) > diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c > index 3eb9ebe8372f..b8e764ca54a6 100644 > --- a/drivers/iio/adc/stm32-adc.c > +++ b/drivers/iio/adc/stm32-adc.c > @@ -1805,13 +1805,8 @@ static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev) > adc->dma_chan = dma_request_chan(dev, "rx"); > if (IS_ERR(adc->dma_chan)) { > ret = PTR_ERR(adc->dma_chan); > - if (ret != -ENODEV) { > - if (ret != -EPROBE_DEFER) > - dev_err(dev, > - "DMA channel request failed with %d\n", > - ret); > - return ret; > - } > + if (ret != -ENODEV) > + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); > > /* DMA is optional: fall back to IRQ mode */ > adc->dma_chan = NULL; > diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c > index 5e10fb4f3704..12c951078c1f 100644 > --- a/drivers/iio/adc/stm32-dfsdm-adc.c > +++ b/drivers/iio/adc/stm32-dfsdm-adc.c > @@ -1473,13 +1473,8 @@ static int stm32_dfsdm_adc_init(struct device *dev, struct iio_dev *indio_dev) > /* Optionally request DMA */ > ret = stm32_dfsdm_dma_request(dev, indio_dev); > if (ret) { > - if (ret != -ENODEV) { > - if (ret != -EPROBE_DEFER) > - dev_err(dev, > - "DMA channel request failed with %d\n", > - ret); > - return ret; > - } > + if (ret != -ENODEV) > + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); > > dev_dbg(dev, "No DMA support\n"); > return 0; > diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c > index 26e2011c5868..34e4e6e59acf 100644 > --- a/drivers/iio/adc/stm32-dfsdm-core.c > +++ b/drivers/iio/adc/stm32-dfsdm-core.c > @@ -243,12 +243,8 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev, > * on use case. > */ > priv->clk = devm_clk_get(&pdev->dev, "dfsdm"); > - if (IS_ERR(priv->clk)) { > - ret = PTR_ERR(priv->clk); > - if (ret != -EPROBE_DEFER) > - dev_err(&pdev->dev, "Failed to get clock (%d)\n", ret); > - return ret; > - } > + if (IS_ERR(priv->clk)) > + return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk), "Failed to get clock\n"); > > priv->aclk = devm_clk_get(&pdev->dev, "audio"); > if (IS_ERR(priv->aclk)) > diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c > index 7e5809ba0dee..906436780347 100644 > --- a/drivers/iio/dac/stm32-dac-core.c > +++ b/drivers/iio/dac/stm32-dac-core.c > @@ -150,10 +150,7 @@ static int stm32_dac_probe(struct platform_device *pdev) > rst = devm_reset_control_get_optional_exclusive(dev, NULL); > if (rst) { > if (IS_ERR(rst)) { > - ret = PTR_ERR(rst); > - if (ret != -EPROBE_DEFER) > - dev_err(dev, "reset get failed, %d\n", ret); > - > + ret = dev_err_probe(dev, PTR_ERR(rst), "reset get failed\n"); > goto err_hw_stop; > } > > -- > 2.17.1 >
diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index 0e2068ec068b..707c85dab7df 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -582,11 +582,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->syscfg = syscon_regmap_lookup_by_phandle(np, "st,syscfg"); if (IS_ERR(priv->syscfg)) { ret = PTR_ERR(priv->syscfg); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "Can't probe syscfg: %d\n", ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "Can't probe syscfg\n"); + priv->syscfg = NULL; } @@ -596,12 +594,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->booster = devm_regulator_get_optional(dev, "booster"); if (IS_ERR(priv->booster)) { ret = PTR_ERR(priv->booster); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "can't get booster %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + dev_err_probe(dev, ret, "can't get booster\n"); + priv->booster = NULL; } } @@ -612,11 +607,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->vdd = devm_regulator_get_optional(dev, "vdd"); if (IS_ERR(priv->vdd)) { ret = PTR_ERR(priv->vdd); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "can't get vdd %d\n", ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "can't get vdd\n"); + priv->vdd = NULL; } } @@ -669,42 +662,20 @@ static int stm32_adc_probe(struct platform_device *pdev) priv->common.phys_base = res->start; priv->vdda = devm_regulator_get(&pdev->dev, "vdda"); - if (IS_ERR(priv->vdda)) { - ret = PTR_ERR(priv->vdda); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "vdda