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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2018-06-29 06:12:43 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-07-04 08:33:32 -0400 |
| commit | 0245abf8206fb573a3977558de2b7b2be6f3d9f8 (patch) | |
| tree | 3a56b7c6a6c1e5c4b87057fbadedde034ade631a | |
| parent | 662a99e145661c2b35155cf375044deae9b79896 (diff) | |
| download | linux-stable-0245abf8206fb573a3977558de2b7b2be6f3d9f8.tar.gz linux-stable-0245abf8206fb573a3977558de2b7b2be6f3d9f8.tar.bz2 linux-stable-0245abf8206fb573a3977558de2b7b2be6f3d9f8.zip | |
media: v4l2-ctrls.c: fix broken auto cluster handling
When you switch from auto to manual mode for an auto-cluster (e.g.
autogain+gain controls), then the current HW value has to be copied
to the current control value. However, has_changed was never set to
true, so new_to_cur didn't actually copy this value.
Reported-by: Hugues FRUCHET <hugues.fruchet@st.com>
Tested-by: Hugues FRUCHET <hugues.fruchet@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index d29e45516eb7..d1087573da34 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -3137,9 +3137,22 @@ static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master, /* If OK, then make the new values permanent. */ update_flag = is_cur_manual(master) != is_new_manual(master); - for (i = 0; i < master->ncontrols; i++) + + for (i = 0; i < master->ncontrols; i++) { + /* + * If we switch from auto to manual mode, and this cluster + * contains volatile controls, then all non-master controls + * have to be marked as changed. The 'new' value contains + * the volatile value (obtained by update_from_auto_cluster), + * which now has to become the current value. + */ + if (i && update_flag && is_new_manual(master) && + master->has_volatiles && master->cluster[i]) + master->cluster[i]->has_changed = true; + new_to_cur(fh, master->cluster[i], ch_flags | ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0)); + } return 0; } |