[PATCH] backlight: adp5520: fix error handling in adp5520_bl_probe()

Subsystems: adp5520 backlight driver with io expander (adp5520/adp5501), backlight class/subsystem, framebuffer layer, the rest

STALE3652d

3 messages, 3 authors, 2016-08-05 · open the first message on its own page

[PATCH] backlight: adp5520: fix error handling in adp5520_bl_probe()

From: Alexey Khoroshilov <hidden>
Date: 2016-07-08 22:20:08

If adp5520_bl_setup() fails, sysfs group left unremoved.

By the way, fix overcomplicated assignement of error code.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <redacted>
---
 drivers/video/backlight/adp5520_bl.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index dd88ba1d71ce..35373e2065b2 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c

@@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, bl);
-	ret |= adp5520_bl_setup(bl);
+	ret = adp5520_bl_setup(bl);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup\n");
+		if (data->pdata->en_ambl_sens)
+			sysfs_remove_group(&bl->dev.kobj,
+					&adp5520_bl_attr_group);
+		return ret;
+	}
+
 	backlight_update_status(bl);
 
-	return ret;
+	return 0;
 }
 
 static int adp5520_bl_remove(struct platform_device *pdev)

-- 
1.9.1

Re: [PATCH] backlight: adp5520: fix error handling in adp5520_bl_probe()

From: Michael Hennerich <michael.hennerich@analog.com>
Date: 2016-07-11 11:00:44

On 09.07.2016 00:19, Alexey Khoroshilov wrote:

If adp5520_bl_setup() fails, sysfs group left unremoved.

By the way, fix overcomplicated assignement of error code.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <redacted>

Acked-by: Michael Hennerich <michael.hennerich@analog.com>

quoted hunk

---
  drivers/video/backlight/adp5520_bl.c | 12 ++++++++++--
  1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index dd88ba1d71ce..35373e2065b2 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c

@@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platform_device *pdev)
  	}

  	platform_set_drvdata(pdev, bl);
-	ret |= adp5520_bl_setup(bl);
+	ret = adp5520_bl_setup(bl);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup\n");
+		if (data->pdata->en_ambl_sens)
+			sysfs_remove_group(&bl->dev.kobj,
+					&adp5520_bl_attr_group);
+		return ret;
+	}
+
  	backlight_update_status(bl);

-	return ret;
+	return 0;
  }

  static int adp5520_bl_remove(struct platform_device *pdev)


-- 
Greetings,
Michael

--
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Geschäftsführer: Peter Kolberg, Ali Raza Husain, Eileen Wynne

Re: [PATCH] backlight: adp5520: fix error handling in adp5520_bl_probe()

From: Lee Jones <hidden>
Date: 2016-08-05 13:28:23

On Sat, 09 Jul 2016, Alexey Khoroshilov wrote:

If adp5520_bl_setup() fails, sysfs group left unremoved.

By the way, fix overcomplicated assignement of error code.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <redacted>
---
 drivers/video/backlight/adp5520_bl.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

Applied, thanks.

quoted hunk

diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index dd88ba1d71ce..35373e2065b2 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c

@@ -332,10 +332,18 @@ static int adp5520_bl_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, bl);
-	ret |= adp5520_bl_setup(bl);
+	ret = adp5520_bl_setup(bl);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup\n");
+		if (data->pdata->en_ambl_sens)
+			sysfs_remove_group(&bl->dev.kobj,
+					&adp5520_bl_attr_group);
+		return ret;
+	}
+
 	backlight_update_status(bl);
 
-	return ret;
+	return 0;
 }
 
 static int adp5520_bl_remove(struct platform_device *pdev)

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â”‚ Open source software for ARM SoCs
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