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Re: [PATCH 2/5] IB/qib: Use kmalloc_array() in qib_init_7322_variables()

From Yuval Shaia <yuval.shaia@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH 2/5] IB/qib: Use kmalloc_array() in qib_init_7322_variables()
Date 2017-04-05 16:30 +0200
Message-ID <tsU6B-3Kb-1@gated-at.bofh.it> (permalink)
References <tsTDz-3ln-1@gated-at.bofh.it> <tsTDA-3ln-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Apr 05, 2017 at 03:52:48PM +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Wed, 5 Apr 2017 09:51:33 +0200
> 
> Multiplications for the size determination of memory allocations
> indicated that array data structures should be processed.
> Thus use the corresponding function "kmalloc_array".
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
>  drivers/infiniband/hw/qib/qib_iba7322.c | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
> index e4e4e675c89c..490f432809b8 100644
> --- a/drivers/infiniband/hw/qib/qib_iba7322.c
> +++ b/drivers/infiniband/hw/qib/qib_iba7322.c
> @@ -6442,12 +6442,15 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
>  	sbufcnt = dd->piobcnt2k + dd->piobcnt4k +
>  		NUM_VL15_BUFS + BITS_PER_LONG - 1;
>  	sbufcnt /= BITS_PER_LONG;
> -	dd->cspec->sendchkenable = kmalloc(sbufcnt *
> -		sizeof(*dd->cspec->sendchkenable), GFP_KERNEL);
> -	dd->cspec->sendgrhchk = kmalloc(sbufcnt *
> -		sizeof(*dd->cspec->sendgrhchk), GFP_KERNEL);
> -	dd->cspec->sendibchk = kmalloc(sbufcnt *
> -		sizeof(*dd->cspec->sendibchk), GFP_KERNEL);
> +	dd->cspec->sendchkenable = kmalloc_array(sbufcnt,
> +						 sizeof(*dd->cspec->sendchkenable),
> +						 GFP_KERNEL);
> +	dd->cspec->sendgrhchk = kmalloc_array(sbufcnt,
> +					      sizeof(*dd->cspec->sendgrhchk),
> +					      GFP_KERNEL);
> +	dd->cspec->sendibchk = kmalloc_array(sbufcnt,
> +					     sizeof(*dd->cspec->sendibchk),
> +					     GFP_KERNEL);
>  	if (!dd->cspec->sendchkenable || !dd->cspec->sendgrhchk ||
>  		!dd->cspec->sendibchk) {
>  		ret = -ENOMEM;

Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>

> -- 
> 2.12.2
> 
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[PATCH 0/5] IB/qib: Fine-tuning for four function implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:00 +0200
  [PATCH 2/5] IB/qib: Use kmalloc_array() in qib_init_7322_variables() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:00 +0200
    Re: [PATCH 2/5] IB/qib: Use kmalloc_array() in  qib_init_7322_variables() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-05 16:30 +0200
  [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:00 +0200
    Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-05 16:40 +0200
      Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 17:00 +0200
        Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs() Johannes Thumshirn <jthumshirn@suse.de> - 2017-04-05 17:10 +0200
          Re: [PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-05 17:20 +0200
  [PATCH 3/5] IB/qib: Use kcalloc() in qib_alloc_devdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:00 +0200
  [PATCH 4/5] IB/qib: Use kcalloc() in qib_init_pportdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:00 +0200
  [PATCH 5/5] IB/qib: Adjust two size determinations in  qib_init_pportdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 16:10 +0200
    Re: [PATCH 5/5] IB/qib: Adjust two size determinations in  qib_init_pportdata() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-05 16:40 +0200
      Re: [PATCH 5/5] IB/qib: Adjust two size determinations in  qib_init_pportdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 17:10 +0200
        Re: [PATCH 5/5] IB/qib: Adjust two size determinations in  qib_init_pportdata() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-05 17:20 +0200
          Re: IB/qib: Adjust two size determinations in qib_init_pportdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-05 17:30 +0200
            Re: IB/qib: Adjust two size determinations in qib_init_pportdata() Yuval Shaia <yuval.shaia@oracle.com> - 2017-04-06 21:50 +0200
              Re: IB/qib: Adjust two size determinations in qib_init_pportdata() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-04-06 22:40 +0200
    Re: [PATCH 5/5] IB/qib: Adjust two size determinations in  qib_init_pportdata() Bart Van Assche <Bart.VanAssche@sandisk.com> - 2017-04-05 17:20 +0200
  Re: [PATCH 0/5] IB/qib: Fine-tuning for four function implementations Dennis Dalessandro <dennis.dalessandro@intel.com> - 2017-04-06 02:40 +0200

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