diff mbox

[01/29] IB/mlx4: Use kcalloc() in mlx4_ib_alloc_pv_bufs()

Message ID e2a30e40-a7ad-585b-a694-ab1e9bd532c2@users.sourceforge.net (mailing list archive)
State Changes Requested
Headers show

Commit Message

SF Markus Elfring Feb. 18, 2017, 8:47 p.m. UTC 
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Fri, 17 Feb 2017 20:00:34 +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 "kcalloc".

  This issue was detected by using the Coccinelle software.

* 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/infiniband/hw/mlx4/mad.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Majd Dibbiny Feb. 19, 2017, 5:06 p.m. UTC | #1 
> On Feb 18, 2017, at 10:55 PM, SF Markus Elfring <elfring@users.sourceforge.net> wrote:
> 
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Fri, 17 Feb 2017 20:00:34 +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 "kcalloc".
> 
>  This issue was detected by using the Coccinelle software.
> 
> * 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/infiniband/hw/mlx4/mad.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
> index db564ccc0f92..61bd81baeb29 100644
> --- a/drivers/infiniband/hw/mlx4/mad.c
> +++ b/drivers/infiniband/hw/mlx4/mad.c
> @@ -1600,8 +1600,8 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
>        return -EINVAL;
> 
>    tun_qp = &ctx->qp[qp_type];
> -
> -    tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS,
> +    tun_qp->ring = kcalloc(MLX4_NUM_TUNNEL_BUFS,
> +                   sizeof(*tun_qp->ring),
>                   GFP_KERNEL);
>    if (!tun_qp->ring)
>        return -ENOMEM;
> -- 
> 2.11.1
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
Thanks,
Reviewed-by: Majd Dibbiny
<majd@mellanox.com> --
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index db564ccc0f92..61bd81baeb29 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -1600,8 +1600,8 @@  static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
 		return -EINVAL;
 
 	tun_qp = &ctx->qp[qp_type];
-
-	tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS,
+	tun_qp->ring = kcalloc(MLX4_NUM_TUNNEL_BUFS,
+			       sizeof(*tun_qp->ring),
 			       GFP_KERNEL);
 	if (!tun_qp->ring)
 		return -ENOMEM;