From nobody Fri Dec 19 20:36:43 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6FB07285CBC; Thu, 6 Nov 2025 15:27:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762442851; cv=none; b=BGP3QmW6JeTHjI7Bg61ewtlnD3QFk8huAVlB2n8elUjTVGgmJunH5NoViJtRc1cZJWPZYFXI5pgi49/sJJSFhG4WICPpLxZw6dZWJ5h9Cw2dzdVOP37+RHmGrpHebdLWX/ObIZWx6CKHCLkydKJlQd1Y8gHU74SVoXdZurxSL7Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762442851; c=relaxed/simple; bh=GZJO0mqOhLSQMonvKqfXrhL4G4CZm9kSIbw5nb64HL8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TULf/hCVdkZJ+vG2Nyn6y9k6YsdmMr0WwuXzW/xFFK+8lIHQ2o5SglyJIGYg7CqOmYIEFZIQv0+zsT5SlS6TCe8GLwUwN5ElfOaOH1iFnuhl7IxNtWENJfnMqIZuUnbqTV7TSsC7q6Ji6TjJWaMUtkSFxPjmqvOAFeAmcIf9dI8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fVgZ3Vcg; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fVgZ3Vcg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2DA66C19422; Thu, 6 Nov 2025 15:27:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762442851; bh=GZJO0mqOhLSQMonvKqfXrhL4G4CZm9kSIbw5nb64HL8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fVgZ3VcgXUm1Vfifg+nUACrb949rRQWgwqaLhzAU+BpUX0a8E5VKAExuwogu3RmcU z3wYAFpND5Lw37fEcgUHyI3n0AlBU+RHpQozNY5vQSSvyqstLI+JJwwExc3xitCW2m /IGoTvjILYVg+cDeY6YkLMEVNK3AaU/MlvF1g1QcxAh9zMr6WnWXX8mhGhkFxCIdxJ o4TZ7VFYicnKdoqNiBSqJmWTHPNhCgLjNMFFkD5CBqnmwxqe+RfqKXA4Tb55vuCwAp wR1G2JwOv8uTn5ad+u0kAFuEn4tsoRn4oGqHPkMF+XQjE1UrChlicyFZ01YqLNspdG bR1YV9pAe9JWA== From: Tzung-Bi Shih To: Benson Leung , Greg Kroah-Hartman , "Rafael J . Wysocki" , Danilo Krummrich Cc: Jonathan Corbet , Shuah Khan , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, chrome-platform@lists.linux.dev, linux-kselftest@vger.kernel.org, tzungbi@kernel.org, Laurent Pinchart , Bartosz Golaszewski , Wolfram Sang , Simona Vetter , Dan Williams , Jason Gunthorpe Subject: [PATCH v6 3/3] platform/chrome: cros_ec_chardev: Secure cros_ec_device via revocable Date: Thu, 6 Nov 2025 23:27:12 +0800 Message-ID: <20251106152712.11850-4-tzungbi@kernel.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251106152712.11850-1-tzungbi@kernel.org> References: <20251106152712.11850-1-tzungbi@kernel.org> 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" Miscdevice now supports revocable fops replacement. Use it to secure the cros_ec_device is available. Signed-off-by: Tzung-Bi Shih --- v6: - Modify the API usage accordingly. v5: https://lore.kernel.org/chrome-platform/20251016054204.1523139-8-tzungb= i@kernel.org - No primary changes but modify the API usage accordingly. v4: https://lore.kernel.org/chrome-platform/20250923075302.591026-8-tzungbi= @kernel.org drivers/platform/chrome/cros_ec_chardev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/c= hrome/cros_ec_chardev.c index c9d80ad5b57e..a7543e1bc07a 100644 --- a/drivers/platform/chrome/cros_ec_chardev.c +++ b/drivers/platform/chrome/cros_ec_chardev.c @@ -385,6 +385,7 @@ static int cros_ec_chardev_probe(struct platform_device= *pdev) misc->fops =3D &chardev_fops; misc->name =3D ec_platform->ec_name; misc->parent =3D pdev->dev.parent; + misc->revocable =3D true; =20 dev_set_drvdata(&pdev->dev, misc); =20 --=20 2.48.1