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[2a01:c23:c0aa:f200:2422:8cf4:48af:d322]) by smtp.googlemail.com with ESMTPSA id u10-20020a056402110a00b0046aa78ecd8asm4653991edv.3.2022.12.19.10.22.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Dec 2022 10:22:57 -0800 (PST) Message-ID: <50f333a1-2f62-4a2d-5527-7a17eb49ec68@gmail.com> Date: Mon, 19 Dec 2022 19:15:25 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: [PATCH v2 03/10] i2c: i801: make FEATURE_BLOCK_PROC dependent on FEATURE_BLOCK_BUFFER Content-Language: en-US From: Heiner Kallweit To: Jean Delvare Cc: "linux-i2c@vger.kernel.org" References: <8db86d89-d083-2a65-76a1-6db34f433604@gmail.com> In-Reply-To: <8db86d89-d083-2a65-76a1-6db34f433604@gmail.com> X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham 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-i2c@vger.kernel.org According to the datasheet the block process call requires block buffer mode. The user may disable block buffer mode by module parameter disable_features, in such a case we have to clear FEATURE_BLOCK_PROC. Signed-off-by: Heiner Kallweit Reviewed-by: Jean Delvare --- v2: - add a commit message part as comment to the code --- drivers/i2c/busses/i2c-i801.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 45c2ebe40..2e9c5856a 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1658,6 +1658,10 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id) } priv->features &= ~disable_features; + /* The block process call uses block buffer mode */ + if (!(priv->features & FEATURE_BLOCK_BUFFER)) + priv->features &= ~FEATURE_BLOCK_PROC; + err = pcim_enable_device(dev); if (err) { dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n",