From nobody Sun Dec 14 14:09:12 2025 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 ED3C62D46B1 for ; Wed, 29 Oct 2025 08:12:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761725545; cv=none; b=vCmbhj0OhaYItnUnnOpPLANbvm+ZIEDK3DbwEvRUtsPXs9irnv1+/DPX2CgDptACVaQy5pG+vuIZTNel8Es0Wr1LE4mp9kcqrdMbl5Y5rTF2L+A+/HqRHeUpv6GG5aNJ5wqsgt/GVILRreNZ0QZzPsZMDswZnh4pIo9ptwDfVY0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761725545; c=relaxed/simple; bh=4HQ+oUujCPeT8uI7nX/NsoBt7w0I2vvre4qc0JB8GYk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=knGCWOzVWKR31TAJjCwWGxpDuuZPUcdRFZcLVD1NO7iIj7nsFJrxEo/jpVEfyxLF2lszpzv7fLjK6CObW9npbxtwjWxVX9EFbeKiJ6feVA7NNDHIoTF32AwAEnoTaQmqtK4+bieiL7yubUEk/0Iminb5z1AgAIqBgZSoAUTNeUc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=gNUrkF03; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="gNUrkF03" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1761725540; bh=4HQ+oUujCPeT8uI7nX/NsoBt7w0I2vvre4qc0JB8GYk=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=gNUrkF03iHqp9nzsuJ9prig5meibKL898LlFCH3Xnm8gE0A5ySXEC+3/MUjhFbsVL y1ze0EPWbYfyLcgqKur5MaAjKNjTHgXDFmFXqTrstS6OQhJUWGalMGk3DX6ShAQpMq D1HzoIXk008EyRTo7KNGCIn94ejh1GYLH1Sj0L4o= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Wed, 29 Oct 2025 09:12:11 +0100 Subject: [PATCH v5 2/7] sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS() 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251029-sysfs-const-attr-prep-v5-2-ea7d745acff4@weissschuh.net> References: <20251029-sysfs-const-attr-prep-v5-0-ea7d745acff4@weissschuh.net> In-Reply-To: <20251029-sysfs-const-attr-prep-v5-0-ea7d745acff4@weissschuh.net> To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1761725539; l=1050; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=4HQ+oUujCPeT8uI7nX/NsoBt7w0I2vvre4qc0JB8GYk=; b=eSQrKMY1d0c+XRWXYiVrT1bZkLGuX2Snxb8zFwWvkHqlkpNRAB3tsO+GumJOhXlFxEsn1pOWV OL3nKv7VPR7CdPpWnvdT1r7tK44MkRp4DN5ooNAjvqF1yAbcsKlDza9 X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= To ease the constification process of 'struct attribute', transparently handle the const pointers in ATTRIBUTE_GROUPS(). A cast is used instead of assigning to .attrs_new as it keeps the macro smaller. As both members are aliased to each other the result is identical. Signed-off-by: Thomas Wei=C3=9Fschuh --- include/linux/sysfs.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index e34d6af96abb..92f82cee5f11 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -287,7 +287,12 @@ static const struct attribute_group *_name##_groups[] = =3D { \ =20 #define ATTRIBUTE_GROUPS(_name) \ static const struct attribute_group _name##_group =3D { \ - .attrs =3D _name##_attrs, \ + .attrs =3D _Generic(_name##_attrs, \ + struct attribute **: \ + _name##_attrs, \ + const struct attribute *const *: \ + (void *)_name##_attrs \ + ), \ }; \ __ATTRIBUTE_GROUPS(_name) =20 --=20 2.51.1.dirty