diff options
| author | Trevor Gamblin <tgamblin@baylibre.com> | 2024-06-13 19:34:06 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-06-22 12:48:48 +0300 |
| commit | 40c0f07528c795b83abb4550a16b7866c6db5778 (patch) | |
| tree | c71e266ee8d81378eb871f16f0401026f8f91812 /drivers/iio/adc | |
| parent | 20460472952043a4735e9abc1fd9de8e024d1c9e (diff) | |
| download | linux-40c0f07528c795b83abb4550a16b7866c6db5778.tar.xz | |
iio: adc: adi-axi-adc: improve probe() error messaging
The current error handling for calls such as devm_clk_get_enabled() in
the adi-axi-adc probe() function means that, if a property such as
'clocks' (for example) is not present in the devicetree when booting a
kernel with the driver enabled, the resulting error message will be
vague, e.g.:
|adi_axi_adc 44a00000.backend: probe with driver adi_axi_adc failed with error -2
Change the devm_clk_get_enabled(), devm_regmap_init_mmio(), and
devm_iio_backend_register() checks to use dev_err_probe() with some
context for easier debugging.
After the change:
|adi_axi_adc 44a00000.backend: error -ENOENT: failed to get clock
|adi_axi_adc 44a00000.backend: probe with driver adi_axi_adc failed with error -2
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240613163407.2147884-1-tgamblin@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc')
| -rw-r--r-- | drivers/iio/adc/adi-axi-adc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 0f8bd1d75131..21ce7564e83d 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -308,7 +308,8 @@ static int adi_axi_adc_probe(struct platform_device *pdev) st->regmap = devm_regmap_init_mmio(&pdev->dev, base, &axi_adc_regmap_config); if (IS_ERR(st->regmap)) - return PTR_ERR(st->regmap); + return dev_err_probe(&pdev->dev, PTR_ERR(st->regmap), + "failed to init register map\n"); expected_ver = device_get_match_data(&pdev->dev); if (!expected_ver) @@ -316,7 +317,8 @@ static int adi_axi_adc_probe(struct platform_device *pdev) clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(clk)) - return PTR_ERR(clk); + return dev_err_probe(&pdev->dev, PTR_ERR(clk), + "failed to get clock\n"); /* * Force disable the core. Up to the frontend to enable us. And we can @@ -344,7 +346,8 @@ static int adi_axi_adc_probe(struct platform_device *pdev) ret = devm_iio_backend_register(&pdev->dev, &adi_axi_adc_generic, st); if (ret) - return ret; + return dev_err_probe(&pdev->dev, ret, + "failed to register iio backend\n"); dev_info(&pdev->dev, "AXI ADC IP core (%d.%.2d.%c) probed\n", ADI_AXI_PCORE_VER_MAJOR(ver), |