Removes most parameters from s2255_fh. These elements belong in s2255_ch.
In the future, s2255_fh will be removed when videobuf2 is used. videobuf2
has convenient and safe functions for locking streaming resources.
The removal of s2255_fh (and s2255_fh->resources) was not done now to
avoid using videobuf_queue_is_busy.
videobuf_queue_is busy may be unsafe as noted by the following comment
in videobuf-core.c:
"/* Locking: Only usage in bttv unsafe find way to remove */"
Signed-off-by: Dean Anderson <linux-...@sensoray.com>
---
drivers/media/usb/s2255/s2255drv.c | 224 +++++++++++++++++-------------------
1 file changed, 105 insertions(+), 119 deletions(-)
diff --git a/drivers/media/usb/s2255/s2255drv.c
b/drivers/media/usb/s2255/s2255drv.c
index 2e24aee..3ea1bd5e 100644
--- a/drivers/media/usb/s2255/s2255drv.c
+++ b/drivers/media/usb/s2255/s2255drv.c
@@ -251,6 +251,8 @@ struct s2255_vc {
unsigned int height;
const struct s2255_fmt *fmt;
int idx; /* channel number on device, 0-3 */
+ struct videobuf_queue vb_vidq;
+ enum v4l2_buf_type type;
};
@@ -296,10 +298,6 @@ struct s2255_buffer {
struct s2255_fh {
/* this must be the first field in this struct */
struct v4l2_fh fh;
- struct s2255_dev *dev;
- struct videobuf_queue vb_vidq;
- enum v4l2_buf_type type;
- struct s2255_vc *vc;
int resources;
};
@@ -674,8 +672,7 @@ static void s2255_fillbuff(struct s2255_vc *vc,
static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
unsigned int *size)
{
- struct s2255_fh *fh = vq->priv_data;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = vq->priv_data;
*size = vc->width * vc->height * (vc->fmt->depth >> 3);
if (0 == *count)
@@ -696,13 +693,12 @@ static void free_buffer(struct videobuf_queue *vq, struct
s2255_buffer *buf)
static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer
*vb,
enum v4l2_field field)
{
- struct s2255_fh *fh = vq->priv_data;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = vq->priv_data;
struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
int rc;
int w = vc->width;
int h = vc->height;
- dprintk(fh->dev, 4, "%s, field=%d\n", __func__, field);
+ dprintk(vc->dev, 4, "%s, field=%d\n", __func__, field);
if (vc->fmt == NULL)
return -EINVAL;
@@ -710,12 +706,12 @@ static int buffer_prepare(struct videobuf_queue *vq,
struct videobuf_buffer *vb,
(w > norm_maxw(vc)) ||
(h < norm_minh(vc)) ||
(h > norm_maxh(vc))) {
- dprintk(fh->dev, 4, "invalid buffer prepare\n");
+ dprintk(vc->dev, 4, "invalid buffer prepare\n");
return -EINVAL;
}
buf->vb.size = w * h * (vc->fmt->depth >> 3);
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) {
- dprintk(fh->dev, 4, "invalid buffer prepare\n");
+ dprintk(vc->dev, 4, "invalid buffer prepare\n");
return -EINVAL;
}
@@ -740,9 +736,8 @@ fail:
static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
- struct s2255_fh *fh = vq->priv_data;
- struct s2255_vc *vc = fh->vc;
- dprintk(fh->dev, 1, "%s\n", __func__);
+ struct s2255_vc *vc = vq->priv_data;
+ dprintk(vc->dev, 1, "%s\n", __func__);
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vc->buf_list);
}
@@ -751,8 +746,8 @@ static void buffer_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
- struct s2255_fh *fh = vq->priv_data;
- dprintk(fh->dev, 4, "%s %d\n", __func__, fh->vc->idx);
+ struct s2255_vc *vc = vq->priv_data;
+ dprintk(vc->dev, 4, "%s %d\n", __func__, vc->idx);
free_buffer(vq, buf);
}
@@ -764,22 +759,21 @@ static struct videobuf_queue_ops s2255_video_qops = {
};
-static int res_get(struct s2255_fh *fh)
+static int res_get(struct s2255_fh *fh, struct s2255_vc *vc)
{
- struct s2255_vc *vc = fh->vc;
/* is it free? */
if (vc->resources)
return 0; /* no, someone else uses it */
/* it's free, grab it */
vc->resources = 1;
fh->resources = 1;
- dprintk(fh->dev, 1, "s2255: res: get\n");
+ dprintk(vc->dev, 1, "s2255: res: get\n");
return 1;
}
-static int res_locked(struct s2255_fh *fh)
