From: Alain Volmat <alain.volmat@st.com>
To: <wsa@kernel.org>, <pierre-yves.mordret@st.com>
Cc: <alexandre.torgue@st.com>, <linux-i2c@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <fabrice.gasnier@st.com>,
<krzk@kernel.org>, <h.assmann@pengutronix.de>,
<alain.volmat@st.com>
Subject: [PATCH v2 2/2] i2c: stm32: Simplify with dev_err_probe()
Date: Mon, 14 Sep 2020 12:40:34 +0200 [thread overview]
Message-ID: <1600080034-2050-3-git-send-email-alain.volmat@st.com> (raw)
In-Reply-To: <1600080034-2050-1-git-send-email-alain.volmat@st.com>
From: Krzysztof Kozlowski <krzk@kernel.org>
Common pattern of handling deferred probe can be simplified with
dev_err_probe(). Less code and the error value gets printed.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Alain Volmat <alain.volmat@st.com>
---
v2: rebased on top of patch [i2c: stm32: fix error message on upon
dma_request_chan & defer handling]
---
drivers/i2c/busses/i2c-stm32.c | 10 ++++++----
drivers/i2c/busses/i2c-stm32f4.c | 6 ++----
drivers/i2c/busses/i2c-stm32f7.c | 14 +++++---------
3 files changed, 13 insertions(+), 17 deletions(-)
diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c
index 468620db9ea5..157c64e27d0b 100644
--- a/drivers/i2c/busses/i2c-stm32.c
+++ b/drivers/i2c/busses/i2c-stm32.c
@@ -26,8 +26,9 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev,
dma->chan_tx = dma_request_chan(dev, "tx");
if (IS_ERR(dma->chan_tx)) {
ret = PTR_ERR(dma->chan_tx);
- if ((ret != -ENODEV) && (ret != -EPROBE_DEFER))
- dev_err(dev, "can't request DMA tx channel\n");
+ if (ret != -ENODEV)
+ ret = dev_err_probe(dev, ret,
+ "can't request DMA tx channel\n");
goto fail_al;
}
@@ -46,8 +47,9 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev,
dma->chan_rx = dma_request_chan(dev, "rx");
if (IS_ERR(dma->chan_rx)) {
ret = PTR_ERR(dma->chan_rx);
- if ((ret != -ENODEV) && (ret != -EPROBE_DEFER))
- dev_err(dev, "can't request DMA rx channel\n");
+ if (ret != -ENODEV)
+ ret = dev_err_probe(dev, ret,
+ "can't request DMA rx channel\n");
goto fail_tx;
}
diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c
index 48e269284369..937c2c8fd349 100644
--- a/drivers/i2c/busses/i2c-stm32f4.c
+++ b/drivers/i2c/busses/i2c-stm32f4.c
@@ -797,10 +797,8 @@ static int stm32f4_i2c_probe(struct platform_device *pdev)
rst = devm_reset_control_get_exclusive(&pdev->dev, NULL);
if (IS_ERR(rst)) {
- ret = PTR_ERR(rst);
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev, "Error: Missing reset ctrl\n");
-
+ ret = dev_err_probe(&pdev->dev, PTR_ERR(rst),
+ "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 8a61320a9cb9..0fbd964c2fe8 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -1968,11 +1968,9 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
"wakeup-source");
i2c_dev->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(i2c_dev->clk)) {
- if (PTR_ERR(i2c_dev->clk) != -EPROBE_DEFER)
- dev_err(&pdev->dev, "Failed to get controller clock\n");
- return PTR_ERR(i2c_dev->clk);
- }
+ if (IS_ERR(i2c_dev->clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(i2c_dev->clk),
+ "Failed to get controller clock\n");
ret = clk_prepare_enable(i2c_dev->clk);
if (ret) {
@@ -1982,10 +1980,8 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
rst = devm_reset_control_get(&pdev->dev, NULL);
if (IS_ERR(rst)) {
- ret = PTR_ERR(rst);
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev, "Error: Missing reset ctrl\n");
-
+ ret = dev_err_probe(&pdev->dev, PTR_ERR(rst),
+ "Error: Missing reset ctrl\n");
goto clk_free;
}
reset_control_assert(rst);
--
2.7.4
prev parent reply other threads:[~2020-09-14 10:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 10:40 [PATCH 0/2] Avoid meaningless DMA error print & use dev_err_probe Alain Volmat
2020-09-14 10:40 ` [PATCH 1/2] i2c: stm32: fix error message on upon dma_request_chan & defer handling Alain Volmat
2020-09-14 10:40 ` Alain Volmat [this message]
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