From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
To: Linux Media Mailing List <linux-media@vger.kernel.org>
Subject: [PATCH] adv7511-v4l2: correctly report EDIDs of 1 block
Date: Fri, 26 Mar 2021 10:03:32 +0100 [thread overview]
Message-ID: <9a769617-f555-f14f-1fea-71152b7c9e8f@xs4all.nl> (raw)
If the EDID has an odd number of blocks (usually just 1, but the
same problem occurs with 3 blocks), then VIDIOC_G_EDID reported 2
(or 4) blocks. Fix this.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
---
drivers/media/i2c/adv7511-v4l2.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/i2c/adv7511-v4l2.c b/drivers/media/i2c/adv7511-v4l2.c
index 9183003ae22d..992db5c79b13 100644
--- a/drivers/media/i2c/adv7511-v4l2.c
+++ b/drivers/media/i2c/adv7511-v4l2.c
@@ -1196,21 +1196,21 @@ static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
return -EINVAL;
if (edid->start_block == 0 && edid->blocks == 0) {
- edid->blocks = state->edid.segments * 2;
+ edid->blocks = state->edid.blocks;
return 0;
}
- if (state->edid.segments == 0)
+ if (state->edid.blocks == 0)
return -ENODATA;
- if (edid->start_block >= state->edid.segments * 2)
+ if (edid->start_block >= state->edid.blocks)
return -EINVAL;
- if (edid->start_block + edid->blocks > state->edid.segments * 2)
- edid->blocks = state->edid.segments * 2 - edid->start_block;
+ if (edid->start_block + edid->blocks > state->edid.blocks)
+ edid->blocks = state->edid.blocks - edid->start_block;
memcpy(edid->edid, &state->edid.data[edid->start_block * 128],
- 128 * edid->blocks);
+ 128 * edid->blocks);
return 0;
}
--
2.29.2
reply other threads:[~2021-03-26 9:05 UTC|newest]
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