[media] s5p-fimc: Use v4l core mutex in ioctl and file operations

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2010-12-01 10:25:18 -03:00 committed by Mauro Carvalho Chehab
parent ef7af59b2c
commit 8293ebfce2
2 changed files with 58 additions and 265 deletions

View File

@ -406,29 +406,23 @@ static int fimc_capture_open(struct file *file)
if (fimc_m2m_active(fimc))
return -EBUSY;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (++fimc->vid_cap.refcnt == 1) {
ret = fimc_isp_subdev_init(fimc, -1);
if (ret) {
fimc->vid_cap.refcnt--;
ret = -EIO;
return -EIO;
}
}
file->private_data = fimc->vid_cap.ctx;
mutex_unlock(&fimc->lock);
return ret;
return 0;
}
static int fimc_capture_close(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
if (--fimc->vid_cap.refcnt == 0) {
@ -441,7 +435,6 @@ static int fimc_capture_close(struct file *file)
fimc_subdev_unregister(fimc);
}
mutex_unlock(&fimc->lock);
return 0;
}
@ -450,30 +443,16 @@ static unsigned int fimc_capture_poll(struct file *file,
{
struct fimc_ctx *ctx = file->private_data;
struct fimc_dev *fimc = ctx->fimc_dev;
int ret;
if (mutex_lock_interruptible(&fimc->lock))
return POLLERR;
ret = vb2_poll(&fimc->vid_cap.vbq, file, wait);
mutex_unlock(&fimc->lock);
return ret;
return vb2_poll(&fimc->vid_cap.vbq, file, wait);
}
static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma)
{
struct fimc_ctx *ctx = file->private_data;
struct fimc_dev *fimc = ctx->fimc_dev;
int ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
ret = vb2_mmap(&fimc->vid_cap.vbq, vma);
mutex_unlock(&fimc->lock);
return ret;
return vb2_mmap(&fimc->vid_cap.vbq, vma);
}
/* video device file operations */
@ -555,13 +534,6 @@ static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
if (ret)
return ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (fimc_capture_active(fimc)) {
ret = -EBUSY;
goto sf_unlock;
}
if (vb2_is_streaming(&fimc->vid_cap.vbq) || fimc_capture_active(fimc))
return -EBUSY;
@ -571,8 +543,7 @@ static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
frame->fmt = find_format(f, FMT_FLAGS_M2M | FMT_FLAGS_CAM);
if (!frame->fmt) {
err("fimc target format not found\n");
ret = -EINVAL;
goto sf_unlock;
return -EINVAL;
}
for (i = 0; i < frame->fmt->colplanes; i++)
@ -589,12 +560,9 @@ static int fimc_cap_s_fmt_mplane(struct file *file, void *priv,
frame->offs_h = 0;
frame->offs_v = 0;
ret = sync_capture_fmt(ctx);
ctx->state |= (FIMC_PARAMS | FIMC_DST_FMT);
sf_unlock:
mutex_unlock(&fimc->lock);
ret = sync_capture_fmt(ctx);
return ret;
}
@ -623,21 +591,16 @@ static int fimc_cap_s_input(struct file *file, void *priv,
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
struct s3c_platform_fimc *pdata = fimc->pdata;
int ret;
if (fimc_capture_active(ctx->fimc_dev))
return -EBUSY;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i])
return -EINVAL;
if (i >= FIMC_MAX_CAMIF_CLIENTS || !pdata->isp_info[i]) {
ret = -EINVAL;
goto si_unlock;
}
if (fimc->vid_cap.sd) {
ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
int ret = v4l2_subdev_call(fimc->vid_cap.sd, core, s_power, 0);
if (ret)
err("s_power failed: %d", ret);
}
@ -645,11 +608,7 @@ static int fimc_cap_s_input(struct file *file, void *priv,
/* Release the attached sensor subdevice. */
fimc_subdev_unregister(fimc);
ret = fimc_isp_subdev_init(fimc, i);
si_unlock:
mutex_unlock(&fimc->lock);
return ret;
return fimc_isp_subdev_init(fimc, i);
}
static int fimc_cap_g_input(struct file *file, void *priv,
@ -665,112 +624,41 @@ static int fimc_cap_g_input(struct file *file, void *priv,
static int fimc_cap_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct s3c_fimc_isp_info *isp_info;
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
int ret = -EBUSY;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (fimc_capture_active(fimc) || !fimc->vid_cap.sd)
goto s_unlock;
