static int jpeg_m2m_open(struct file *file)
{
struct jpeg_dev *dev = video_drvdata(file);
struct jpeg_ctx *ctx = NULL;
int ret = 0;
enum jpeg_node_type node;
node = jpeg_get_node_type(file);
if (node == JPEG_NODE_INVALID) {
jpeg_err("cannot specify node type\n");
ret = -ENOENT;
goto err_node_type;
}
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
return -ENOMEM;
file->private_data = ctx;
ctx->dev = dev;
spin_lock_init(&ctx->slock);
if (node == JPEG_NODE_DECODER)
ctx->m2m_ctx =
v4l2_m2m_ctx_init(dev->m2m_dev_dec, ctx,
queue_init_dec);
else
ctx->m2m_ctx =
v4l2_m2m_ctx_init(dev->m2m_dev_enc, ctx,
queue_init_enc);
if (IS_ERR(ctx->m2m_ctx)) {
int err = PTR_ERR(ctx->m2m_ctx);
kfree(ctx);
return err;
}
clk_enable(dev->clk);
#ifdef CONFIG_PM_RUNTIME
#if defined (CONFIG_CPU_EXYNOS5250)
dev->vb2->resume(dev->alloc_ctx);
#ifdef CONFIG_BUSFREQ_OPP
/* lock bus frequency */
dev_lock(dev->bus_dev, &dev->plat_dev->dev, BUSFREQ_400MHZ);
#endif
#else
pm_runtime_get_sync(&dev->plat_dev->dev);
#endif
#endif
return 0;
err_node_type:
kfree(ctx);
return ret;
}
static int jpeg_m2m_open(struct file *file)
{
struct jpeg_dev *dev = video_drvdata(file);
struct jpeg_ctx *ctx = NULL;
int ret = 0;
enum jpeg_node_type node;
node = jpeg_get_node_type(file);
if (node == JPEG_NODE_INVALID) {
jpeg_err("cannot specify node type\n");
ret = -ENOENT;
goto err_node_type;
}
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
return -ENOMEM;
file->private_data = ctx;
ctx->dev = dev;
if (node == JPEG_NODE_DECODER)
ctx->m2m_ctx =
v4l2_m2m_ctx_init(dev->m2m_dev_dec, ctx,
queue_init_dec);
else
ctx->m2m_ctx =
v4l2_m2m_ctx_init(dev->m2m_dev_enc, ctx,
queue_init_enc);
if (IS_ERR(ctx->m2m_ctx)) {
int err = PTR_ERR(ctx->m2m_ctx);
kfree(ctx);
return err;
}
clk_enable(dev->clk);
#ifdef CONFIG_PM_RUNTIME
pm_runtime_get_sync(&dev->plat_dev->dev);
#endif
return 0;
err_node_type:
kfree(ctx);
return ret;
}
static int g2d_open(struct file *file)
{
struct g2d_dev *dev = video_drvdata(file);
struct g2d_ctx *ctx = NULL;
int ret = 0;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->dev = dev;
/* Set default formats */
ctx->in = def_frame;
ctx->out = def_frame;
ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
kfree(ctx);
return ret;
}
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
g2d_setup_ctrls(ctx);
/* Write the default values to the ctx struct */
v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
v4l2_info(&dev->v4l2_dev, "instance opened\n");
return 0;
}
static int rot_open(struct file *file)
{
struct rot_dev *rot = video_drvdata(file);
struct rot_ctx *ctx = NULL;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx) {
rot_err("no memory for open context\n");
return -ENOMEM;
}
atomic_inc(&rot->m2m.in_use);
file->private_data = ctx;
ctx->rot_dev = rot;
/* Default color format */
ctx->s_frame.rot_fmt = &rot_formats[0];
ctx->d_frame.rot_fmt = &rot_formats[0];
spin_lock_init(&ctx->slock);
/* Setup the device context for mem2mem mode. */
ctx->m2m_ctx = v4l2_m2m_ctx_init(rot->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
kfree(ctx);
atomic_dec(&rot->m2m.in_use);
return PTR_ERR(ctx->m2m_ctx);
}
return 0;
}
int register_nxp_video(struct nxp_video *me)
{
int ret;
me->vdev.v4l2_dev = me->v4l2_dev;
pr_debug("%s: entered\n", __func__);
ret = video_register_device(&me->vdev, VFL_TYPE_GRABBER, -1);
if (ret < 0) {
pr_err("%s: failed to video_register_device()\n", __func__);
return ret;
}
#if 0
if (me->m2m_dev) {
me->m2m_ctx = v4l2_m2m_ctx_init(me->m2m_dev, me, m2m_queue_init);
if (IS_ERR(me->m2m_ctx)) {
pr_err("%s: failed to v4l2_m2m_ctx_init()\n", __func__);
video_unregister_device(&me->vdev);
return -EINVAL;
}
}
#endif
pr_debug("%s: success!!!\n", __func__);
return 0;
}
/*
* v4l2_file_operations
*/
static int nxp_video_open(struct file *file)
{
struct nxp_video *me = video_drvdata(file);
u32 pad;
struct v4l2_subdev *sd;
int ret = 0;
pr_debug("%s entered : %s\n", __func__, me->name);
if (me->open_count == 0) {
memset(me->frame, 0, sizeof(struct nxp_video_frame)*2);
sd = _get_remote_subdev(me,
me->type == NXP_VIDEO_TYPE_OUT ?
