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From: Jaehoon Chung <jh80.chung@samsung.com>
To: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>, u-boot@lists.denx.de
Cc: peng.fan@nxp.com, git@xilinx.com, monstr@monstr.eu,
	somaashokreddy@gmail.com
Subject: Re: [PATCH 1/6] mmc: zynq_sdhci: Resolve uninitialized return value
Date: Fri, 9 Jul 2021 18:37:43 +0900	[thread overview]
Message-ID: <c4ca1499-6c58-1e4f-ce3c-9688ff7c56ae@samsung.com> (raw)
In-Reply-To: <20210709071716.17093-2-ashok.reddy.soma@xilinx.com>

Hi Ashok,

On 7/9/21 4:17 PM, Ashok Reddy Soma wrote:
> set_phase() functions are not modifying the ret value and returning
> the same uninitialized ret, return 0 instead.

Why didn't you change from int to void?

Best Regards,
Jaehoon Chung


> 
> Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
> ---
> 
>  drivers/mmc/zynq_sdhci.c | 24 ++++++++++--------------
>  1 file changed, 10 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
> index b79c4021b6..cb785fd735 100644
> --- a/drivers/mmc/zynq_sdhci.c
> +++ b/drivers/mmc/zynq_sdhci.c
> @@ -182,8 +182,8 @@ static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode)
>   * Set the SD Output Clock Tap Delays for Output path
>   *
>   * @host:		Pointer to the sdhci_host structure.
> - * @degrees:		The clock phase shift between 0 - 359.
> - * Return: 0 on success and error value on error
> + * @degrees		The clock phase shift between 0 - 359.
> + * Return: 0
>   */
>  static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
>  					    int degrees)
> @@ -191,7 +191,6 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
>  	struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
>  	struct mmc *mmc = (struct mmc *)host->mmc;
>  	u8 tap_delay, tap_max = 0;
> -	int ret;
>  	int timing = mode2timing[mmc->selected_mode];
>  
>  	/*
> @@ -229,7 +228,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
>  
>  	arasan_zynqmp_set_tapdelay(priv->deviceid, 0, tap_delay);
>  
> -	return ret;
> +	return 0;
>  }
>  
>  /**
> @@ -238,8 +237,8 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct sdhci_host *host,
>   * Set the SD Input Clock Tap Delays for Input path
>   *
>   * @host:		Pointer to the sdhci_host structure.
> - * @degrees:		The clock phase shift between 0 - 359.
> - * Return: 0 on success and error value on error
> + * @degrees		The clock phase shift between 0 - 359.
> + * Return: 0
>   */
>  static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
>  					    int degrees)
> @@ -247,7 +246,6 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
>  	struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev);
>  	struct mmc *mmc = (struct mmc *)host->mmc;
>  	u8 tap_delay, tap_max = 0;
> -	int ret;
>  	int timing = mode2timing[mmc->selected_mode];
>  
>  	/*
> @@ -285,7 +283,7 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
>  
>  	arasan_zynqmp_set_tapdelay(priv->deviceid, tap_delay, 0);
>  
> -	return ret;
> +	return 0;
>  }
>  
>  /**
> @@ -295,14 +293,13 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct sdhci_host *host,
>   *
>   * @host:		Pointer to the sdhci_host structure.
>   * @degrees		The clock phase shift between 0 - 359.
> - * Return: 0 on success and error value on error
> + * Return: 0
>   */
>  static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
>  					    int degrees)
>  {
>  	struct mmc *mmc = (struct mmc *)host->mmc;
>  	u8 tap_delay, tap_max = 0;
> -	int ret;
>  	int timing = mode2timing[mmc->selected_mode];
>  
>  	/*
> @@ -349,7 +346,7 @@ static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
>  		sdhci_writel(host, regval, SDHCI_ARASAN_OTAPDLY_REGISTER);
>  	}
>  
> -	return ret;
> +	return 0;
>  }
>  
>  /**
> @@ -359,14 +356,13 @@ static int sdhci_versal_sdcardclk_set_phase(struct sdhci_host *host,
>   *
>   * @host:		Pointer to the sdhci_host structure.
>   * @degrees		The clock phase shift between 0 - 359.
> - * Return: 0 on success and error value on error
> + * Return: 0
>   */
>  static int sdhci_versal_sampleclk_set_phase(struct sdhci_host *host,
>  					    int degrees)
>  {
>  	struct mmc *mmc = (struct mmc *)host->mmc;
>  	u8 tap_delay, tap_max = 0;
> -	int ret;
>  	int timing = mode2timing[mmc->selected_mode];
>  
>  	/*
> @@ -417,7 +413,7 @@ static int sdhci_versal_sampleclk_set_phase(struct sdhci_host *host,
>  		sdhci_writel(host, regval, SDHCI_ARASAN_ITAPDLY_REGISTER);
>  	}
>  
> -	return ret;
> +	return 0;
>  }
>  
>  static void arasan_sdhci_set_tapdelay(struct sdhci_host *host)
> 


  reply	other threads:[~2021-07-09  9:37 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-09  7:17 [PATCH 0/6] This patch set fixes minor issues related to tapdelays Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 1/6] mmc: zynq_sdhci: Resolve uninitialized return value Ashok Reddy Soma
2021-07-09  9:37   ` Jaehoon Chung [this message]
2021-07-09 10:15     ` Ashok Reddy Soma
2021-07-09 10:50       ` Jaehoon Chung
2021-07-09 10:57         ` Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 2/6] mmc: zynq_sdhci: Allow configuring zero Tap values Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 3/6] mmc: zynq_sdhci: Use Mask writes for Tap delays Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 4/6] mmc: zynq_sdhci: Split set_tapdelay function to in and out Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 5/6] mmc: zynq_sdhci: Fix kernel doc warnings Ashok Reddy Soma
2021-07-09  9:42   ` Jaehoon Chung
2021-07-09 10:18     ` Ashok Reddy Soma
2021-07-09  7:17 ` [PATCH 6/6] mmc: zynq_sdhci: Make variables/structure static Ashok Reddy Soma

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