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[72.194.116.95]) by smtp.gmail.com with ESMTPSA id c74-20020a621c4d000000b00505be1ae39bsm11591013pfc.9.2022.04.13.10.00.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 Apr 2022 10:00:56 -0700 (PDT) Message-ID: <3f4972d1-ace1-0260-16e6-84fd0f475273@gmail.com> Date: Wed, 13 Apr 2022 10:00:54 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH] net: bcmgenet: Revert "Use stronger register read/writes to assure ordering" Content-Language: en-US To: Jeremy Linton , netdev@vger.kernel.org Cc: opendmb@gmail.com, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, pbrobinson@gmail.com, bcm-kernel-feedback-list@broadcom.com, linux-kernel@vger.kernel.org References: <20220412210420.1129430-1-jeremy.linton@arm.com> From: Florian Fainelli In-Reply-To: <20220412210420.1129430-1-jeremy.linton@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/12/2022 2:04 PM, Jeremy Linton wrote: > It turns out after digging deeper into this bug, that it was being > triggered by GCC12 failing to call the bcmgenet_enable_dma() > routine. Given that a gcc12 fix has been merged [1] and the genet > driver now works properly when built with gcc12, this commit should > be reverted. > > [1] > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105160 > https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=aabb9a261ef060cf24fd626713f1d7d9df81aa57 > > Fixes: 8d3ea3d402db ("net: bcmgenet: "Use stronger register read/writes to assure ordering") > Signed-off-by: Jeremy Linton Acked-by: Florian Fainelli -- Florian