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
&pad);
if (sd)
ret = v4l2_subdev_call(sd, core, s_power, 1);
if (me->m2m_dev) {
me->m2m_ctx = v4l2_m2m_ctx_init(me->m2m_dev, me, m2m_queue_init);
if (IS_ERR(me->m2m_ctx)) {
pr_err("%s: failed to v4l2_m2m_ctx_init()\n", __func__);
return -EINVAL;
}
}
}
me->open_count++;
file->private_data = me;
pr_debug("%s exit\n", __func__);
return ret;
}
static int gsc_m2m_open(struct file *file)
{
struct gsc_dev *gsc = video_drvdata(file);
struct gsc_ctx *ctx = NULL;
int ret;
gsc_dbg("pid: %d, state: 0x%lx", task_pid_nr(current), gsc->state);
if (gsc_out_opened(gsc) || gsc_cap_opened(gsc))
return -EBUSY;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx)
return -ENOMEM;
v4l2_fh_init(&ctx->fh, gsc->m2m.vfd);
ret = gsc_ctrls_create(ctx);
if (ret)
goto error_fh;
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->gsc_dev = gsc;
/* Default color format */
ctx->s_frame.fmt = get_format(0);
ctx->d_frame.fmt = get_format(0);
/* Setup the device context for mem2mem mode. */
ctx->state |= GSC_CTX_M2M;
ctx->flags = 0;
ctx->in_path = GSC_DMA;
ctx->out_path = GSC_DMA;
spin_lock_init(&ctx->slock);
INIT_LIST_HEAD(&ctx->fence_wait_list);
INIT_WORK(&ctx->fence_work, gsc_m2m_fence_work);
ctx->m2m_ctx = v4l2_m2m_ctx_init(gsc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
gsc_err("Failed to initialize m2m context");
ret = PTR_ERR(ctx->m2m_ctx);
goto error_fh;
}
if (gsc->m2m.refcnt++ == 0)
set_bit(ST_M2M_OPEN, &gsc->state);
gsc_dbg("gsc m2m driver is opened, ctx(0x%p)", ctx);
return 0;
error_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return ret;
}
static int rockchip_vpu_open(struct file *filp)
{
struct rockchip_vpu_dev *vpu = video_drvdata(filp);
struct video_device *vdev = video_devdata(filp);
struct rockchip_vpu_ctx *ctx;
int ret;
/*
* We do not need any extra locking here, because we operate only
* on local data here, except reading few fields from dev, which
* do not change through device's lifetime (which is guaranteed by
* reference on module from open()) and V4L2 internal objects (such
* as vdev and ctx->fh), which have proper locking done in respective
* helper functions used here.
*/
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->dev = vpu;
if (vdev == vpu->vfd_enc)
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(vpu->m2m_dev, ctx,
&enc_queue_init);
else
ctx->fh.m2m_ctx = ERR_PTR(-ENODEV);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
kfree(ctx);
return ret;
}
v4l2_fh_init(&ctx->fh, vdev);
filp->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
if (vdev == vpu->vfd_enc) {
rockchip_vpu_enc_reset_dst_fmt(vpu, ctx);
rockchip_vpu_enc_reset_src_fmt(vpu, ctx);
}
ret = rockchip_vpu_ctrls_setup(vpu, ctx);
if (ret) {
vpu_err("Failed to set up controls\n");
goto err_fh_free;
}
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
return 0;
err_fh_free:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return ret;
}
static int s5p_jpeg_open(struct file *file)
{
struct s5p_jpeg *jpeg = video_drvdata(file);
struct video_device *vfd = video_devdata(file);
struct s5p_jpeg_ctx *ctx;
struct s5p_jpeg_fmt *out_fmt;
int ret = 0;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
if (mutex_lock_interruptible(&jpeg->lock)) {
ret = -ERESTARTSYS;
goto free;
}
v4l2_fh_init(&ctx->fh, vfd);
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->jpeg = jpeg;
if (vfd == jpeg->vfd_encoder) {
ctx->mode = S5P_JPEG_ENCODE;
out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_RGB565);
} else {
ctx->mode = S5P_JPEG_DECODE;
out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_JPEG);
}
ret = s5p_jpeg_controls_create(ctx);
if (ret < 0)
goto error;
ctx->m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
goto error;
}
ctx->out_q.fmt = out_fmt;
ctx->cap_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_YUYV);
mutex_unlock(&jpeg->lock);
return 0;
error:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
mutex_unlock(&jpeg->lock);
free:
kfree(ctx);
return ret;
}
/*
* msm_jpegdma_open - Fd device open method.
