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Date: Wed, 26 Aug 2020 16:51:45 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Peter Rosin <peda@...ntia.se>, Kukjin Kim <kgene@...nel.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Michael Hennerich <Michael.Hennerich@...log.com>,
Kevin Hilman <khilman@...libre.com>,
Neil Armstrong <narmstrong@...libre.com>,
Jerome Brunet <jbrunet@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Marek Vasut <marek.vasut@...il.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...com>,
Beniamin Bia <beniamin.bia@...log.com>,
Tomasz Duszynski <tomasz.duszynski@...akon.com>,
Linus Walleij <linus.walleij@...aro.org>,
Jonathan Bakker <xc-racer2@...e.ca>,
Alexandru Ardelean <alexandru.ardelean@...log.com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
linux-amlogic@...ts.infradead.org,
linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH 08/16] iio: adc: stm32: Simplify with dev_err_probe()
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@...nel.org>
---
drivers/iio/adc/stm32-adc-core.c | 62 ++++++++++++-------------------
drivers/iio/adc/stm32-adc.c | 10 ++---
drivers/iio/adc/stm32-dfsdm-adc.c | 10 ++---
3 files changed, 30 insertions(+), 52 deletions(-)
diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c
index 0e2068ec068b..184d5491c7ed 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 +607,10 @@ 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;
}
}
@@ -669,40 +663,32 @@ 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;
- }
+ if (ret != -ENOENT)
+ return dev_err_probe(&pdev->dev, ret,
+ "Can't get 'adc' clock\n");
+
priv->aclk = NULL;
}
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;
- }
+ if (ret != -ENOENT)
+ return dev_err_probe(&pdev->dev, ret,
+ "Can't get 'bus' clock\n");
+
priv->bclk = NULL;
}
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 3eb9ebe8372f..b3f31f147347 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -1805,13 +1805,9 @@ 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..c7e0109315f8 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1473,13 +1473,9 @@ 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;
--
2.17.1
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