get failed, %d\n", ret); - return ret; - } + if (IS_ERR(priv->vdda)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vdda), "vdda get failed\n"); priv->vref = devm_regulator_get(&pdev->dev, "vref"); - if (IS_ERR(priv->vref)) { - ret = PTR_ERR(priv->vref); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "vref get failed, %d\n", ret); - return ret; - } + if (IS_ERR(priv->vref)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vref), "vref get failed\n"); - priv->aclk = devm_clk_get(&pdev->dev, "adc"); - if (IS_ERR(priv->aclk)) { - ret = PTR_ERR(priv->aclk); - if (ret != -ENOENT) { - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Can't get 'adc' clock\n"); - return ret; - } - priv->aclk = NULL; - } + priv->aclk = devm_clk_get_optional(&pdev->dev, "adc"); + if (IS_ERR(priv->aclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->aclk), "Can't get 'adc' clock\n"); - priv->bclk = devm_clk_get(&pdev->dev, "bus"); - if (IS_ERR(priv->bclk)) { - ret = PTR_ERR(priv->bclk); - if (ret != -ENOENT) { - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Can't get 'bus' clock\n"); - return ret; - } - priv->bclk = NULL; - } + priv->bclk = devm_clk_get_optional(&pdev->dev, "bus"); + if (IS_ERR(priv->bclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->bclk), "Can't get 'bus' clock\n"); ret = stm32_adc_core_switches_probe(dev, priv); if (ret) diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 3eb9ebe8372f..b8e764ca54a6 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -1805,13 +1805,8 @@ static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev) adc->dma_chan = dma_request_chan(dev, "rx"); if (IS_ERR(adc->dma_chan)) { ret = PTR_ERR(adc->dma_chan); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, - "DMA channel request failed with %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); /* DMA is optional: fall back to IRQ mode */ adc->dma_chan = NULL; diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index 5e10fb4f3704..12c951078c1f 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -1473,13 +1473,8 @@ static int stm32_dfsdm_adc_init(struct device *dev, struct iio_dev *indio_dev) /* Optionally request DMA */ ret = stm32_dfsdm_dma_request(dev, indio_dev); if (ret) { - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, - "DMA channel request failed with %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); dev_dbg(dev, "No DMA support\n"); return 0; diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c index 26e2011c5868..34e4e6e59acf 100644 --- a/drivers/iio/adc/stm32-dfsdm-core.c +++ b/drivers/iio/adc/stm32-dfsdm-core.c @@ -243,12 +243,8 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev, * on use case. */ priv->clk = devm_clk_get(&pdev->dev, "dfsdm"); - if (IS_ERR(priv->clk)) { - ret = PTR_ERR(priv->clk); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to get clock (%d)\n", ret); - return ret; - } + if (IS_ERR(priv->clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk), "Failed to get clock\n"); priv->aclk = devm_clk_get(&pdev->dev, "audio"); if (IS_ERR(priv->aclk)) diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c index 7e5809ba0dee..906436780347 100644 --- a/drivers/iio/dac/stm32-dac-core.c +++ b/drivers/iio/dac/stm32-dac-core.c @@ -150,10 +150,7 @@ static int stm32_dac_probe(struct platform_device *pdev) rst = devm_reset_control_get_optional_exclusive(dev, NULL); if (rst) { if (IS_ERR(rst)) { - ret = PTR_ERR(rst); - if (ret != -EPROBE_DEFER) - dev_err(dev, "reset get failed, %d\n", ret); - + ret = dev_err_probe(dev, PTR_ERR(rst), "reset get failed\n"); goto err_hw_stop; }
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> --- Changes since v1: 1. Convert to devm_clk_get_optional 2. Update also stm32-dfsdm-core and stm32-dac-core. 3. Wrap around 100 characters (accepted by checkpatch). --- drivers/iio/adc/stm32-adc-core.c | 67 +++++++++--------------------- drivers/iio/adc/stm32-adc.c | 9 +--- drivers/iio/adc/stm32-dfsdm-adc.c | 9 +--- drivers/iio/adc/stm32-dfsdm-core.c | 8 +--- drivers/iio/dac/stm32-dac-core.c | 5 +-- 5 files changed, 26 insertions(+), 72 deletions(-)