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From:   Kalle Valo <kvalo@codeaurora.org>
To:     ssreeela@codeaurora.org
Cc:     Lei Wang <leiwa@codeaurora.org>, Rick Wu <rwu@codeaurora.org>,
        linux-wireless@vger.kernel.org,
        Sebastian Gottschall <s.gottschall@dd-wrt.com>,
        ath10k@lists.infradead.org
Subject: Re: [PATCH] ath10k: enable VHT160 and VHT80+80 modes
References: <1585148169-2320-1-git-send-email-ssreeela@codeaurora.org>
        <20200326095907.5326BC433BA@smtp.codeaurora.org>
        <812e84a585ed3aeda9aa54f7d2b14e93@codeaurora.org>
Date:   Fri, 27 Mar 2020 13:25:10 +0200
In-Reply-To: <812e84a585ed3aeda9aa54f7d2b14e93@codeaurora.org>
        (ssreeela@codeaurora.org's message of "Thu, 26 Mar 2020 18:45:06
        +0530")
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ssreeela@codeaurora.org writes:

> On 2020-03-26 15:29, Kalle Valo wrote:
>> Sowmiya Sree Elavalagan <ssreeela@codeaurora.org> wrote:
>>
>>> From: Lei Wang <leiwa@codeaurora.org>
>>>
>>> Set right channel frequencies in VHT160 mode according to the VHT160
>>> interoperability workaround added as part of IEEE Std 802.11=E2=84=A2-2=
016 in
>>> "Table 9-252=E2=80=94VHT Operation Information subfields", band_center_=
freq2
>>> corresponds to CCFS1 in Table 9-253. Previous implementation
>>> (band_center_freq2 =3D 0 for VHT160) is only deprecated.
>>>
>>> Enable VHT80+80 mode and set the proper peer RX nss value for
>>> VHT160 and
>>> VHT80+80 mode.
>>>
>>> Based on patches by Sebastian Gottschall:
>>>
>>> https://lkml.kernel.org/r/20180704095444.662-1-s.gottschall@dd-wrt.com
>>>
>>> https://lkml.kernel.org/r/20180704120519.6479-1-s.gottschall@dd-wrt.com
>>>
>>> Tested: qca9984 with firmware ver 10.4-3.10-00047
>>>
>>> Co-developed-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
>>> Signed-off-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
>>> Co-developed-by: Rick Wu <rwu@codeaurora.org>
>>> Signed-off-by: Rick Wu <rwu@codeaurora.org>
>>> Signed-off-by: Lei Wang <leiwa@codeaurora.org>
>>> Signed-off-by: Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
>>
>> Fails to build on GCC 8.1. Did you test this?
>>
>> In file included from ./include/asm-generic/bug.h:5,
>>                  from ./arch/x86/include/asm/bug.h:83,
>>                  from ./include/linux/bug.h:5,
>>                  from ./include/net/mac80211.h:16,
>>                  from drivers/net/wireless/ath/ath10k/mac.h:10,
>>                  from drivers/net/wireless/ath/ath10k/mac.c:8:
>> In function 'ath10k_peer_assoc_h_vht',
>>     inlined from 'ath10k_peer_assoc_prepare' at
>> drivers/net/wireless/ath/ath10k/mac.c:2790:2:
>> ./include/linux/compiler.h:350:38: error: call to
>> '__compiletime_assert_2631' declared with attribute error:

[...]

> I checked the build. Build was successful with GCC version 4.8.
> Will fix the error and update the patch.

Great, thanks. Here's how I installed GCC 8.1 from crosstool:

listings: https://www.kernel.org/pub/tools/crosstool/

wget https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_=
64-gcc-8.1.0-nolibc-x86_64-linux.tar.xz
pushd /opt/cross/
tar -xf ~/tmp/crosstool/x86_64-gcc-8.1.0-nolibc-x86_64-linux.tar.xz

In top level create GNUMakefile:

CROSS_COMPILE=3D/opt/cross/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-
include Makefile

--=20
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatc=
hes