linux-kernel - Re: [PATCH 2/2] staging: rtl8723au:core

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Message-ID: <wrfj1tpuca0q.fsf@redhat.com>
Date:	Mon, 27 Oct 2014 07:16:37 +0100
From:	Jes Sorensen <Jes.Sorensen@...hat.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Paul McQuade <paulmcquad@...il.com>, linux-kernel@...r.kernel.org,
	devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org,
	gregkh@...uxfoundation.org, Larry.Finger@...inger.net
Subject: Re: [PATCH 2/2] staging: rtl8723au:core

Joe Perches <joe@...ches.com> writes:
> On Mon, 2014-10-27 at 06:45 +0100, Jes Sorensen wrote:
>> Joe Perches <joe@...ches.com> writes:
>> > On Sun, 2014-10-26 at 16:18 +0000, Paul McQuade wrote:
>> >> ERROR: spaces required around that ':' (ctx:VxE)
> []
>> >> diff --git a/drivers/staging/rtl8723au/core/rtw_ieee80211.c
>> >> b/drivers/staging/rtl8723au/core/rtw_ieee80211.c
> []
>> >> @@ -794,28 +794,28 @@ u16 rtw_mcs_rate23a(u8 rf_type, u8 bw_40MHz, u8 short_GI_20, u8 short_GI_40,
>> >>  
>> >>  	if (rf_type == RF_1T1R) {
>> >>  		if (mcs->rx_mask[0] & BIT(7))
>> >> -			max_rate = (bw_40MHz) ? ((short_GI_40)?1500:1350):
>> >> +			max_rate = (bw_40MHz) ? ((short_GI_40)?1500:1350) :
> []
>> >
>> > A macro could help intelligibility here - maybe something like:
>> >
>> > #define get_max_rate(r1, r2, r3, r4)					\
>> > 	(bw_40MHz ? (short_GI_40 ? r1 : r2) : (short_GI_20 ? r3 : r4))
>> > and:
>> >  		if (mcs->rx_mask[0] & BIT(7))
>> > 			max_rate = get_max_rate(1500, 1350, 722, 650);
>> 
>> Hiding a parameter to a macro like that is bad coding practice, so don't
>> do that please!
>
> Yes and no.
>
> Adding the other 3 arguments to the macro doesn't help legibility.
>
> Keeping the macro definition local to the place that it's used
> can help avoid typos.

It's wrong, so just don't do it here!

Thank you,
Jes
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