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SubjectRe: [PATCH 1/8] mmc-core: Use kmalloc_array() in mmc_test_area_init()
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On 2017/1/9 5:42, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sun, 8 Jan 2017 18:44:26 +0100
>
> * A multiplication for the size determination of a memory allocation
> indicated that an array data structure should be processed.
> Thus use the corresponding function "kmalloc_array".
>
> This issue was detected by using the Coccinelle software.
>

Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>

> * Replace the specification of a data structure by a pointer dereference
> to make the corresponding size determination a bit safer according to
> the Linux coding style convention.
>
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
> drivers/mmc/core/mmc_test.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c
> index 3ab6e52d106c..e85ef503d7ce 100644
> --- a/drivers/mmc/core/mmc_test.c
> +++ b/drivers/mmc/core/mmc_test.c
> @@ -1579,7 +1579,7 @@ static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
> if (!t->mem)
> return -ENOMEM;
>
> - t->sg = kmalloc(sizeof(struct scatterlist) * t->max_segs, GFP_KERNEL);
> + t->sg = kmalloc_array(t->max_segs, sizeof(*t->sg), GFP_KERNEL);
> if (!t->sg) {
> ret = -ENOMEM;
> goto out_free;
>


--
Best Regards
Shawn Lin

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