* @file: Pointer to file struct.
*/
static int msm_jpegdma_open(struct file *file)
{
struct msm_jpegdma_device *device = video_drvdata(file);
struct video_device *video = video_devdata(file);
struct jpegdma_ctx *ctx;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mutex_init(&ctx->lock);
ctx->jdma_device = device;
dev_dbg(ctx->jdma_device->dev, "Jpeg v4l2 dma open\n");
/* Set ctx defaults */
ctx->timeperframe.numerator = 1;
ctx->timeperframe.denominator = MSM_JPEGDMA_DEFAULT_FPS;
atomic_set(&ctx->active, 0);
v4l2_fh_init(&ctx->fh, video);
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->m2m_ctx = v4l2_m2m_ctx_init(device->m2m_dev,
ctx, msm_jpegdma_queue_init);
if (IS_ERR_OR_NULL(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
goto error_m2m_init;
}
init_completion(&ctx->completion);
complete_all(&ctx->completion);
dev_dbg(ctx->jdma_device->dev, "Jpeg v4l2 dma open success\n");
ret = cam_config_ahb_clk(CAM_AHB_CLIENT_JPEG, CAMERA_AHB_SVS_VOTE);
if (ret < 0) {
pr_err("%s: failed to vote for AHB\n", __func__);
goto error_m2m_init;
}
return 0;
error_m2m_init:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
return ret;
}
static int gsc_m2m_open(struct file *file)
{
struct gsc_dev *gsc = video_drvdata(file);
struct gsc_ctx *ctx = NULL;
int ret;
pr_debug("pid: %d, state: 0x%lx", task_pid_nr(current), gsc->state);
if (mutex_lock_interruptible(&gsc->lock))
return -ERESTARTSYS;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto unlock;
}
v4l2_fh_init(&ctx->fh, gsc->m2m.vfd);
ret = gsc_ctrls_create(ctx);
if (ret)
goto error_fh;
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->gsc_dev = gsc;
/* Default color format */
ctx->s_frame.fmt = get_format(0);
ctx->d_frame.fmt = get_format(0);
/* Setup the device context for mem2mem mode. */
ctx->state = GSC_CTX_M2M;
ctx->flags = 0;
ctx->in_path = GSC_DMA;
ctx->out_path = GSC_DMA;
ctx->m2m_ctx = v4l2_m2m_ctx_init(gsc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
pr_err("Failed to initialize m2m context");
ret = PTR_ERR(ctx->m2m_ctx);
goto error_ctrls;
}
if (gsc->m2m.refcnt++ == 0)
set_bit(ST_M2M_OPEN, &gsc->state);
pr_debug("gsc m2m driver is opened, ctx(0x%p)", ctx);
mutex_unlock(&gsc->lock);
return 0;
error_ctrls:
gsc_ctrls_delete(ctx);
v4l2_fh_del(&ctx->fh);
error_fh:
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
unlock:
mutex_unlock(&gsc->lock);
return ret;
}
static int fimc_m2m_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
struct fimc_ctx *ctx;
int ret = -EBUSY;
pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
/*
* Don't allow simultaneous open() of the mem-to-mem and the
* capture video node that belong to same FIMC IP instance.
