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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r0luW-004M5p-0Q; Wed, 08 Nov 2023 17:00:12 +0000 Received: from madras.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e5ab]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r0luS-004M53-2J; Wed, 08 Nov 2023 17:00:10 +0000 Received: from [100.116.125.19] (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: andrzej.p) by madras.collabora.co.uk (Postfix) with ESMTPSA id 47EA6660746B; Wed, 8 Nov 2023 17:00:06 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1699462807; bh=v1ZDZ92VUQvwcoBTo3YLDcAwJdq/9mIJJULop13aVjc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=DPxbTyaMPU2PQPpXxDwVbUyxVY/ySm7+tshhCBnMxktHXu5Kh0l9Afdgu0EnxdUWH floksg8TAOJSiHZxMPD3IYNNlfIhDPj+4lRd+l4r+20sstKqxMtm3uaxuEUpH4HV8H bj2caCJtxaR2A4JrNmbREt4LXd1zWiGhZXCmehnFWJbX4ZbbhHcdDNwREOs6B+53J2 8A9E0grogHDLtSbXuAUXzTS13taqL3kN8EyD44HLM5mYgfN6dF4940IlqqKM5oUBox TtXAkleyJc8CCq31npcCizjNq+A0hjdLzCUGVCdmIX2A48L+pzoQVP8s4mHkzKVHds c7OVd7EwTfbkg== Message-ID: <900d7ba8-6b0c-412a-936c-184decba7566@collabora.com> Date: Wed, 8 Nov 2023 18:00:03 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array Content-Language: en-US To: Benjamin Gaignard , mchehab@kernel.org, tfiga@chromium.org, m.szyprowski@samsung.com, ming.qian@nxp.com, ezequiel@vanguardiasur.com.ar, p.zabel@pengutronix.de, gregkh@linuxfoundation.org, hverkuil-cisco@xs4all.nl, nicolas.dufresne@collabora.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-staging@lists.linux.dev, kernel@collabora.com, Bin Liu , Matthias Brugger References: <20231031163104.112469-1-benjamin.gaignard@collabora.com> <20231031163104.112469-12-benjamin.gaignard@collabora.com> From: Andrzej Pietrasiewicz In-Reply-To: <20231031163104.112469-12-benjamin.gaignard@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231108_090008_891390_22058255 X-CRM114-Status: GOOD ( 15.23 ) 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 W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze: > Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array. > This allows us to change the type of the bufs in the future. > After each call to vb2_get_buffer() we need to be sure that we get > a valid pointer so check the return value of all of them. > > Signed-off-by: Benjamin Gaignard Reviewed-by: Andrzej Pietrasiewicz > CC: Bin Liu > CC: Matthias Brugger > --- > drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c > index 7194f88edc0f..73a063b1569b 100644 > --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c > +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c > @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) > goto end; > > vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type); > - if (buf->index >= vq->num_buffers) { > - dev_err(ctx->jpeg->dev, "buffer index out of range\n"); > + vb = vb2_get_buffer(vq, buf->index); > + if (!vb) { > + dev_err(ctx->jpeg->dev, "buffer not found\n"); > return -EINVAL; > } > - > - vb = vq->bufs[buf->index]; > jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb); > jpeg_src_buf->bs_size = buf->m.planes[0].bytesused; >