linux-kernel - [PATCH v4 4/5] media: platform: Fix v4l2-compliance test bug

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Date:   Thu, 17 Oct 2019 16:40:36 +0800
From:   Xia Jiang <xia.jiang@...iatek.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rick Chang <rick.chang@...iatek.com>
CC:     <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Tomasz Figa <tfiga@...omium.org>,
        <srv_heupstream@...iatek.com>, Xia Jiang <xia.jiang@...iatek.com>
Subject: [PATCH v4 4/5] media: platform: Fix v4l2-compliance test bug

Improve subscribe event handling: let v4l2_ctrl_subscribe_event() do the
job for other types except V4L2_EVENT_SOURCE_CHANGE.
Add checking created buffer size follow in mtk_jpeg_queue_setup().

Signed-off-by: Xia Jiang <xia.jiang@...iatek.com>
---
v4: new add patch for v4l2-compliance test bug fix
---
 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 5f0990fce8ef..abc506a552c1 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -446,9 +446,9 @@ static int mtk_jpeg_subscribe_event(struct v4l2_fh *fh,
 	switch (sub->type) {
 	case V4L2_EVENT_SOURCE_CHANGE:
 		return v4l2_src_change_event_subscribe(fh, sub);
-	default:
-		return -EINVAL;
 	}
+
+	return v4l2_ctrl_subscribe_event(fh, sub);
 }
 
 static int mtk_jpeg_g_selection(struct file *file, void *priv,
@@ -571,6 +571,13 @@ static int mtk_jpeg_queue_setup(struct vb2_queue *q,
 	if (!q_data)
 		return -EINVAL;
 
+	if (*num_planes) {
+		for (i = 0; i < *num_planes; i++)
+			if (sizes[i] < q_data->sizeimage[i])
+				return -EINVAL;
+		return 0;
+	}
+
 	*num_planes = q_data->fmt->colplanes;
 	for (i = 0; i < q_data->fmt->colplanes; i++) {
 		sizes[i] = q_data->sizeimage[i];
-- 
2.18.0