linux-kernel - Re: [PATCH 01/11] staging: wlan-ng: fix line style issue in macro WLAN_GET_FC

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Date:   Mon, 07 Nov 2016 10:57:40 -0800
From:   Joe Perches <joe@...ches.com>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>,
        gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/11] staging: wlan-ng: fix line style issue in macro
 WLAN_GET_FC_FSTYPE

On Mon, 2016-11-07 at 18:55 +0100, Sergio Paracuellos wrote:
> This patch fix the following checkpatch.pl script warning:
> WARNING: line over 80 characters
> 
> It also add spaces between or operators inside the macro to
> comply with the standard kernel coding style.
[]
> diff --git a/drivers/staging/wlan-ng/p80211hdr.h b/drivers/staging/wlan-ng/p80211hdr.h
[]
> @@ -132,7 +132,8 @@
>  /*------------------------------------------------------------*/
>  
>  #define WLAN_GET_FC_FTYPE(n)	((((u16)(n)) & (BIT(2) | BIT(3))) >> 2)
> -#define WLAN_GET_FC_FSTYPE(n)	((((u16)(n)) & (BIT(4)|BIT(5)|BIT(6)|BIT(7))) >> 4)
> +#define WLAN_GET_FC_FSTYPE(n)	((((u16)(n)) & \
> +				(BIT(4) | BIT(5) | BIT(6) | BIT(7))) >> 4)

Probably better to use GENMASK

#define WLAN_GET_FC_FTYPE(n)		((((u16)(n)) & GENMASK(3, 2)) >> 2) 
#define WLAN_GET_FC_FSTYPE(n)		((((u16)(n)) & GENMASK(7, 4)) >> 4)