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[34.88.36.11]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3a16b204389sm12047321fa.42.2026.08.18.05.04.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2026 05:04:30 -0700 (PDT) From: Ricardo Ribalda To: dmitry.torokhov@gmail.com Cc: Julia.Lawall@inria.fr, bentiss@kernel.org, cocci@inria.fr, corbet@lwn.net, hadess@hadess.net, jikos@kernel.org, lains@riseup.net, linux-doc@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, nicolas.palix@imag.fr, skhan@linuxfoundation.org Subject: re: HID: add documentation and Coccinelle script for FF registration race Date: Tue, 18 Aug 2026 12:04:28 +0000 Message-ID: <20260818120428.2546810-1-ribalda@chromium.org> X-Mailer: git-send-email 2.55.0.699.gb54405d56f-goog In-Reply-To: <20260803-hid-ff-input-configured-v1-2-1dc9bbacd88c@gmail.com> References: <20260803-hid-ff-input-configured-v1-2-1dc9bbacd88c@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Hi Dimitry Looks like media-ci is not particularly happy about this patch: https://gitlab.freedesktop.org/linux-media/users/ribalda/-/jobs/108127901 /usr/bin/spatch -D report --no-show-diff --very-quiet --cocci-file /builds/= linux-media/users/ribalda/scripts/coccinelle/hid/ff_race.cocci --patch /bui= lds/linux-media/users/ribalda --dir . -I /builds/linux-media/users/ribalda/= arch/x86/include -I /builds/linux-media/users/ribalda/arch/x86/include/gene= rated -I /builds/linux-media/users/ribalda/include -I /builds/linux-media/u= sers/ribalda/include -I /builds/linux-media/users/ribalda/arch/x86/include/= uapi -I /builds/linux-media/users/ribalda/arch/x86/include/generated/uapi -= I /builds/linux-media/users/ribalda/include/uapi -I /builds/linux-media/use= rs/ribalda/include/generated/uapi --include /builds/linux-media/users/ribal= da/include/linux/compiler-version.h --include /builds/linux-media/users/rib= alda/include/linux/kconfig.h --jobs 16 --chunksize 1 Position variable r.p2 on line 20 must be attached to some other token usin= g @. coccicheck failed The following change fixes the issue for me... but you probably want to dou= ble check it, I am not proficient at cocci. diff --git a/scripts/coccinelle/hid/ff_race.cocci b/scripts/coccinelle/hid/= ff_race.cocci index 479f5d1e3184..7cf84936db13 100644 --- a/scripts/coccinelle/hid/ff_race.cocci +++ b/scripts/coccinelle/hid/ff_race.cocci @@ -9,7 +9,8 @@ virtual report @r@ identifier probe_fn; -expression hdev, flags; +identifier hdev; +expression flags; position p1, p2; @@ @@ -17,7 +18,7 @@ probe_fn(struct hid_device *hdev, ...) { <... hid_hw_start@p1(hdev, flags) ... - \(input_ff_create\|input_ff_create_memless\)@p2(...) + \(input_ff_create@p2\|input_ff_create_memless@p2\)(...) ...> } Regards!