[Android Q&A, Help & Troubleshooting] Cozzmy13:
Trying to build a kernel from source for ZTE Vec 4G(msm8226 with 4G), but I'm getting an error I don't know how to fix.

I've already fixed some, as I have quiet a bit of C/C++ knowledge, but not this one:

CC drivers/media/platform/msm/vidc/msm_venc.o
drivers/media/platform/msm/vidc/msm_venc.c: In function 'try_set_ctrl':
drivers/media/platform/msm/vidc/msm_venc.c:1331: error: unknown field 'val' specified in initializer
drivers/media/platform/msm/vidc/msm_venc.c:1405: error: unknown field 'val' specified in initializer

Case that contains the first error line:

case V4L2_CID_MPEG_VIDC_VIDEO_NUM_P_FRAMES:
{
int num_p, num_b;
[COLOR="Red"]struct v4l2_ctrl update_ctrl = {.id = 0, .val = 0};[/COLOR]

if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_I_PERIOD &&
inst->fmts[CAPTURE_PORT]->fourcc != V4L2_PIX_FMT_H264 &&
inst->fmts[CAPTURE_PORT]->fourcc !=
V4L2_PIX_FMT_H264_NO_SC) {
dprintk(VIDC_ERR, "Control 0x%x only valid for H264",
ctrl->id);
rc = -ENOTSUPP;
break;
}

temp_ctrl = TRY_GET_CTRL(V4L2_CID_MPEG_VIDC_VIDEO_NUM_B_FRAMES);
num_b = temp_ctrl->val;

temp_ctrl = TRY_GET_CTRL(V4L2_CID_MPEG_VIDC_VIDEO_NUM_P_FRAMES);
num_p = temp_ctrl->val;

/* V4L2_CID_MPEG_VIDEO_H264_I_PERIOD and _NUM_P_FRAMES are
* implicitly tied to each other. If either is adjusted,
* the other needs to be adjusted in a complementary manner.
* Ideally we adjust _NUM_B_FRAMES as well but we'll leave it
* alone for now */
if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_I_PERIOD) {
num_p = ctrl->val - 1 - num_b;
update_ctrl.id = V4L2_CID_MPEG_VIDC_VIDEO_NUM_P_FRAMES;
update_ctrl.val = num_p;
} else if (ctrl->id == V4L2_CID_MPEG_VIDC_VIDEO_NUM_P_FRAMES) {
num_p = ctrl->val;
update_ctrl.id = V4L2_CID_MPEG_VIDEO_H264_I_PERIOD;
update_ctrl.val = num_p + num_b;
} else if (ctrl->id == V4L2_CID_MPEG_VIDC_VIDEO_NUM_B_FRAMES) {
num_b = ctrl->val;
update_ctrl.id = V4L2_CID_MPEG_VIDEO_H264_I_PERIOD;
update_ctrl.val = num_p + num_b;
}

if (update_ctrl.id) {
temp_ctrl = TRY_GET_CTRL(update_ctrl.id);
temp_ctrl->val = update_ctrl.val;
}

if (num_b) {
u32 max_num_b_frames = MAX_NUM_B_FRAMES;
property_id = HAL_PARAM_VENC_MAX_NUM_B_FRAMES;
pdata = &max_num_b_frames;
rc = call_hfi_op(hdev, session_set_property,
(void *)inst->session, property_id, pdata);
if (rc) {
dprintk(VIDC_ERR,
"Failed : Setprop MAX_NUM_B_FRAMES %d",
rc);
break;
}
}

property_id = HAL_CONFIG_VENC_INTRA_PERIOD;
intra_period.pframes = num_p;
intra_period.bframes = num_b;
pdata = &intra_period;

break;
}

case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
{
int final_mode = 0;
[COLOR="Red"]struct v4l2_ctrl update_ctrl = {.id = 0, .val = 0};[/COLOR]

/* V4L2_CID_MPEG_VIDEO_BITRATE_MODE and _RATE_CONTROL
* manipulate the same thing. If one control's state
* changes, try to mirror the state in the other control's
* value */
if (ctrl->id == V4L2_CID_MPEG_VIDEO_BITRATE_MODE) {
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
final_mode = HAL_RATE_CONTROL_VBR_CFR;
update_ctrl.val =
V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_VBR_CFR;
} else {/* ...if (ctrl->val == _BITRATE_MODE_CBR) */
final_mode = HAL_RATE_CONTROL_CBR_CFR;
update_ctrl.val =
V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_CBR_CFR;
}

update_ctrl.id = V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL;

} else if (ctrl->id == V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL) {
switch (ctrl->val) {
case V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_OFF:
case V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_VBR_VFR:
case V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_VBR_CFR:
update_ctrl.val =
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
case V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_CBR_VFR:
case V4L2_CID_MPEG_VIDC_VIDEO_RATE_CONTROL_CBR_CFR:
update_ctrl.val =
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR;
}

final_mode = ctrl->val;
update_ctrl.id = V4L2_CID_MPEG_VIDEO_BITRATE_MODE;
}

if (update_ctrl.id) {
temp_ctrl = TRY_GET_CTRL(update_ctrl.id);
temp_ctrl->val = update_ctrl.val;
}

property_id = HAL_PARAM_VENC_RATE_CONTROL;
property_val = final_mode;
pdata = &property_val;

break;
}

Function calls:

for (c = 0; c < ctrl->ncontrols; ++c) {
if (ctrl->cluster[c]->is_new) {
struct v4l2_ctrl *temp = ctrl->cluster[c];

[COLOR="Red"]rc = try_set_ctrl(inst, temp);[/COLOR]
if (rc) {
dprintk(VIDC_ERR, "Failed setting %s (%x)",
v4l2_ctrl_get_name(temp->id),
temp->id);
break;
}
}
}

Whole file attached.

From the error, I can tell that .val isn't declared, or something similar, but I need help from an expert to fix it.