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Wed, 11 Oct 2023 09:57:01 +0000 (GMT) X-AuditID: cbfec7f4-97dff70000022c38-ba-6526716e4532 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 41.74.25043.D6176256; Wed, 11 Oct 2023 10:57:01 +0100 (BST) Received: from [106.210.134.192] (unknown [106.210.134.192]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20231011095701eusmtip2b1aa6f9da8170841b9ef2d07cbd2c2ea~NBRS1uSTK1735217352eusmtip2K; Wed, 11 Oct 2023 09:57:01 +0000 (GMT) Message-ID: Date: Wed, 11 Oct 2023 11:57:00 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] i2c: brcmstb: Add support for atomic transfers Content-Language: en-US To: Florian Fainelli , linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Kamal Dasu , Broadcom internal kernel review list , Andi Shyti , Wolfram Sang From: Marek Szyprowski In-Reply-To: Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprNKsWRmVeSWpSXmKPExsWy7djP87p5hWqpBm9f81nc/9rBaLG29yiL xbpt95gtdm84zGSx6fE1VouOv18YLS7vmsNmcXf/XEYHDo9Z98+yeWxa1cnmsXlJvcfnTXIB LFFcNimpOZllqUX6dglcGeseeBbcYqu4u+8vSwPjdtYuRg4OCQETiY6HqV2MXBxCAisYJfY+ 3sUC4XxhlHh5awNTFyMnkPOZUeLIKiEQG6Rh7vGFbBBFyxkl7v24A9XxkVHi3+kL7CBVvAJ2 EkuezQBbwSKgKnFhpgJEWFDi5MwnLCC2qIC8xP1bM8DKhQWcJT43X2AEsZkFxCVuPZnPBDJT RGA6o8T395fYQRxmgb2MEnOurmYFqWITMJToetvFBrKAU8BB4t16D4hmeYntb+cwg9RLCDzg kJjce4MR4mwXiUfHzrJD2MISr45vgbJlJE5P7mGBaGhnlFjw+z4ThDOBUaLh+S2obmuJO+d+ gW1jFtCUWL9LHyLsKPHn/iU2SEDySdx4KwhxBJ/EpG3TmSHCvBIdbdCQU5OYdXwd3NqDFy4x T2BUmoUULrOQ/D8LyTuzEPYuYGRZxSieWlqcm55abJSXWq5XnJhbXJqXrpecn7uJEZh+Tv87 /mUH4/JXH/UOMTJxMB5ilOBgVhLhfZSpkirEm5JYWZValB9fVJqTWnyIUZqDRUmcVzVFPlVI ID2xJDU7NbUgtQgmy8TBKdXANPPFRWObQD7WU/0ShWV9zNL+SSHLDct6ZzDklVlWHIiqLCot s1Pnfn1Qgm/habFN19Sm5PmmWuzIY29vjnXtuT9RQ/ZC0NOq6QzsUTfOWm6TzCy4b/qmSfx8 2n63hyy2NgY134vPC/HIfl+pHnbxlbm/oB3zzqBQVrtL67brTrd4uCb/559j8x0+HLvh5hUe 7lfk/HfNVoYQq1Paq25yLd/Gn/b+8aSOKf+/zVPlXSwQ0tEfkZz48vyLusW+/amMLMKHYqIt bxrV7PbgnnLwRYA1Q9uU47/4xZpNJJXmHI3TWdTdJyG0b6K1wwHv8JeRk/e4C1tY9wdyzQ9Q Ppht25Ge//3AoxV2t9anr1FiKc5INNRiLipOBAB6guIWrgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrPIsWRmVeSWpSXmKPExsVy+t/xe7q5hWqpBi+O6Vrc/9rBaLG29yiL xbpt95gtdm84zGSx6fE1VouOv18YLS7vmsNmcXf/XEYHDo9Z98+yeWxa1cnmsXlJvcfnTXIB LFF6NkX5pSWpChn5xSW2StGGFkZ6hpYWekYmlnqGxuaxVkamSvp2NimpOZllqUX6dgl6Gese eBbcYqu4u+8vSwPjdtYuRk4OCQETibnHF7J1MXJxCAksZZT4uO0MO0RCRuLktAaoImGJP9e6 oIreM0o8bOpkAknwCthJLHk2A6iIg4NFQFXiwkwFiLCgxMmZT1hAbFEBeYn7t2aAzRQWcJb4 3HyBEcRmFhCXuPVkPhPITBGB6YwSTx/vZQFxmAX2M0q8eXyKCWLbSUaJz4degJ3BJmAo0fUW 5AwODk4BB4l36z0gJplJdG3tgpoqL7H97RzmCYxCs5AcMgvJwllIWmYhaVnAyLKKUSS1tDg3 PbfYSK84Mbe4NC9dLzk/dxMjMOa2Hfu5ZQfjylcf9Q4xMnEwHmKU4GBWEuF9lKmSKsSbklhZ lVqUH19UmpNafIjRFBgYE5mlRJPzgVGfVxJvaGZgamhiZmlgamlmrCTO61nQkSgkkJ5Ykpqd mlqQWgTTx8TBKdXAVKuf/arybPIV+YPF09SvP/GS79BNXhY3l1k5Wloj6Gzkm8m+HRGXt9Zv +hTno2U8+4HY4/tb+b+xrLi1WyLQ5VTrg99mqdMqP524keL7VkX87ExpW/t59mXnbp9atPba l/TZbyyOxrwP/7bKeeVn39NKD+N+NykcercgZmnWlP2iU5ucZWqZvv7RvfeJt4Vv2YvP08Kn 7Hw47X/ghbWcUsWt9Uc1nWbssjuS/y1BQcq3Vv77bznfFTGts1mdL1oGb5s46ZsaX3hg8sKc Y5N3yHiEXFjbIdH/zeH6NKdrXGpLudgjvDZlz3eZLN/Lfbsy+svLhcfXHhLwPzBVvG5h3dew V5+VCpWj7k0TZJwtaabEUpyRaKjFXFScCAAH9hf5QgMAAA== X-CMS-MailID: 20231011095701eucas1p1afb457ed499787c127ee798adc87a0fd X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20231006144123eucas1p111cbbdbd70927ffbd697f7edf6b7ae1c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20231006144123eucas1p111cbbdbd70927ffbd697f7edf6b7ae1c References: <20231006144117.4079796-1-m.szyprowski@samsung.com> X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Wed, 11 Oct 2023 02:57:25 -0700 (PDT) On 09.10.2023 22:41, Florian Fainelli wrote: > On 10/6/23 07:41, Marek Szyprowski wrote: >> Add support for atomic transfers using polling mode with interrupts >> intentionally disabled to get rid of the warning introduced by commit >> 63b96983a5dd ("i2c: core: introduce callbacks for atomic transfers") >> during system reboot and power-off. > > Is there an existing system that you have access to which needs atomic > transfer support, or is this a forward looking change? Frankly speaking I've observed the mentioned warning during system reboot on RaspberryPi4 with linux-next kernel compiled from multi_v7_defconfig. It looks that this driver is used by VC4 DRM for DDC. This issue doesn't look critical, but the fix seems to be trivial, thus my patch. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland