diff options
| author | Andrey Konovalov <andrey.konovalov@linaro.org> | 2021-02-18 18:16:40 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-03-11 11:59:43 +0100 |
| commit | 67012d97df931b1be24efa0cac06f20d5be062eb (patch) | |
| tree | 35de418a6f06b90d4117424d7ee5f0588cf44400 /drivers/media/v4l2-core/v4l2-common.c | |
| parent | 937da4fd2ca125a6024ef86816e07590d657ed90 (diff) | |
media: v4l: common: v4l2_get_link_freq: add printing a warning
Print a warning if V4L2_CID_LINK_FREQ control is not implemented.
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-common.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 133d20e40f82..04af03285a20 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -469,6 +469,11 @@ s64 v4l2_get_link_freq(struct v4l2_ctrl_handler *handler, unsigned int mul, return -ENOENT; freq = div_u64(v4l2_ctrl_g_ctrl_int64(ctrl) * mul, div); + + pr_warn("%s: Link frequency estimated using pixel rate: result might be inaccurate\n", + __func__); + pr_warn("%s: Consider implementing support for V4L2_CID_LINK_FREQ in the transmitter driver\n", + __func__); } return freq > 0 ? freq : -EINVAL; |