From patchwork Thu Feb 29 09:56:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13576924 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 50F9EC54798 for ; Thu, 29 Feb 2024 09:56:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8XfHZ1vwzy1O6EfOoASGCZ8t3MPyFQYs5mBi3bMGphc=; b=Xuz/lfx8dhfeuq lZf/3fwSM24H9Bq4G6Qe9P1FfBHLO9tzubR3OtndHRNhdttHUXnd14Ovit3VyyfLd49LIlSmOZwMS jY7mefiV7eUL3GAYAW10pijHFaBvnVSdv5mPO9VV0enjfylLvLkGRJz+M5i4QbrNq65oTZhwYOGxh U3o/vkScIAQEUMKJjPW5T5MPM87PhsNFrCyVQbw/b6k+xXfI2R+Wd+sVthib0p56DRrtWGu3+ux3c 0fTG2SR2+Ie210g23nbv/UUEi5/MGCeDbXToLt/7VM1x/QtGyq9ED5V2tmhd908aixz2eh6x/xnzS qR2HR14qSqsOQ0D+Coxg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfd9N-0000000D1cQ-1tM6; Thu, 29 Feb 2024 09:56:25 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rfd9K-0000000D1bq-2BiS; Thu, 29 Feb 2024 09:56:23 +0000 X-UUID: c79f7fd2d6e811eea40fa5ac21cdad35-20240229 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=NSJvBf2MtjtGhjMO2/ZFmTYLI8qmp/2QaCoKqPV6uw8=; b=Zo9dDuHuECaL8Yegn9VKliddA9lYXyjYw4S+a/rV3ckzUAV4SvfhSYi86uS42expLvTfUcmnAKO09xyx55VY+XEKS0qiorBh1JuNzatBh4Ulij4r3rQjJuMpfThI5ii35LgXhcgTa1MUJFUQSnKy5SAuBY/ZOLfLrGTqpVwhO9o=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.37,REQID:718f2ba0-c631-4978-a724-56a3c94e761a,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:6f543d0,CLOUDID:660858ff-c16b-4159-a099-3b9d0558e447,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: c79f7fd2d6e811eea40fa5ac21cdad35-20240229 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 723179251; Thu, 29 Feb 2024 02:56:16 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 29 Feb 2024 17:56:13 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 29 Feb 2024 17:56:13 +0800 From: Yunfei Dong To: =?utf-8?q?N=C3=ADcolas_F_=2E_R_=2E_A_=2E_Prado?= , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Nathan Hebert CC: Hsin-Yi Wang , Fritz Koenig , Daniel Vetter , Steve Cho , Yunfei Dong , , , , , , Subject: [PATCH 1/3] media: mediatek: vcodec: fix h264 multi statless decoder smatch warning Date: Thu, 29 Feb 2024 17:56:09 +0800 Message-ID: <20240229095611.6698-2-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240229095611.6698-1-yunfei.dong@mediatek.com> References: <20240229095611.6698-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240229_015622_594866_EB2331FD X-CRM114-Status: GOOD ( 10.87 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Fix smatch static checker warning for vdec_h264_req_multi_if.c. Leading to kernel crash when fb is NULL. Fixes: 397edc703a10 ("media: mediatek: vcodec: add h264 decoder") Signed-off-by: Yunfei Dong --- .../vcodec/decoder/vdec/vdec_h264_req_multi_if.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c index 0e741e0dc8ba..ab8e708e0df1 100644 --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_multi_if.c @@ -724,11 +724,16 @@ static int vdec_h264_slice_single_decode(void *h_vdec, struct mtk_vcodec_mem *bs return vpu_dec_reset(vpu); fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx); + if (!fb) { + mtk_vdec_err(inst->ctx, "fb buffer is NULL"); + return -EBUSY; + } + src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer); dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer); - y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0; - c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0; + y_fb_dma = (u64)fb->base_y.dma_addr; + c_fb_dma = (u64)fb->base_c.dma_addr; mtk_vdec_debug(inst->ctx, "[h264-dec] [%d] y_dma=%llx c_dma=%llx", inst->ctx->decoded_frame_cnt, y_fb_dma, c_fb_dma);