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[80.56.140.230]) by smtp.gmail.com with ESMTPSA id y2-20020a056a00190200b004fa865d1fd3sm16430750pfi.86.2022.04.05.12.11.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 05 Apr 2022 12:11:13 -0700 (PDT) Message-ID: <1d8c4ab5-8952-87be-aad1-67d3cd9f4eb0@broadcom.com> Date: Tue, 5 Apr 2022 21:11:08 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [RESEND PATCH 06/11] brcmfmac: sdio: Fix undefined behavior due to shift overflowing the constant To: Borislav Petkov , Kalle Valo Cc: LKML , Arend van Spriel , Franky Lin , Hante Meuleman , "David S. Miller" , Jakub Kicinski , brcm80211-dev-list.pdl@broadcom.com, netdev@vger.kernel.org, linux-wireless@vger.kernel.org References: <20220405151517.29753-1-bp@alien8.de> <20220405151517.29753-7-bp@alien8.de> <87y20jr1qt.fsf@kernel.org> <87pmlvqye0.fsf@kernel.org> From: Arend van Spriel In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000044bd1305dbed02e9" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --00000000000044bd1305dbed02e9 Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 4/5/2022 6:55 PM, Borislav Petkov wrote: > Fix: > > drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c: In function ‘brcmf_sdio_drivestrengthinit’: > drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3798:2: error: case label does not reduce to an integer constant > case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17): > ^~~~ > drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:3809:2: error: case label does not reduce to an integer constant > case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13): > ^~~~ > > See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory > details as to why it triggers with older gccs only. 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