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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 81748C43603 for ; Mon, 16 Dec 2019 18:01:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4BE0921582 for ; Mon, 16 Dec 2019 18:01:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519270; bh=i5XtLVMmI+2dJcN0KwB7A+BvEXbQvtvFuu2za7XVIY0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=z1hPjoKR/LA22NLPvvj/pjxMrlBB2n8Ch+WFtEqParaD+gefR8RWqK4oTqU+0Id3L wNHw0AKBd5X9sVighU/t6lknhtsp5NPFTcTehJsbGq7KYaJZwMMWCh+ngwxiX17smX 8+UDg3vn3wXQsSBqArrwTwSP70tlhg+LaqENNSVU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729103AbfLPSBJ (ORCPT ); Mon, 16 Dec 2019 13:01:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:35732 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729090AbfLPSBF (ORCPT ); Mon, 16 Dec 2019 13:01:05 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D9622206B7; Mon, 16 Dec 2019 18:01:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576519265; bh=i5XtLVMmI+2dJcN0KwB7A+BvEXbQvtvFuu2za7XVIY0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jzXn33OydXPL9nArm/C2siV3VEDZ4Dm7gp0BGBYanXTorMm9OoY6ogHrQ8rTu8ZHj hs8jJzcdmSlplLE5X1P/qBaORAYzPrLFzgjlRA+dKqVazV3cZH5LfIE0hsLxoLHDoB oFgCi64K7Fy4GiVYylrYi+fCVoJ4hCZZlXCsNfFw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bjorn Andersson , Will Deacon Subject: [PATCH 4.14 262/267] firmware: qcom: scm: Ensure a0 status code is treated as signed Date: Mon, 16 Dec 2019 18:49:48 +0100 Message-Id: <20191216174917.142951136@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191216174848.701533383@linuxfoundation.org> References: <20191216174848.701533383@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Will Deacon commit ff34f3cce278a0982a7b66b1afaed6295141b1fc upstream. The 'a0' member of 'struct arm_smccc_res' is declared as 'unsigned long', however the Qualcomm SCM firmware interface driver expects to receive negative error codes via this field, so ensure that it's cast to 'long' before comparing to see if it is less than 0. Cc: Reviewed-by: Bjorn Andersson Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- drivers/firmware/qcom_scm-64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/firmware/qcom_scm-64.c +++ b/drivers/firmware/qcom_scm-64.c @@ -158,7 +158,7 @@ static int qcom_scm_call(struct device * kfree(args_virt); } - if (res->a0 < 0) + if ((long)res->a0 < 0) return qcom_scm_remap_error(res->a0); return 0;