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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A93FC433EF for ; Wed, 17 Nov 2021 13:27:17 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (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 02A0661547 for ; Wed, 17 Nov 2021 13:27:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 02A0661547 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=opensource.cirrus.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 602C718FA; Wed, 17 Nov 2021 14:26:25 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 602C718FA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1637155635; bh=PckBAme0KW0Bzs9qbnWfDF6iA8JdwMjFHp2tUjkc3bo=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=kB/jhHRlZeogi6VudAgKPfHS1gNQwz3z2mh1KlO4MKQv7Lun20QjlVmp+ToC/3AwV h5bSEJsRK8noSid1Rkn226M2OoOEc9SxuDltXxqbuLTXr8AeDjkhaKDcDcxfCVgiB6 R8YM9FYzpMWNm0s4OAJMy36E97esNLXSzza9GPlc= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 72D3CF80528; Wed, 17 Nov 2021 14:23:30 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 4D34AF8051B; Wed, 17 Nov 2021 14:23:28 +0100 (CET) Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 7C017F804D6 for ; Wed, 17 Nov 2021 14:23:08 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 7C017F804D6 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b="SfZFvF+q" Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 1AH4qhZe020405; Wed, 17 Nov 2021 07:23:05 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=PODMain02222019; bh=mzE3Dbaalakly94KMLknTeJN5a3hqsD9yPHl2nW6sMY=; b=SfZFvF+q7zEjHM+xi+NAu3Wl+lesupxTscEplxDqWxXMyCoABIRC0dvWP4miK6R9Hp+/ B0vc5AyLg+4yRWyhemztdRcpDdy4H81N819JUl6pnOmOoKZw/OkwaQoBj7stJVtH+xNQ IiTEJVyCzDSc2zB6bXteqzO5ueEKpqJOVGDC5iUH5IXN0k0TW7CL3wP0eaZ8hno4NwAO 3ZF4IZTIpb4ZlNeA0JwDSl16nvt2uIAqRod2Rg5vnZ2sokb5ypytcjGufK1FDGwt3YH/ 6TbYP2DAVORd5W2XHu7fX88JbgKpwWmmmTq89ZAuRJzbcri9cq3XS1s6TrOWE03GFHsE 6A== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0b-001ae601.pphosted.com (PPS) with ESMTPS id 3ccgtn14sf-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Wed, 17 Nov 2021 07:23:05 -0600 Received: from EDIEX01.ad.cirrus.com (198.61.84.80) by EDIEX02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Wed, 17 Nov 2021 13:23:00 +0000 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by EDIEX01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Wed, 17 Nov 2021 13:23:00 +0000 Received: from algalon.ad.cirrus.com (algalon.ad.cirrus.com [198.90.251.122]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id C931B11AF; Wed, 17 Nov 2021 13:23:00 +0000 (UTC) From: Charles Keepax To: Subject: [PATCH v2 07/10] firmware: cs_dsp: Perform NULL check in cs_dsp_coeff_write/read_ctrl Date: Wed, 17 Nov 2021 13:22:57 +0000 Message-ID: <20211117132300.1290-7-ckeepax@opensource.cirrus.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20211117132300.1290-1-ckeepax@opensource.cirrus.com> References: <20211117132300.1290-1-ckeepax@opensource.cirrus.com> MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-GUID: RvkFy2WnyDpT0CMCq9mtf_3n42KgGsnK X-Proofpoint-ORIG-GUID: RvkFy2WnyDpT0CMCq9mtf_3n42KgGsnK X-Proofpoint-Spam-Reason: safe Cc: patches@opensource.cirrus.com, alsa-devel@alsa-project.org, lgirdwood@gmail.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Add a NULL check to the cs_dsp_coeff_write/read_ctrl functions. This is a major convenience for users of the cs_dsp library as it allows the call to cs_dsp_get_ctl to be inlined with the call to read/write the control itself. Signed-off-by: Charles Keepax --- drivers/firmware/cirrus/cs_dsp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c index 62ba4ebbf11f5..9eecd16265375 100644 --- a/drivers/firmware/cirrus/cs_dsp.c +++ b/drivers/firmware/cirrus/cs_dsp.c @@ -758,6 +758,9 @@ int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, const void *buf, size_ lockdep_assert_held(&ctl->dsp->pwr_lock); + if (!ctl) + return -ENOENT; + if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) ret = -EPERM; else if (buf != ctl->cache) @@ -817,6 +820,9 @@ int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len) lockdep_assert_held(&ctl->dsp->pwr_lock); + if (!ctl) + return -ENOENT; + if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) { if (ctl->enabled && ctl->dsp->running) return cs_dsp_coeff_read_ctrl_raw(ctl, buf, len); -- 2.11.0