From patchwork Sat Jun 29 09:19:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 13716868 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D85D2C3065A for ; Sat, 29 Jun 2024 09:19:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=wyjA2BhEiXaiYu36IgBQtDPeZotGjNfhM/eFXVY5sOg=; b=sigbLm98hS57wXjkMUx0AIb6xa lJOzJx018mB1ZYyFCzVBY81+Ne0KBRS3l90XXwx8MFANew9sTfhepYZ67u5Qn8K2WNRn8edQaujW0 gAIoJVQXOH2ZwPagsqGyxhyecUSXoL3l+IjoFZTO2+rW5WmKl0Qt0or/F/Uq8ot1tTMVIhQPEo6/y UX9yJ8Fd0mwFZl6CfdEC9OSfeoqlM7nRyIWm4w3UCrIgtGVxQ1VOTRRez0aloBJ3OJso29yHtVzr3 ojgIpXWk/UpD2QpYbkNQ7ivwDqgYNRDsUuLsVlwkT5DWRzxmMlinvcDpJV3bKi+i1Da11rgpkCJa4 CaijoO8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNUFR-0000000GApz-0v3v; Sat, 29 Jun 2024 09:19:57 +0000 Received: from smtp-65.smtpout.orange.fr ([80.12.242.65] helo=msa.smtpout.orange.fr) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNUFE-0000000GAl3-0zPJ for linux-mediatek@lists.infradead.org; Sat, 29 Jun 2024 09:19:48 +0000 Received: from fedora.home ([86.243.222.230]) by smtp.orange.fr with ESMTPA id NUF6sgiHDa7etNUFCs5cnD; Sat, 29 Jun 2024 11:19:42 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wanadoo.fr; s=t20230301; t=1719652782; bh=wyjA2BhEiXaiYu36IgBQtDPeZotGjNfhM/eFXVY5sOg=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=N18GjfXyCMCL0Bfw0rX/L1yZjQLg+P+cbpJLsU0XO16j1gxXLhpcjJNjlggMXf4l3 Li/cp9PZBJgcuBcMsQrkdQ/hD8O3Lu1CAsj+Kgca5LOppYwNLBCZOuB0S3fhslsGmk uIoiLCOl4UyP9mZEdED4duW5Ysc2JxaeD/lozPQQeNtP+QDxMewVpqaUUOXIC+Jt6p t1xhs1NQ9hbf1YCx+28EbMroVUzK3UbiKywKVaAyGfWW1XNQyRQ1CR8FNj8KBh72CE kE9NuwuDBMqbtARqPPRuoXFAaa89vYhN2DWPtlgTNgUFK4JYjDSfYPwrQAzZRkJ35m 18xZYF9C0NHFg== X-ME-Helo: fedora.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 29 Jun 2024 11:19:42 +0200 X-ME-IP: 86.243.222.230 From: Christophe JAILLET To: matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, fparent@baylibre.com, fchiby@baylibre.com, s.hauer@pengutronix.de Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH 2/4] soc: mediatek: pwrap: Constify some struct int[] Date: Sat, 29 Jun 2024 11:19:31 +0200 Message-ID: <626783bb264a8b3b0c8cd7e1d9f9b241f0a494b6.1719652155.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240629_021944_642194_A37E6816 X-CRM114-Status: UNSURE ( 9.35 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org These arrays are not modified in this driver. Constifying this structure moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 45528 8532 16 54076 d33c drivers/soc/mediatek/mtk-pmic-wrap.o After: ===== text data bss dec hex filename 52664 1384 16 54064 d330 drivers/soc/mediatek/mtk-pmic-wrap.o Signed-off-by: Christophe JAILLET Reviewed-by: AngeloGioacchino Del Regno --- Compile tested-only --- drivers/soc/mediatek/mtk-pmic-wrap.c | 30 ++++++++++++++-------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c index 0da0cdec5050..d57553486383 100644 --- a/drivers/soc/mediatek/mtk-pmic-wrap.c +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c @@ -483,7 +483,7 @@ enum pwrap_regs { PWRAP_MSB_FIRST, }; -static int mt2701_regs[] = { +static const int mt2701_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -569,7 +569,7 @@ static int mt2701_regs[] = { [PWRAP_ADC_RDATA_ADDR2] = 0x154, }; -static int mt6765_regs[] = { +static const int mt6765_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -601,7 +601,7 @@ static int mt6765_regs[] = { [PWRAP_DCM_DBC_PRD] = 0x1E0, }; -static int mt6779_regs[] = { +static const int mt6779_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -640,7 +640,7 @@ static int mt6779_regs[] = { [PWRAP_WACS2_VLDCLR] = 0xC28, }; -static int mt6795_regs[] = { +static const int mt6795_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -725,7 +725,7 @@ static int mt6795_regs[] = { [PWRAP_EXT_CK] = 0x14c, }; -static int mt6797_regs[] = { +static const int mt6797_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -758,7 +758,7 @@ static int mt6797_regs[] = { [PWRAP_DCM_DBC_PRD] = 0x1D4, }; -static int mt6873_regs[] = { +static const int mt6873_regs[] = { [PWRAP_INIT_DONE2] = 0x0, [PWRAP_TIMER_EN] = 0x3E0, [PWRAP_INT_EN] = 0x448, @@ -769,7 +769,7 @@ static int mt6873_regs[] = { [PWRAP_WACS2_RDATA] = 0xCA8, }; -static int mt7622_regs[] = { +static const int mt7622_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -881,7 +881,7 @@ static int mt7622_regs[] = { [PWRAP_SPI2_CTRL] = 0x244, }; -static int mt8135_regs[] = { +static const int mt8135_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -954,7 +954,7 @@ static int mt8135_regs[] = { [PWRAP_DCM_DBC_PRD] = 0x160, }; -static int mt8173_regs[] = { +static const int mt8173_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -1036,7 +1036,7 @@ static int mt8173_regs[] = { [PWRAP_DCM_DBC_PRD] = 0x148, }; -static int mt8183_regs[] = { +static const int mt8183_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -1087,7 +1087,7 @@ static int mt8183_regs[] = { [PWRAP_WACS2_VLDCLR] = 0xC28, }; -static int mt8195_regs[] = { +static const int mt8195_regs[] = { [PWRAP_INIT_DONE2] = 0x0, [PWRAP_STAUPD_CTRL] = 0x4C, [PWRAP_TIMER_EN] = 0x3E4, @@ -1104,7 +1104,7 @@ static int mt8195_regs[] = { [PWRAP_WACS2_RDATA] = 0x8A8, }; -static int mt8365_regs[] = { +static const int mt8365_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -1166,7 +1166,7 @@ static int mt8365_regs[] = { [PWRAP_WDT_SRC_EN_1] = 0xf8, }; -static int mt8516_regs[] = { +static const int mt8516_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -1251,7 +1251,7 @@ static int mt8516_regs[] = { [PWRAP_MSB_FIRST] = 0x170, }; -static int mt8186_regs[] = { +static const int mt8186_regs[] = { [PWRAP_MUX_SEL] = 0x0, [PWRAP_WRAP_EN] = 0x4, [PWRAP_DIO_EN] = 0x8, @@ -1377,7 +1377,7 @@ struct pmic_wrapper { }; struct pmic_wrapper_type { - int *regs; + const int *regs; enum pwrap_type type; u32 arb_en_all; u32 int_en_all;