return -EBUSY;
if (!(ctx->state & FIMC_DST_FMT)) {
v4l2_err(&fimc->vid_cap.v4l2_dev, "Format is not set\n");
ret = -EINVAL;
goto s_unlock;
return -EINVAL;
}
ret = v4l2_subdev_call(fimc->vid_cap.sd, video, s_stream, 1);
if (ret && ret != -ENOIOCTLCMD)
goto s_unlock;
ret = fimc_prepare_config(ctx, ctx->state);
if (ret)
goto s_unlock;
isp_info = fimc->pdata->isp_info[fimc->vid_cap.input_index];
fimc_hw_set_camera_type(fimc, isp_info);
fimc_hw_set_camera_source(fimc, isp_info);
fimc_hw_set_camera_offset(fimc, &ctx->s_frame);
if (ctx->state & FIMC_PARAMS) {
ret = fimc_set_scaler_info(ctx);
if (ret) {
err("Scaler setup error");
goto s_unlock;
}
fimc_hw_set_input_path(ctx);
fimc_hw_set_scaler(ctx);
fimc_hw_set_target_format(ctx);
fimc_hw_set_rotation(ctx);
fimc_hw_set_effect(ctx);
}
fimc_hw_set_output_path(ctx);
fimc_hw_set_out_dma(ctx);
INIT_LIST_HEAD(&fimc->vid_cap.pending_buf_q);
INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q);
fimc->vid_cap.active_buf_cnt = 0;
fimc->vid_cap.frame_count = 0;
fimc->vid_cap.buf_index = fimc_hw_get_frame_index(fimc);
set_bit(ST_CAPT_PEND, &fimc->state);
ret = vb2_streamon(&fimc->vid_cap.vbq, type);
s_unlock:
mutex_unlock(&fimc->lock);
return ret;
return vb2_streamon(&fimc->vid_cap.vbq, type);
}
static int fimc_cap_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
enum v4l2_buf_type type)
{
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
struct fimc_vid_cap *cap = &fimc->vid_cap;
unsigned long flags;
int ret;
spin_lock_irqsave(&fimc->slock, flags);
if (!fimc_capture_running(fimc) && !fimc_capture_pending(fimc)) {
spin_unlock_irqrestore(&fimc->slock, flags);
dbg("state: 0x%lx", fimc->state);
return -EINVAL;
}
spin_unlock_irqrestore(&fimc->slock, flags);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
fimc_stop_capture(fimc);
ret = vb2_streamoff(&cap->vbq, type);
mutex_unlock(&fimc->lock);
return ret;
return vb2_streamoff(&fimc->vid_cap.vbq, type);
}
static int fimc_cap_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *reqbufs)
{
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
struct fimc_vid_cap *cap = &fimc->vid_cap;
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
int ret;
if (fimc_capture_active(ctx->fimc_dev))
return -EBUSY;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
ret = vb2_reqbufs(&cap->vbq, reqbufs);
if (!ret)
cap->reqbufs_count = reqbufs->count;
mutex_unlock(&fimc->lock);
return ret;
}
@ -780,9 +668,6 @@ static int fimc_cap_querybuf(struct file *file, void *priv,
struct fimc_ctx *ctx = priv;
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
if (fimc_capture_active(ctx->fimc_dev))
return -EBUSY;
return vb2_querybuf(&cap->vbq, buf);
}
@ -790,33 +675,16 @@ static int fimc_cap_qbuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
struct fimc_vid_cap *cap = &fimc->vid_cap;
int ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
ret = vb2_qbuf(&cap->vbq, buf);
mutex_unlock(&fimc->lock);
return ret;
struct fimc_vid_cap *cap = &ctx->fimc_dev->vid_cap;
return vb2_qbuf(&cap->vbq, buf);
}
static int fimc_cap_dqbuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
struct fimc_ctx *ctx = priv;
int ret;
if (mutex_lock_interruptible(&ctx->fimc_dev->lock))
return -ERESTARTSYS;
ret = vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
return vb2_dqbuf(&ctx->fimc_dev->vid_cap.vbq, buf,
file->f_flags & O_NONBLOCK);
mutex_unlock(&ctx->fimc_dev->lock);
return ret;
}
static int fimc_cap_s_ctrl(struct file *file, void *priv,
@ -825,9 +693,6 @@ static int fimc_cap_s_ctrl(struct file *file, void *priv,
struct fimc_ctx *ctx = priv;
int ret = -EINVAL;
if (mutex_lock_interruptible(&ctx->fimc_dev->lock))
return -ERESTARTSYS;
/* Allow any controls but 90/270 rotation while streaming */
if (!fimc_capture_active(ctx->fimc_dev) ||
ctrl->id != V4L2_CID_ROTATE ||
