From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96943C433DF for ; Thu, 18 Jun 2020 01:57:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 46AB5221FC for ; Thu, 18 Jun 2020 01:57:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="kQQizlPZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="YC2O/gMe" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 46AB5221FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=o2SGFNX2dQeba4kp19siXtGdWPsjYslmUWffeSM0TqQ=; b=kQQizlPZUtyNob yQ6+hteJS4um0f1KgSxJ5fv02ogpIxB3fTLhdxBWJV/TNNyL9srZu1SM5PA97mJWR8TY5NUQGYqhW kqRlOLC4B4J84RQ4onDS4Y1+66D1yfUyN/hF55VVgnvYaOToWLITih+SFjyjhgP3FnUSZu6QFNIg8 lx4LMfjd/a5CE/H9WcQjK9HVX6Jif0nIVaHXJYk3CODaLE9oZoEMuc5nfAhUS+ZOMG7dSdlJl/iiT uHfAi26ibmniMSje6VxfzMM/aW4Vrsd1xs4NH94fWtfsOyxI+DQWVgr3lnNCnYM2TFrG/t8329L2h apUvnUziSdf0oXlhwt9A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jljnv-0002DM-Sm; Thu, 18 Jun 2020 01:57:23 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jljIW-00080t-Iz; Thu, 18 Jun 2020 01:25:00 +0000 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9D71121974; Thu, 18 Jun 2020 01:24:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443495; bh=05pmoUWdk4gxx0NrL0RsI5BRsRPG5iHnJzBpVnrU088=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YC2O/gMeSn0EOEIT1nszVZ2NnVzOGsRWc5AkgpvrV3hk+CA2cPuWt3EXOkU9U7tmP oVWdpimZu93btcan4Odopb/OcaRmgOGdAuWAeQfhA0hWaYuy83B0m5ofucpw5jqdOF 4IarTbeOAHz8O512Zps/FYzrqr/ecWjTVZ4BP0/0= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 122/172] clk: bcm2835: Fix return type of bcm2835_register_gate Date: Wed, 17 Jun 2020 21:21:28 -0400 Message-Id: <20200618012218.607130-122-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012218.607130-1-sashal@kernel.org> References: <20200618012218.607130-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200617_182456_716198_7C51F098 X-CRM114-Status: GOOD ( 12.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Stephen Boyd , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Nathan Chancellor , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Nathan Chancellor [ Upstream commit f376c43bec4f8ee8d1ba5c5c4cfbd6e84fb279cb ] bcm2835_register_gate is used as a callback for the clk_register member of bcm2835_clk_desc, which expects a struct clk_hw * return type but bcm2835_register_gate returns a struct clk *. This discrepancy is hidden by the fact that bcm2835_register_gate is cast to the typedef bcm2835_clk_register by the _REGISTER macro. This turns out to be a control flow integrity violation, which is how this was noticed. Change the return type of bcm2835_register_gate to be struct clk_hw * and use clk_hw_register_gate to do so. This should be a non-functional change as clk_register_gate calls clk_hw_register_gate anyways but this is needed to avoid issues with further changes. Fixes: b19f009d4510 ("clk: bcm2835: Migrate to clk_hw based registration and OF APIs") Link: https://github.com/ClangBuiltLinux/linux/issues/1028 Signed-off-by: Nathan Chancellor Link: https://lkml.kernel.org/r/20200516080806.1459784-1-natechancellor@gmail.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/bcm/clk-bcm2835.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index 7bef0666ae7e..1c093fb35ebe 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1447,13 +1447,13 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman, return &clock->hw; } -static struct clk *bcm2835_register_gate(struct bcm2835_cprman *cprman, +static struct clk_hw *bcm2835_register_gate(struct bcm2835_cprman *cprman, const struct bcm2835_gate_data *data) { - return clk_register_gate(cprman->dev, data->name, data->parent, - CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE, - cprman->regs + data->ctl_reg, - CM_GATE_BIT, 0, &cprman->regs_lock); + return clk_hw_register_gate(cprman->dev, data->name, data->parent, + CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE, + cprman->regs + data->ctl_reg, + CM_GATE_BIT, 0, &cprman->regs_lock); } typedef struct clk_hw *(*bcm2835_clk_register)(struct bcm2835_cprman *cprman, -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel