linux-kernel - Re: [Outreachy kernel] [PATCH v2] staging: rtl8723bs: use DIV_ROUND

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.21.1910132126290.2565@hadrien>
Date:   Sun, 13 Oct 2019 21:31:13 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Wambui Karuga <wambui.karugax@...il.com>
cc:     outreachy-kernel@...glegroups.com, gregkh@...uxfoundation.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        eric@...olt.net, wahrenst@....net,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [Outreachy kernel] [PATCH v2] staging: rtl8723bs: use DIV_ROUND_UP
 helper macro



On Sun, 13 Oct 2019, Wambui Karuga wrote:

> Use the DIV_ROUND_UP macro to replace open-coded divisor calculation
> to improve readability.
> Issue found using coccinelle:
> @@
> expression n,d;
> @@
> (
> - ((n + d - 1) / d)
> + DIV_ROUND_UP(n,d)
> |
> - ((n + (d - 1)) / d)
> + DIV_ROUND_UP(n,d)
> )
>
> Signed-off-by: Wambui Karuga <wambui.karugax@...il.com>

Acked-by: Julia Lawall <julia.lawall@...6.fr>

> ---
> Changes in v2:
>   - Remove comment that explained previously used calculation.

Maybe it is not very important for a comment, but remember that what is
below the --- will disappear in the history.  So when actual code changes,
it may be necessary to integrate the extended change in the commit log as
well as putting it in the v2 changes.

julia


> ---
>  drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
> index 87535a4c2e14..22931ab3a5fc 100644
> --- a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
> +++ b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
> @@ -4156,9 +4156,8 @@ void SetHwReg8723B(struct adapter *padapter, u8 variable, u8 *val)
>  				break;
>  			}
>
> -			/*  The value of ((usNavUpper + HAL_NAV_UPPER_UNIT_8723B - 1) / HAL_NAV_UPPER_UNIT_8723B) */
> -			/*  is getting the upper integer. */
> -			usNavUpper = (usNavUpper + HAL_NAV_UPPER_UNIT_8723B - 1) / HAL_NAV_UPPER_UNIT_8723B;
> +			usNavUpper = DIV_ROUND_UP(usNavUpper,
> +						  HAL_NAV_UPPER_UNIT_8723B);
>  			rtw_write8(padapter, REG_NAV_UPPER, (u8)usNavUpper);
>  		}
>  		break;
> --
> 2.23.0
>
> --
> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@...glegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/20191013191027.6470-1-wambui.karugax%40gmail.com.
>