E2BIG is meant to be returned by S_EDID if userspace provided more data than
the hardware can handle. If userspace requested too much data with G_EDID, we
should silently correct the number of EDID blocks downwards.
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
drivers/media/i2c/tc358743.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c
index 02b131b..7d70acc 100644
--- a/drivers/media/i2c/tc358743.c
+++ b/drivers/media/i2c/tc358743.c
@@ -1560,10 +1560,11 @@ static int tc358743_g_edid(struct v4l2_subdev *sd,
if (edid->blocks == 0)
return -EINVAL;
- if (edid->start_block + edid->blocks > 8) {
- edid->blocks = 8;
- return -E2BIG;
- }
+ if (edid->start_block >= 8)
+ return -EINVAL;
+
+ if (edid->start_block + edid->blocks > 8)
+ edid->blocks = 8 - edid->start_block;
if (!edid->edid)
return -EINVAL;
--
2.1.4
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