Re: [PATCH] media: atomisp: restore missing 'return' statement

[Praveen Kumar]

On 02-08-2021 20:08, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> The input_system_configure_channel_sensor() function lost its final
> return code in a previous patch:
> 
> drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c: In function 'input_system_configure_channel_sensor':
> drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c:1649:1: error: control reaches end of non-void function [-Werror=return-type]
> 
> Restore what was there originally.
> 
> Fixes: 728a5c64ae5f ("media: atomisp: remove dublicate code")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
>  .../media/atomisp/pci/hive_isp_css_common/host/input_system.c   | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
> index 8e085dda0c18..712e01c37870 100644
> --- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
> +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
> @@ -1646,6 +1646,8 @@ static input_system_err_t input_system_configure_channel_sensor(
>  	default:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
>  	}
> +
> +	return INPUT_SYSTEM_ERR_NO_ERROR;

I would recommend to return "status" instead of INPUT_SYSTEM_ERR_NO_ERROR,
this will take care of sending correct return code, we encounter in different case statements.
Something like below would be better. Thanks.

-               return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
+               status = INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
        }
+       return status;

Regards,

~Praveen.