linux-kernel - Re: [PATCH V1] mmc: sdhci-uhs2: remove unnecessary variables

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Message-ID: <9507bd21-e0ad-4bb0-b3f1-747201e28280@intel.com>
Date: Wed, 30 Oct 2024 14:45:58 +0200
From: Adrian Hunter <adrian.hunter@...el.com>
To: Victor Shih <victorshihgli@...il.com>, ulf.hansson@...aro.org
Cc: linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
 benchuanggli@...il.com, HL.Liu@...esyslogic.com.tw,
 Greg.tu@...esyslogic.com.tw, kernel test robot <lkp@...el.com>,
 Ben Chuang <ben.chuang@...esyslogic.com.tw>,
 Victor Shih <victor.shih@...esyslogic.com.tw>
Subject: Re: [PATCH V1] mmc: sdhci-uhs2: remove unnecessary variables

On 30/10/24 13:22, Victor Shih wrote:
> From: Victor Shih <victor.shih@...esyslogic.com.tw>
> 
> There are unnecessary variables in the sdhci_uhs2_send_command()
> that will generate a warning when building the kernel.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202410252107.y9EgrTbA-lkp@intel.com/
> Signed-off-by: Ben Chuang <ben.chuang@...esyslogic.com.tw>
> Signed-off-by: Victor Shih <victor.shih@...esyslogic.com.tw>

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
>  drivers/mmc/host/sdhci-uhs2.c | 25 -------------------------
>  1 file changed, 25 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
> index c488c6d56015..43820eb5a7ea 100644
> --- a/drivers/mmc/host/sdhci-uhs2.c
> +++ b/drivers/mmc/host/sdhci-uhs2.c
> @@ -684,7 +684,6 @@ static void __sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_comman
>  
>  static bool sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_command *cmd)
>  {
> -	int flags;
>  	u32 mask;
>  	unsigned long timeout;
>  
> @@ -714,30 +713,6 @@ static bool sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_command
>  
>  	sdhci_uhs2_set_transfer_mode(host, cmd);
>  
> -	if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
> -		WARN_ONCE(1, "Unsupported response type!\n");
> -		/*
> -		 * This does not happen in practice because 136-bit response
> -		 * commands never have busy waiting, so rather than complicate
> -		 * the error path, just remove busy waiting and continue.
> -		 */
> -		cmd->flags &= ~MMC_RSP_BUSY;
> -	}
> -
> -	if (!(cmd->flags & MMC_RSP_PRESENT))
> -		flags = SDHCI_CMD_RESP_NONE;
> -	else if (cmd->flags & MMC_RSP_136)
> -		flags = SDHCI_CMD_RESP_LONG;
> -	else if (cmd->flags & MMC_RSP_BUSY)
> -		flags = SDHCI_CMD_RESP_SHORT_BUSY;
> -	else
> -		flags = SDHCI_CMD_RESP_SHORT;
> -
> -	if (cmd->flags & MMC_RSP_CRC)
> -		flags |= SDHCI_CMD_CRC;
> -	if (cmd->flags & MMC_RSP_OPCODE)
> -		flags |= SDHCI_CMD_INDEX;
> -
>  	timeout = jiffies;
>  	if (host->data_timeout)
>  		timeout += nsecs_to_jiffies(host->data_timeout);