linux-kernel - Re: [PATCH] staging: media: atomisp: remove useless breaks

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Date:   Fri, 7 May 2021 10:54:58 +0300
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     mchehab@...nel.org, gregkh@...uxfoundation.org,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: media: atomisp: remove useless breaks

Hi Pavel,

On Thu, May 06, 2021 at 11:09:56PM +0300, Pavel Skripkin wrote:
> Breaks are not useful after a return, they can
> simply be removed.
> 
> Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
> ---
>  .../pci/hive_isp_css_common/host/input_system.c       | 11 -----------
>  1 file changed, 11 deletions(-)
> 
> 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 0f5a231672a8..fd82997b11cc 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
> @@ -904,16 +904,12 @@ static input_system_err_t input_system_configure_channel(
>  			break;
>  		case INPUT_SYSTEM_SOURCE_TPG:
>  			return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -			break;
>  		case INPUT_SYSTEM_SOURCE_PRBS:
>  			return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -			break;
>  		case INPUT_SYSTEM_SOURCE_FIFO:
>  			return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;

While at it, you could drop the individual return statements, too. There
seems to be another such location at the end of the patch.

> -			break;
>  		default:
>  			return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -			break;
>  		}
>  
>  		if (error != INPUT_SYSTEM_ERR_NO_ERROR) return error;
> @@ -995,7 +991,6 @@ static input_system_err_t input_buffer_configuration(void)
>  			default:
>  				config.csi_buffer_flags[port] |= INPUT_SYSTEM_CFG_FLAG_CONFLICT;
>  				return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -				break;
>  			}
>  
>  			// Check acquisition buffer specified but set it later since it has to be unique.
> @@ -1032,7 +1027,6 @@ static input_system_err_t input_buffer_configuration(void)
>  
>  			default:
>  				return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -				break;
>  			}
>  		} else {
>  			config.csi_buffer_flags[port] = INPUT_SYSTEM_CFG_FLAG_BLOCKED;
> @@ -1319,7 +1313,6 @@ static input_system_err_t configuration_to_registers(void)
>  
>  	default:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -		break;
>  
>  	} // end of switch (source_type)
>  
> @@ -1696,16 +1689,12 @@ static input_system_err_t input_system_configure_channel_sensor(
>  		break;
>  	case INPUT_SYSTEM_FIFO_CAPTURE_WITH_COUNTING:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -		break;
>  	case INPUT_SYSTEM_XMEM_CAPTURE:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -		break;
>  	case INPUT_SYSTEM_XMEM_ACQUIRE:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -		break;
>  	default:
>  		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
> -		break;
>  	}
>  	return INPUT_SYSTEM_ERR_NO_ERROR;
>  }

-- 
Regards,

Sakari Ailus