linux-kernel - Re: [PATCH 5/8] mfd: rtsx: Simplify function return logic

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Message-ID: <20151001071954.GF3214@x1>
Date:	Thu, 1 Oct 2015 08:19:54 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Javier Martinez Canillas <javier@....samsung.com>
Cc:	linux-kernel@...r.kernel.org, Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH 5/8] mfd: rtsx: Simplify function return logic

On Tue, 29 Sep 2015, Javier Martinez Canillas wrote:

> The invoked functions already return zero on success or a negative
> errno code so there is no need to open code the logic in the caller.
> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> ---
> 
>  drivers/mfd/rts5209.c  | 6 +-----
>  drivers/mfd/rts5227.c  | 6 +-----
>  drivers/mfd/rts5229.c  | 6 +-----
>  drivers/mfd/rts5249.c  | 6 +-----
>  drivers/mfd/rtsx_pcr.c | 6 +-----
>  5 files changed, 5 insertions(+), 25 deletions(-)

Applied, thanks.

> diff --git a/drivers/mfd/rts5209.c b/drivers/mfd/rts5209.c
> index 373e253c33df..b95beecf767f 100644
> --- a/drivers/mfd/rts5209.c
> +++ b/drivers/mfd/rts5209.c
> @@ -138,11 +138,7 @@ static int rts5209_card_power_on(struct rtsx_pcr *pcr, int card)
>  	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, pwr_mask, pwr_on);
>  	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
>  			LDO3318_PWR_MASK, 0x00);
> -	err = rtsx_pci_send_cmd(pcr, 100);
> -	if (err < 0)
> -		return err;
> -
> -	return 0;
> +	return rtsx_pci_send_cmd(pcr, 100);
>  }
>  
>  static int rts5209_card_power_off(struct rtsx_pcr *pcr, int card)
> diff --git a/drivers/mfd/rts5227.c b/drivers/mfd/rts5227.c
> index ce012d78ce2a..c5a65298c781 100644
> --- a/drivers/mfd/rts5227.c
> +++ b/drivers/mfd/rts5227.c
> @@ -179,11 +179,7 @@ static int rts5227_card_power_on(struct rtsx_pcr *pcr, int card)
>  			SD_POWER_MASK, SD_POWER_ON);
>  	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
>  			LDO3318_PWR_MASK, 0x06);
> -	err = rtsx_pci_send_cmd(pcr, 100);
> -	if (err < 0)
> -		return err;
> -
> -	return 0;
> +	return rtsx_pci_send_cmd(pcr, 100);
>  }
>  
>  static int rts5227_card_power_off(struct rtsx_pcr *pcr, int card)
> diff --git a/drivers/mfd/rts5229.c b/drivers/mfd/rts5229.c
> index ace45384ec8b..9ed9dc84eac8 100644
> --- a/drivers/mfd/rts5229.c
> +++ b/drivers/mfd/rts5229.c
> @@ -129,11 +129,7 @@ static int rts5229_card_power_on(struct rtsx_pcr *pcr, int card)
>  			SD_POWER_MASK, SD_POWER_ON);
>  	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
>  			LDO3318_PWR_MASK, 0x06);
> -	err = rtsx_pci_send_cmd(pcr, 100);
> -	if (err < 0)
> -		return err;
> -
> -	return 0;
> +	return rtsx_pci_send_cmd(pcr, 100);
>  }
>  
>  static int rts5229_card_power_off(struct rtsx_pcr *pcr, int card)
> diff --git a/drivers/mfd/rts5249.c b/drivers/mfd/rts5249.c
> index eb2d5866f719..40f8bb14fc59 100644
> --- a/drivers/mfd/rts5249.c
> +++ b/drivers/mfd/rts5249.c
> @@ -234,11 +234,7 @@ static int rtsx_base_card_power_on(struct rtsx_pcr *pcr, int card)
>  			SD_POWER_MASK, SD_VCC_POWER_ON);
>  	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
>  			LDO3318_PWR_MASK, 0x06);
> -	err = rtsx_pci_send_cmd(pcr, 100);
> -	if (err < 0)
> -		return err;
> -
> -	return 0;
> +	return rtsx_pci_send_cmd(pcr, 100);
>  }
>  
>  static int rtsx_base_card_power_off(struct rtsx_pcr *pcr, int card)
> diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
> index a66540a49079..b98cf1de0a55 100644
> --- a/drivers/mfd/rtsx_pcr.c
> +++ b/drivers/mfd/rtsx_pcr.c
> @@ -571,11 +571,7 @@ static int rtsx_pci_set_pull_ctl(struct rtsx_pcr *pcr, const u32 *tbl)
>  		tbl++;
>  	}
>  
> -	err = rtsx_pci_send_cmd(pcr, 100);
> -	if (err < 0)
> -		return err;
> -
> -	return 0;
> +	return rtsx_pci_send_cmd(pcr, 100);
>  }
>  
>  int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card)

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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