@ -842,8 +707,6 @@ static int fimc_cap_s_ctrl(struct file *file, void *priv,
if (ret == -EINVAL)
ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
core, s_ctrl, ctrl);
mutex_unlock(&ctx->fimc_dev->lock);
return ret;
}
@ -852,13 +715,10 @@ static int fimc_cap_cropcap(struct file *file, void *fh,
{
struct fimc_frame *f;
struct fimc_ctx *ctx = fh;
struct fimc_dev *fimc = ctx->fimc_dev;
if (cr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
f = &ctx->s_frame;
cr->bounds.left = 0;
@ -867,7 +727,6 @@ static int fimc_cap_cropcap(struct file *file, void *fh,
cr->bounds.height = f->o_height;
cr->defrect = cr->bounds;
mutex_unlock(&fimc->lock);
return 0;
}
@ -875,19 +734,14 @@ static int fimc_cap_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
{
struct fimc_frame *f;
struct fimc_ctx *ctx = file->private_data;
struct fimc_dev *fimc = ctx->fimc_dev;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
f = &ctx->s_frame;
cr->c.left = f->offs_h;
cr->c.top = f->offs_v;
cr->c.width = f->width;
cr->c.height = f->height;
mutex_unlock(&fimc->lock);
return 0;
}
@ -906,13 +760,10 @@ static int fimc_cap_s_crop(struct file *file, void *fh,
if (ret)
return ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (!(ctx->state & FIMC_DST_FMT)) {
v4l2_err(&fimc->vid_cap.v4l2_dev,
"Capture color format not set\n");
goto sc_unlock;
return -EINVAL; /* TODO: make sure this is the right value */
}
f = &ctx->s_frame;
@ -920,17 +771,15 @@ static int fimc_cap_s_crop(struct file *file, void *fh,
ret = fimc_check_scaler_ratio(&cr->c, &ctx->d_frame);
if (ret) {
v4l2_err(&fimc->vid_cap.v4l2_dev, "Out of the scaler range");
} else {
ret = 0;
f->offs_h = cr->c.left;
f->offs_v = cr->c.top;
f->width = cr->c.width;
f->height = cr->c.height;
return ret;
}
sc_unlock:
mutex_unlock(&fimc->lock);
return ret;
f->offs_h = cr->c.left;
f->offs_v = cr->c.top;
f->width = cr->c.width;
f->height = cr->c.height;
return 0;
}
@ -1013,6 +862,7 @@ int fimc_register_capture_device(struct fimc_dev *fimc)
vfd->ioctl_ops = &fimc_capture_ioctl_ops;
vfd->minor = -1;
vfd->release = video_device_release;
vfd->lock = &fimc->lock;
video_set_drvdata(vfd, fimc);
vid_cap = &fimc->vid_cap;

View File

@ -741,22 +741,17 @@ int fimc_vidioc_g_fmt_mplane(struct file *file, void *priv,
struct v4l2_format *f)
{
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
struct fimc_frame *frame;
frame = ctx_get_frame(ctx, f->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
f->fmt.pix.width = frame->width;
f->fmt.pix.height = frame->height;
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.pixelformat = frame->fmt->fourcc;
mutex_unlock(&fimc->lock);
return 0;
}
@ -800,7 +795,8 @@ int fimc_vidioc_try_fmt_mplane(struct file *file, void *priv,
struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
struct fimc_fmt *fmt;
u32 max_width, mod_x, mod_y, mask;
int ret, i, is_output = 0;
int i, is_output = 0;
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
if (ctx->state & FIMC_CTX_CAP)
@ -810,8 +806,6 @@ int fimc_vidioc_try_fmt_mplane(struct file *file, void *priv,
return -EINVAL;
}
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
dbg("w: %d, h: %d", pix->width, pix->height);
mask = is_output ? FMT_FLAGS_M2M : FMT_FLAGS_M2M | FMT_FLAGS_CAM;
@ -819,13 +813,13 @@ int fimc_vidioc_try_fmt_mplane(struct file *file, void *priv,
if (!fmt) {
v4l2_err(&fimc->m2m.v4l2_dev, "Fourcc format (0x%X) invalid.\n",
pix->pixelformat);
goto tf_out;
return -EINVAL;
}
if (pix->field == V4L2_FIELD_ANY)
pix->field = V4L2_FIELD_NONE;
else if (V4L2_FIELD_NONE != pix->field)
goto tf_out;
return -EINVAL;
if (is_output) {
max_width = variant->pix_limit->scaler_dis_w;
@ -871,11 +865,7 @@ int fimc_vidioc_try_fmt_mplane(struct file *file, void *priv,
pix->plane_fmt[i].sizeimage);
}
ret = 0;
tf_out:
mutex_unlock(&fimc->lock);
return ret;
return 0;
}
static int fimc_m2m_s_fmt_mplane(struct file *file, void *priv,
