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Re: [PATCH v2 09/25] mtd: nand: qcom: remove memset for clearing read register buffer

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  Re: [PATCH v2 09/25] mtd: nand: qcom: remove memset for clearing  read register buffer Boris Brezillon <boris.brezillon@free-electrons.com> - 2017-08-04 09:50 +0200

#1703749 — Re: [PATCH v2 09/25] mtd: nand: qcom: remove memset for clearing read register buffer

On Wed, 19 Jul 2017 17:17:57 +0530
Abhishek Sahu <absahu@codeaurora.org> wrote:

> The memset in clear_read_regs is overhead. All the register data
> will be filled by DMA during NAND operation so making these
> register variables zero is not required.
> 

Applied.

Thanks,

Boris

> Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
> ---
>  drivers/mtd/nand/qcom_nandc.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c
> index 5b71478..7ecd0f8 100644
> --- a/drivers/mtd/nand/qcom_nandc.c
> +++ b/drivers/mtd/nand/qcom_nandc.c
> @@ -826,8 +826,6 @@ static void free_descs(struct qcom_nand_controller *nandc)
>  static void clear_read_regs(struct qcom_nand_controller *nandc)
>  {
>  	nandc->reg_read_pos = 0;
> -	memset(nandc->reg_read_buf, 0,
> -	       MAX_REG_RD * sizeof(*nandc->reg_read_buf));
>  }
>  
>  static void pre_command(struct qcom_nand_host *host, int command)

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