[PATCH] Input: lpc32xx-keys - Make use of the helper function dev_err_probe()

Subsystems: input (keyboard, mouse, joystick, touchscreen) drivers, the rest

STALE1852d

2 messages, 2 authors, 2021-09-16 · open the first message on its own page

[PATCH] Input: lpc32xx-keys - Make use of the helper function dev_err_probe()

From: Cai Huoqing <hidden>
Date: 2021-09-16 15:33:35

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <redacted>
---
 drivers/input/keyboard/lpc32xx-keys.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/input/keyboard/lpc32xx-keys.c b/drivers/input/keyboard/lpc32xx-keys.c
index 943aeeb0de79..12bdf68b8fe7 100644
--- a/drivers/input/keyboard/lpc32xx-keys.c
+++ b/drivers/input/keyboard/lpc32xx-keys.c
@@ -227,10 +227,9 @@ static int lpc32xx_kscan_probe(struct platform_device *pdev)
 
 	/* Get the key scanner clock */
 	kscandat->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(kscandat->clk)) {
-		dev_err(&pdev->dev, "failed to get clock\n");
-		return PTR_ERR(kscandat->clk);
-	}
+	if (IS_ERR(kscandat->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(kscandat->clk),
+				     "failed to get clock\n");
 
 	/* Configure the key scanner */
 	error = clk_prepare_enable(kscandat->clk);
-- 
2.25.1


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Re: [PATCH] Input: lpc32xx-keys - Make use of the helper function dev_err_probe()

From: Vladimir Zapolskiy <vz@mleia.com>
Date: 2021-09-16 20:08:40

Hi Cai,

On 9/16/21 6:33 PM, Cai Huoqing wrote:
quoted hunk
When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <redacted>
---
  drivers/input/keyboard/lpc32xx-keys.c | 7 +++----
  1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/input/keyboard/lpc32xx-keys.c b/drivers/input/keyboard/lpc32xx-keys.c
index 943aeeb0de79..12bdf68b8fe7 100644
--- a/drivers/input/keyboard/lpc32xx-keys.c
+++ b/drivers/input/keyboard/lpc32xx-keys.c
@@ -227,10 +227,9 @@ static int lpc32xx_kscan_probe(struct platform_device *pdev)
  
  	/* Get the key scanner clock */
  	kscandat->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(kscandat->clk)) {
-		dev_err(&pdev->dev, "failed to get clock\n");
-		return PTR_ERR(kscandat->clk);
-	}
+	if (IS_ERR(kscandat->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(kscandat->clk),
+				     "failed to get clock\n");
  
  	/* Configure the key scanner */
  	error = clk_prepare_enable(kscandat->clk);
thank you for the change!

Acked-by: Vladimir Zapolskiy <vz@mleia.com>

--
Best wishes,
Vladimir

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