@ -888,45 +878,33 @@ static int fimc_m2m_s_fmt_mplane(struct file *file, void *priv,
struct v4l2_pix_format_mplane *pix;
unsigned long flags;
int i, ret = 0;
u32 tmp;
ret = fimc_vidioc_try_fmt_mplane(file, priv, f);
if (ret)
return ret;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
if (vb2_is_streaming(vq)) {
v4l2_err(&fimc->vid_cap.v4l2_dev, "%s: queue (%d) busy\n",
__func__, f->type);
ret = -EBUSY;
goto sf_out;
v4l2_err(&fimc->m2m.v4l2_dev, "queue (%d) busy\n", f->type);
return -EBUSY;
}
spin_lock_irqsave(&ctx->slock, flags);
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
frame = &ctx->s_frame;
ctx->state |= FIMC_SRC_FMT;
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
frame = &ctx->d_frame;
ctx->state |= FIMC_DST_FMT;
} else {
spin_unlock_irqrestore(&ctx->slock, flags);
v4l2_err(&fimc->m2m.v4l2_dev,
"Wrong buffer/video queue type (%d)\n", f->type);
ret = -EINVAL;
goto sf_out;
return -EINVAL;
}
spin_unlock_irqrestore(&ctx->slock, flags);
pix = &f->fmt.pix_mp;
frame->fmt = find_format(f, FMT_FLAGS_M2M);
if (!frame->fmt) {
ret = -EINVAL;
goto sf_out;
}
if (!frame->fmt)
return -EINVAL;
for (i = 0; i < frame->fmt->colplanes; i++)
frame->payload[i] = pix->plane_fmt[i].bytesperline * pix->height;
@ -942,14 +920,13 @@ static int fimc_m2m_s_fmt_mplane(struct file *file, void *priv,
frame->offs_v = 0;
spin_lock_irqsave(&ctx->slock, flags);
ctx->state |= FIMC_PARAMS;
tmp = (frame == &ctx->d_frame) ? FIMC_DST_FMT : FIMC_SRC_FMT;
ctx->state |= FIMC_PARAMS | tmp;
spin_unlock_irqrestore(&ctx->slock, flags);
dbg("f_w: %d, f_h: %d", frame->f_width, frame->f_height);
sf_out:
mutex_unlock(&fimc->lock);
return ret;
return 0;
}
static int fimc_m2m_reqbufs(struct file *file, void *priv,
@ -1018,11 +995,8 @@ int fimc_vidioc_queryctrl(struct file *file, void *priv,
}
if (ctx->state & FIMC_CTX_CAP) {
if (mutex_lock_interruptible(&ctx->fimc_dev->lock))
return -ERESTARTSYS;
ret = v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
return v4l2_subdev_call(ctx->fimc_dev->vid_cap.sd,
core, queryctrl, qc);
mutex_unlock(&ctx->fimc_dev->lock);
}
return ret;
}
@ -1032,10 +1006,6 @@ int fimc_vidioc_g_ctrl(struct file *file, void *priv,
{
struct fimc_ctx *ctx = priv;
struct fimc_dev *fimc = ctx->fimc_dev;
int ret = 0;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
@ -1049,18 +1019,17 @@ int fimc_vidioc_g_ctrl(struct file *file, void *priv,
break;
default:
if (ctx->state & FIMC_CTX_CAP) {
ret = v4l2_subdev_call(fimc->vid_cap.sd, core,
g_ctrl, ctrl);
return v4l2_subdev_call(fimc->vid_cap.sd, core,
g_ctrl, ctrl);
} else {
v4l2_err(&fimc->m2m.v4l2_dev,
"Invalid control\n");
ret = -EINVAL;
return -EINVAL;
}
}
dbg("ctrl->value= %d", ctrl->value);
mutex_unlock(&fimc->lock);
return ret;
return 0;
}
int check_ctrl_val(struct fimc_ctx *ctx, struct v4l2_control *ctrl)
@ -1151,22 +1120,17 @@ static int fimc_m2m_cropcap(struct file *file, void *fh,
{
struct fimc_frame *frame;
struct fimc_ctx *ctx = fh;
struct fimc_dev *fimc = ctx->fimc_dev;
frame = ctx_get_frame(ctx, cr->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
cr->bounds.left = 0;
cr->bounds.top = 0;
cr->bounds.width = frame->f_width;
cr->bounds.height = frame->f_height;
cr->defrect = cr->bounds;
mutex_unlock(&fimc->lock);
return 0;
}
@ -1174,21 +1138,16 @@ static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr)
{
struct fimc_frame *frame;
struct fimc_ctx *ctx = file->private_data;
struct fimc_dev *fimc = ctx->fimc_dev;
frame = ctx_get_frame(ctx, cr->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
cr->c.left = frame->offs_h;
cr->c.top = frame->offs_v;
cr->c.width = frame->width;
cr->c.height = frame->height;
mutex_unlock(&fimc->lock);
return 0;
}
@ -1268,9 +1227,6 @@ static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
f = (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ?
