diff options
| author | Mats Randgaard <matrandg@cisco.com> | 2013-08-14 12:23:48 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-08-24 07:24:58 (GMT) |
| commit | 7be4f888112eeebd7ce33bca49b3a1df1fd52295 (patch) | |
| tree | 7bf955334a58e0ab666dc2e9ddf825d7ea6201cd /drivers | |
| parent | 70028fe646e63dd01070d1aaf304bbbc80e4a90a (diff) | |
| download | linux-7be4f888112eeebd7ce33bca49b3a1df1fd52295.tar.xz | |
[media] ad9389b: no monitor if EDID is wrong
state->have_monitor is set to false if the EDID that is read from
the monitor has too many segments or wrong CRC.
Signed-off-by: Mats Randgaard <matrandg@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/i2c/ad9389b.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c index 7e68d8f..52384e8 100644 --- a/drivers/media/i2c/ad9389b.c +++ b/drivers/media/i2c/ad9389b.c @@ -1019,6 +1019,7 @@ static bool ad9389b_check_edid_status(struct v4l2_subdev *sd) segment = ad9389b_rd(sd, 0xc4); if (segment >= EDID_MAX_SEGM) { v4l2_err(sd, "edid segment number too big\n"); + state->have_monitor = false; return false; } v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment); @@ -1032,6 +1033,8 @@ static bool ad9389b_check_edid_status(struct v4l2_subdev *sd) } if (!edid_segment_verify_crc(sd, segment)) { /* edid crc error, force reread of edid segment */ + v4l2_err(sd, "%s: edid crc error\n", __func__); + state->have_monitor = false; ad9389b_s_power(sd, false); ad9389b_s_power(sd, true); return false; |