*/
if (test_bit(ST_CAPT_BUSY, &fimc->state))
goto unlock;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto unlock;
}
v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
ctx->fimc_dev = fimc;
/* Default color format */
ctx->s_frame.fmt = fimc_get_format(0);
ctx->d_frame.fmt = fimc_get_format(0);
ret = fimc_ctrls_create(ctx);
if (ret)
goto error_fh;
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrls.handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
/* Setup the device context for memory-to-memory mode */
ctx->state = FIMC_CTX_M2M;
ctx->flags = 0;
ctx->in_path = FIMC_IO_DMA;
ctx->out_path = FIMC_IO_DMA;
ctx->scaler.enabled = 1;
ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
goto error_c;
}
if (fimc->m2m.refcnt++ == 0)
set_bit(ST_M2M_RUN, &fimc->state);
ret = fimc_m2m_set_default_format(ctx);
if (ret < 0)
goto error_m2m_ctx;
mutex_unlock(&fimc->lock);
return 0;
error_m2m_ctx:
v4l2_m2m_ctx_release(ctx->m2m_ctx);
error_c:
fimc_ctrls_delete(ctx);
error_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
unlock:
mutex_unlock(&fimc->lock);
return ret;
}
static int bdisp_open(struct file *file)
{
struct bdisp_dev *bdisp = video_drvdata(file);
struct bdisp_ctx *ctx = NULL;
int ret;
if (mutex_lock_interruptible(&bdisp->lock))
return -ERESTARTSYS;
/* Allocate memory for both context and node */
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto unlock;
}
ctx->bdisp_dev = bdisp;
if (bdisp_hw_alloc_nodes(ctx)) {
dev_err(bdisp->dev, "no memory for nodes\n");
ret = -ENOMEM;
goto mem_ctx;
}
v4l2_fh_init(&ctx->fh, bdisp->m2m.vdev);
ret = bdisp_ctrls_create(ctx);
if (ret) {
dev_err(bdisp->dev, "Failed to create control\n");
goto error_fh;
}
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
/* Default format */
ctx->src = bdisp_dflt_fmt;
ctx->dst = bdisp_dflt_fmt;
/* Setup the device context for mem2mem mode. */
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(bdisp->m2m.m2m_dev, ctx,
queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
dev_err(bdisp->dev, "Failed to initialize m2m context\n");
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto error_ctrls;
}
bdisp->m2m.refcnt++;
set_bit(ST_M2M_OPEN, &bdisp->state);
dev_dbg(bdisp->dev, "driver opened, ctx = 0x%p\n", ctx);
mutex_unlock(&bdisp->lock);
return 0;
error_ctrls:
bdisp_ctrls_delete(ctx);
error_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
bdisp_hw_free_nodes(ctx);
mem_ctx:
kfree(ctx);
unlock:
mutex_unlock(&bdisp->lock);
return ret;
}
static int fimc_m2m_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
struct fimc_ctx *ctx;
int ret = -EBUSY;
dbg("pid: %d, state: 0x%lx, refcnt: %d",
task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
/*
* Return if the corresponding video capture node
* is already opened.
*/
if (fimc->vid_cap.refcnt > 0)
goto unlock;
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto unlock;
}
v4l2_fh_init(&ctx->fh, fimc->m2m.vfd);
ctx->fimc_dev = fimc;
/* Default color format */
ctx->s_frame.fmt = fimc_get_format(0);
ctx->d_frame.fmt = fimc_get_format(0);
ret = fimc_ctrls_create(ctx);
if (ret)
goto error_fh;
/* Use separate control handler per file handle */
ctx->fh.ctrl_handler = &ctx->ctrls.handler;
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
/* Setup the device context for memory-to-memory mode */
ctx->state = FIMC_CTX_M2M;
ctx->flags = 0;
ctx->in_path = FIMC_IO_DMA;
ctx->out_path = FIMC_IO_DMA;
ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
ret = PTR_ERR(ctx->m2m_ctx);
goto error_c;
}
if (fimc->m2m.refcnt++ == 0)
set_bit(ST_M2M_RUN, &fimc->state);
mutex_unlock(&fimc->lock);
return 0;
error_c:
fimc_ctrls_delete(ctx);
error_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
unlock:
mutex_unlock(&fimc->lock);
return ret;
}
static int hva_open(struct file *file)
{
struct hva_dev *hva = video_drvdata(file);
struct device *dev = hva_to_dev(hva);
struct hva_ctx *ctx;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
ret = -ENOMEM;
goto out;
}
ctx->hva_dev = hva;
INIT_WORK(&ctx->run_work, hva_run_work);
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ret = hva_ctrls_setup(ctx);
if (ret) {
dev_err(dev, "%s [x:x] failed to setup controls\n",
HVA_PREFIX);
goto err_fh;
}
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
mutex_init(&ctx->lock);
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(hva->m2m_dev, ctx,
&hva_queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
dev_err(dev, "%s failed to initialize m2m context (%d)\n",
HVA_PREFIX, ret);
goto err_ctrls;
}
/* set the instance name */
mutex_lock(&hva->lock);
hva->instance_id++;
snprintf(ctx->name, sizeof(ctx->name), "[%3d:----]",
hva->instance_id);
mutex_unlock(&hva->lock);
/* default parameters for frame and stream */
set_default_params(ctx);
dev_info(dev, "%s encoder instance created\n", ctx->name);
return 0;
err_ctrls:
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
err_fh:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
out:
return ret;
}