&ctx->s_frame : &ctx->d_frame;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
spin_lock_irqsave(&ctx->slock, flags);
if (~ctx->state & (FIMC_SRC_FMT | FIMC_DST_FMT)) {
/* Check to see if scaling ratio is within supported range */
@ -1280,8 +1236,8 @@ static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
ret = fimc_check_scaler_ratio(&cr->c, &ctx->s_frame);
if (ret) {
v4l2_err(&fimc->m2m.v4l2_dev, "Out of scaler range");
ret = -EINVAL;
goto scr_unlock;
spin_unlock_irqrestore(&ctx->slock, flags);
return -EINVAL;
}
}
ctx->state |= FIMC_PARAMS;
@ -1291,9 +1247,7 @@ static int fimc_m2m_s_crop(struct file *file, void *fh, struct v4l2_crop *cr)
f->width = cr->c.width;
f->height = cr->c.height;
scr_unlock:
spin_unlock_irqrestore(&ctx->slock, flags);
mutex_unlock(&fimc->lock);
return 0;
}
@ -1364,10 +1318,6 @@ static int fimc_m2m_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
struct fimc_ctx *ctx = NULL;
int err = 0;
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
dbg("pid: %d, state: 0x%lx, refcnt: %d",
task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt);
@ -1376,19 +1326,15 @@ static int fimc_m2m_open(struct file *file)
* Return if the corresponding video capture node
* is already opened.
*/
if (fimc->vid_cap.refcnt > 0) {
err = -EBUSY;
goto err_unlock;
}
if (fimc->vid_cap.refcnt > 0)
return -EBUSY;
fimc->m2m.refcnt++;
set_bit(ST_OUTDMA_RUN, &fimc->state);
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx) {
err = -ENOMEM;
goto err_unlock;
}
if (!ctx)
return -ENOMEM;
file->private_data = ctx;
ctx->fimc_dev = fimc;
@ -1404,13 +1350,12 @@ static int fimc_m2m_open(struct file *file)
ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->m2m_ctx)) {
err = PTR_ERR(ctx->m2m_ctx);
int err = PTR_ERR(ctx->m2m_ctx);
kfree(ctx);
return err;
}
err_unlock:
mutex_unlock(&fimc->lock);
return err;
return 0;
}
static int fimc_m2m_release(struct file *file)
@ -1418,8 +1363,6 @@ static int fimc_m2m_release(struct file *file)
struct fimc_ctx *ctx = file->private_data;
struct fimc_dev *fimc = ctx->fimc_dev;
mutex_lock(&fimc->lock);
dbg("pid: %d, state: 0x%lx, refcnt= %d",
task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
@ -1428,7 +1371,6 @@ static int fimc_m2m_release(struct file *file)
if (--fimc->m2m.refcnt <= 0)
clear_bit(ST_OUTDMA_RUN, &fimc->state);
mutex_unlock(&fimc->lock);
return 0;
}
@ -1494,6 +1436,7 @@ static int fimc_register_m2m_device(struct fimc_dev *fimc)
vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
vfd->minor = -1;
vfd->release = video_device_release;
vfd->lock = &fimc->lock;
snprintf(vfd->name, sizeof(vfd->name), "%s:m2m", dev_name(&pdev->dev));