From patchwork Sun Sep 8 21:07:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 826510 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (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 1A52E181328; Sun, 8 Sep 2024 21:10:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.11.138.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725829802; cv=none; b=VnwR+ia6aJo6xPCDlWo/ERCCcSRkp7xNisbYY7BGIlc11WwTKklD+6ldJNwNn2L+2B5Bifg8QkI1ep1H0tDkdOeux5i+xmh2lbuAbyn+OdFCL8z95gb9GLMn7OCmxfStSlVqFL6zQuk0Wf4WO6MjzeAZgLwztpEynpCD0mRJPoE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725829802; c=relaxed/simple; bh=hr5V3SKs+5sSdOcCMLObBljUvchYcD8eBaaOFqtYTr4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e8Wh3ZAhqzbPYfvdy2nkDO0YLB+OwuA/VdbeOhosixPDHLZe3xgI8qql1S97NOfjwNzL6ayioBUvSobngQIVMRBpXSOUJobHJT/g3lVYi6R+hS5eKXITWv+atdp5OkDXNBh0N+g0/4MExVHsBpq0WZsLltRoBqJCPrr1touijSk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de; spf=pass smtp.mailfrom=sntech.de; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b=YBbXd5wG; arc=none smtp.client-ip=185.11.138.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sntech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b="YBbXd5wG" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=AODWEsE73iZy3ftOFUVpepawKaVLM9NWi8usTPEPRhw=; b=YBbXd5wGMQvFJ78L7z+1sRxDbj lj8ky7GrcW/R8EGhM6SOQe+1YOUnnfUSAemNtm4Hq1xsa15A816rSSH0kk/qWszTu5rJCXhwRSOkO NeHevL5NpBoay96RCGWudg1Z45AkXFxkZ+WZPRNH+IzXC3VqoHPB+3H1BCQN4n/2q2QyBCBZYKEGa gdLwY99LziS6ERU8zhOh7g4vDNAJTHDCZwgUuibqdeTh6iRxkm10SSJfK8j+ni7wiQLPVC82cg8C+ KIm2ieNa2Ju72daIBrPau+b7ZDvr8JaInc4p9gEzB0ZiSxJAyLKF9/iH1B5E6xJX8dam384YJTFn3 05713NZg==; Received: from i5e8616cc.versanet.de ([94.134.22.204] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1snPA1-0003s9-W8; Sun, 08 Sep 2024 23:09:30 +0200 From: Heiko Stuebner To: lee@kernel.org, jikos@kernel.org, jic23@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, jdelvare@suse.com, linux@roeck-us.net, srinivas.pandruvada@linux.intel.com, bentiss@kernel.org, dmitry.torokhov@gmail.com, pavel@ucw.cz, ukleinek@debian.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-input@vger.kernel.org, linux-iio@vger.kernel.org, linux-leds@vger.kernel.org, Heiko Stuebner Subject: [PATCH v8 2/9] mfd: core: make platform_data pointer const in struct mfd_cell Date: Sun, 8 Sep 2024 23:07:56 +0200 Message-ID: <20240908210803.3339919-3-heiko@sntech.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240908210803.3339919-1-heiko@sntech.de> References: <20240908210803.3339919-1-heiko@sntech.de> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The content of the platform_data of a struct mfd_cell is simply passed on to the platform_device_add_data() call in mfd_add_device() . platform_device_add_data() already handles the data behind that pointer as const and also uses kmemdup to create a copy of the data before handing that copy over to the newly created platform-device, so there is no reason to not extend this to struct mfd_cell, as the old copy in the mfd_cell will be stale anyway. This allows to pass structs gathered from of_device_get_match_data() as platform-data to sub-devices - which is retrieved as const already. Signed-off-by: Heiko Stuebner --- include/linux/mfd/core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index e8bcad641d8c..faeea7abd688 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -72,7 +72,7 @@ struct mfd_cell { int (*resume)(struct platform_device *dev); /* platform data passed to the sub devices drivers */ - void *platform_data; + const void *platform_data; size_t pdata_size; /* Matches ACPI */