Hi Markus,

On 15/04/17 05:04, SF Markus Elfring wrote:
> From: Markus Elfring <elfr...@users.sourceforge.net>
> Date: Fri, 14 Apr 2017 18:48:15 +0200
>
> * A multiplication for the size determination of a memory allocation
>   indicated that an array data structure should be processed.
>   Thus use the corresponding function "devm_kmalloc_array".
>
>   This issue was detected by using the Coccinelle software.
>
> * Replace the specification of a data type by a pointer dereference
>   to make the corresponding size determination a bit safer according to
>   the Linux coding style convention.
>
> * Delete the local variable "nregs" which became unnecessary with
>   this refactoring.
>
> Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
> ---
>  drivers/pinctrl/mvebu/pinctrl-armada-xp.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c 
> b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
> index b854f1ee5de5..457c54c8fed3 100644
> --- a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
> +++ b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c
> @@ -574,7 +574,6 @@ static int armada_xp_pinctrl_probe(struct platform_device 
> *pdev)
>       struct mvebu_pinctrl_soc_info *soc = &armada_xp_pinctrl_info;
>       const struct of_device_id *match =
>               of_match_device(armada_xp_pinctrl_of_match, &pdev->dev);
> -     int nregs;
>
>       if (!match)
>               return -ENODEV;
> @@ -628,10 +627,11 @@ static int armada_xp_pinctrl_probe(struct 
> platform_device *pdev)
>               break;
>       }
>
> -     nregs = DIV_ROUND_UP(soc->nmodes, MVEBU_MPPS_PER_REG);
> -
> -     mpp_saved_regs = devm_kmalloc(&pdev->dev, nregs * sizeof(u32),
> -                                   GFP_KERNEL);
> +     mpp_saved_regs = devm_kmalloc_array(&pdev->dev,
> +                                         DIV_ROUND_UP(soc->nmodes,
> +                                                      MVEBU_MPPS_PER_REG),
> +                                         sizeof(*mpp_saved_regs),
> +                                         GFP_KERNEL);

I personally think having nregs makes the code a bit more readable but 
that's just me.

With or without a change

Reviewed-by: Chris Packham <chris.pack...@alliedtelesis.co.nz>

>       if (!mpp_saved_regs)
>               return -ENOMEM;
>
>

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