From patchwork Tue Jan 2 13:28:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 10140597 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7BD716034B for ; Tue, 2 Jan 2018 13:59:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7CF2828B5C for ; Tue, 2 Jan 2018 13:59:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 71D5528B7B; Tue, 2 Jan 2018 13:59:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0410928B5C for ; Tue, 2 Jan 2018 13:59:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752031AbeABN7e (ORCPT ); Tue, 2 Jan 2018 08:59:34 -0500 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:10905 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752215AbeABN4x (ORCPT ); Tue, 2 Jan 2018 08:56:53 -0500 X-IronPort-AV: E=Sophos;i="5.45,497,1508796000"; d="scan'208";a="307399609" Received: from palace.lip6.fr (HELO localhost.localdomain) ([132.227.105.202]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/AES128-SHA256; 02 Jan 2018 14:56:46 +0100 From: Julia Lawall To: Sebastian Reichel Cc: kernel-janitors@vger.kernel.org, Chen-Yu Tsai , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 06/12] power: supply: account for const type of of_device_id.data Date: Tue, 2 Jan 2018 14:28:02 +0100 Message-Id: <1514899688-27844-7-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1514899688-27844-1-git-send-email-Julia.Lawall@lip6.fr> References: <1514899688-27844-1-git-send-email-Julia.Lawall@lip6.fr> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This driver creates two const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall --- drivers/power/supply/axp20x_ac_power.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff -u -p a/drivers/power/supply/axp20x_ac_power.c b/drivers/power/supply/axp20x_ac_power.c --- a/drivers/power/supply/axp20x_ac_power.c +++ b/drivers/power/supply/axp20x_ac_power.c @@ -159,7 +159,7 @@ static int axp20x_ac_power_probe(struct struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); struct power_supply_config psy_cfg = {}; struct axp20x_ac_power *power; - struct axp_data *axp_data; + const struct axp_data *axp_data; static const char * const irq_names[] = { "ACIN_PLUGIN", "ACIN_REMOVAL", NULL }; int i, irq, ret; @@ -176,7 +176,7 @@ static int axp20x_ac_power_probe(struct if (!power) return -ENOMEM; - axp_data = (struct axp_data *)of_device_get_match_data(&pdev->dev); + axp_data = of_device_get_match_data(&pdev->dev); if (axp_data->acin_adc) { power->acin_v = devm_iio_channel_get(&pdev->dev, "acin_v"); @@ -230,10 +230,10 @@ static int axp20x_ac_power_probe(struct static const struct of_device_id axp20x_ac_power_match[] = { { .compatible = "x-powers,axp202-ac-power-supply", - .data = (void *)&axp20x_data, + .data = &axp20x_data, }, { .compatible = "x-powers,axp221-ac-power-supply", - .data = (void *)&axp22x_data, + .data = &axp22x_data, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);