linux-kernel - Re: [PATCH v1] IB/qib: Use max() macro

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Message-ID: <8a113fab-d58b-42e2-9c7c-e84dd2f27d99@cornelisnetworks.com>
Date: Tue, 27 Aug 2024 11:00:11 -0400
From: Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>
To: Shen Lichuan <shenlichuan@...o.com>, jgg@...pe.ca, leon@...nel.org
Cc: linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org,
 opensource.kernel@...o.com
Subject: Re: [PATCH v1] IB/qib: Use max() macro

On 8/27/24 4:22 AM, Shen Lichuan wrote:
> Use the max() macro to simplify the function and improve
> its readability.
> 
> Signed-off-by: Shen Lichuan <shenlichuan@...o.com>
> ---
>  drivers/infiniband/hw/qib/qib_iba7220.c | 2 +-
>  drivers/infiniband/hw/qib/qib_iba7322.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
> index 78dfe98ebcf7..4c96b66a93b5 100644
> --- a/drivers/infiniband/hw/qib/qib_iba7220.c
> +++ b/drivers/infiniband/hw/qib/qib_iba7220.c
> @@ -4094,7 +4094,7 @@ static int qib_init_7220_variables(struct qib_devdata *dd)
>  	updthresh = 8U; /* update threshold */
>  	if (dd->flags & QIB_HAS_SEND_DMA) {
>  		dd->cspec->sdmabufcnt =  dd->piobcnt4k;
> -		sbufs = updthresh > 3 ? updthresh : 3;
> +		sbufs = max(updthresh, 3);
>  	} else {
>  		dd->cspec->sdmabufcnt = 0;
>  		sbufs = dd->piobcnt4k;
> diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
> index 9db29916e35a..5a059ec08780 100644
> --- a/drivers/infiniband/hw/qib/qib_iba7322.c
> +++ b/drivers/infiniband/hw/qib/qib_iba7322.c
> @@ -6633,7 +6633,7 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
>  	 */
>  	if (dd->flags & QIB_HAS_SEND_DMA) {
>  		dd->cspec->sdmabufcnt = dd->piobcnt4k;
> -		sbufs = updthresh > 3 ? updthresh : 3;
> +		sbufs = max(updthresh, 3);
>  	} else {
>  		dd->cspec->sdmabufcnt = 0;
>  		sbufs = dd->piobcnt4k;

I don't see how this improves readability or makes the function simpler. I'm not
opposed to it, just don't see it as an improvement.

-Denny