[PATCH] media: i2c: fix odd_ptr_err.cocci warnings

[PATCH] media: i2c: fix odd_ptr_err.cocci warnings

[Julia Lawall]

From: kernel test robot <lkp@intel.com>

PTR_ERR should access the value just tested by IS_ERR

Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci

Fixes: 11c0d8fdccc5 ("media: i2c: Add support for the OV8865 image sensor")
CC: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b3a3cbdec55b090d22a09f75efb7c7d34cb97f25
commit: 11c0d8fdccc56fa15cb15906480b4737c31dd085 [2650/3956] media: i2c: Add support for the OV8865 image sensor
:::::: branch date: 2 days ago
:::::: commit date: 4 days ago

 ov8865.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/i2c/ov8865.c
+++ b/drivers/media/i2c/ov8865.c
@@ -2849,7 +2849,7 @@ static int ov8865_probe(struct i2c_clien
 	sensor->avdd = devm_regulator_get(dev, "avdd");
 	if (IS_ERR(sensor->avdd)) {
 		dev_err(dev, "cannot get AVDD (analog) regulator\n");
-		ret = PTR_ERR(sensor->dvdd);
+		ret = PTR_ERR(sensor->avdd);
 		goto error_endpoint;
 	}

Re: [PATCH] media: i2c: fix odd_ptr_err.cocci warnings

[Paul Kocialkowski]

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Hi,

On Sat 16 Jan 21, 21:11, Julia Lawall wrote:
> From: kernel test robot <lkp@intel.com>
> 
> PTR_ERR should access the value just tested by IS_ERR

Good catch!

Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

Cheers,

Paul

> Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci
> 
> Fixes: 11c0d8fdccc5 ("media: i2c: Add support for the OV8865 image sensor")
> CC: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
> ---
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   b3a3cbdec55b090d22a09f75efb7c7d34cb97f25
> commit: 11c0d8fdccc56fa15cb15906480b4737c31dd085 [2650/3956] media: i2c: Add support for the OV8865 image sensor
> :::::: branch date: 2 days ago
> :::::: commit date: 4 days ago
> 
>  ov8865.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/media/i2c/ov8865.c
> +++ b/drivers/media/i2c/ov8865.c
> @@ -2849,7 +2849,7 @@ static int ov8865_probe(struct i2c_clien
>  	sensor->avdd = devm_regulator_get(dev, "avdd");
>  	if (IS_ERR(sensor->avdd)) {
>  		dev_err(dev, "cannot get AVDD (analog) regulator\n");
> -		ret = PTR_ERR(sensor->dvdd);
> +		ret = PTR_ERR(sensor->avdd);
>  		goto error_endpoint;
>  	}
> 

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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Re: [PATCH] media: i2c: fix odd_ptr_err.cocci warnings

[Sakari Ailus]

On Mon, Jan 18, 2021 at 02:55:07PM +0100, Paul Kocialkowski wrote:
> Hi,
> 
> On Sat 16 Jan 21, 21:11, Julia Lawall wrote:
> > From: kernel test robot <lkp@intel.com>
> > 
> > PTR_ERR should access the value just tested by IS_ERR
> 
> Good catch!
> 
> Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>

Thanks, Julia and Paul.

A patch with similar content got recently merged:

commit 6e7cca2790a54057ddf64da7843271e192f71ca0
Author: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Date:   Wed Jan 20 09:42:38 2021 +0100

    media: i2c/ov8865.c: fix error checks using wrong variable
    
    Fix two typos: dvdd -> dovdd and dvdd -> avdd
    
    Both clearly copy-and-paste mistakes.
    
    Fixes this smatch warning:
    
    drivers/media/i2c/ov8865.c:2852 ov8865_probe() warn: passing zero to 'PTR_ERR'
    
    Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
    Reported-by: kernel test robot <lkp@intel.com>
    Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

-- 
Kind regards,

Sakari Ailus