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Sat, 31 Jan 2026 17:49:18 -0800 (PST) Date: Sun, 1 Feb 2026 01:49:15 +0000 From: Dmitry Torokhov To: Griffin Kroah-Hartman Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Luca Weiss , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH v2 2/3] Input: aw86938 - add driver for Awinic AW86938 Message-ID: References: <20260128-aw86938-driver-v2-0-b51ee086aaf5@fairphone.com> <20260128-aw86938-driver-v2-2-b51ee086aaf5@fairphone.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260128-aw86938-driver-v2-2-b51ee086aaf5@fairphone.com> Hi Griffin, On Wed, Jan 28, 2026 at 04:51:14PM +0100, Griffin Kroah-Hartman wrote: > @@ -717,9 +746,19 @@ static int aw86927_detect(struct aw86927_data *haptics) > > chip_id = be16_to_cpu(read_buf); > > - if (chip_id != AW86927_CHIPID) { > - dev_err(haptics->dev, "Unexpected CHIPID value 0x%x\n", chip_id); > - return -ENODEV; > + switch (haptics->model) { > + case AW86927: > + if (chip_id != AW86927_CHIPID) { > + dev_err(haptics->dev, "Unexpected CHIPID value 0x%x\n", chip_id); > + return -ENODEV; > + } If we are able to query chip ID why do we need to have separate compatibles? I would define chip data structure with differences between variants and assign and use it instead of having separate compatible. Thanks. -- Dmitry