+static int res_locked(struct s2255_vc *vc)
{
- return fh->vc->resources;
+ return vc->resources;
}
static int res_check(struct s2255_fh *fh)
@@ -788,9 +782,8 @@ static int res_check(struct s2255_fh *fh)
}
-static void res_free(struct s2255_fh *fh)
+static void res_free(struct s2255_fh *fh, struct s2255_vc *vc)
{
- struct s2255_vc *vc = fh->vc;
vc->resources = 0;
fh->resources = 0;
}
@@ -798,8 +791,8 @@ static void res_free(struct s2255_fh *fh)
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
- struct s2255_fh *fh = file->private_data;
- struct s2255_dev *dev = fh->dev;
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_dev *dev = vc->dev;
strlcpy(cap->driver, "s2255", sizeof(cap->driver));
strlcpy(cap->card, "s2255", sizeof(cap->card));
@@ -827,8 +820,7 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void
*priv,
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
int is_ntsc = vc->std & V4L2_STD_525_60;
f->fmt.pix.width = vc->width;
@@ -851,8 +843,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void
*priv,
{
const struct s2255_fmt *fmt;
enum v4l2_field field;
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
int is_ntsc = vc->std & V4L2_STD_525_60;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
@@ -862,7 +853,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void
*priv,
field = f->fmt.pix.field;
- dprintk(fh->dev, 50, "%s NTSC: %d suggested width: %d, height: %d\n",
+ dprintk(vc->dev, 50, "%s NTSC: %d suggested width: %d, height: %d\n",
__func__, is_ntsc, f->fmt.pix.width, f->fmt.pix.height);
if (is_ntsc) {
/* NTSC */
@@ -904,7 +895,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void
*priv,
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
f->fmt.pix.priv = 0;
- dprintk(fh->dev, 50, "%s: set width %d height %d field %d\n", __func__,
+ dprintk(vc->dev, 50, "%s: set width %d height %d field %d\n", __func__,
f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
return 0;
}
@@ -912,14 +903,13 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void
*priv,
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
const struct s2255_fmt *fmt;
- struct videobuf_queue *q = &fh->vb_vidq;
+ struct videobuf_queue *q = &vc->vb_vidq;
struct s2255_mode mode;
int ret;
- ret = vidioc_try_fmt_vid_cap(file, fh, f);
+ ret = vidioc_try_fmt_vid_cap(file, vc, f);
if (ret < 0)
return ret;
@@ -931,14 +921,14 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void
*priv,
mutex_lock(&q->vb_lock);
- if (videobuf_queue_is_busy(&fh->vb_vidq)) {
- dprintk(fh->dev, 1, "queue busy\n");
+ if (videobuf_queue_is_busy(&vc->vb_vidq)) {
+ dprintk(vc->dev, 1, "queue busy\n");
ret = -EBUSY;
goto out_s_fmt;
}
- if (res_locked(fh)) {
- dprintk(fh->dev, 1, "%s: channel busy\n", __func__);
+ if (res_locked(vc)) {
+ dprintk(vc->dev, 1, "%s: channel busy\n", __func__);
ret = -EBUSY;
goto out_s_fmt;
}
@@ -946,8 +936,8 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void
*priv,
vc->fmt = fmt;
vc->width = f->fmt.pix.width;
vc->height = f->fmt.pix.height;
- fh->vb_vidq.field = f->fmt.pix.field;
- fh->type = f->type;
+ vc->vb_vidq.field = f->fmt.pix.field;
+ vc->type = f->type;
if (vc->width > norm_minw(vc)) {
if (vc->height > norm_minh(vc)) {
if (vc->cap_parm.capturemode &
@@ -1002,32 +992,32 @@ static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
int rc;
- struct s2255_fh *fh = priv;
- rc = videobuf_reqbufs(&fh->vb_vidq, p);
+ struct s2255_vc *vc = video_drvdata(file);
+ rc = videobuf_reqbufs(&vc->vb_vidq, p);
return rc;
}
static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer
*p)
{
int rc;
- struct s2255_fh *fh = priv;
- rc = videobuf_querybuf(&fh->vb_vidq, p);
+ struct s2255_vc *vc = video_drvdata(file);
+ rc = videobuf_querybuf(&vc->vb_vidq, p);
return rc;
}
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
int rc;
- struct s2255_fh *fh = priv;
- rc = videobuf_qbuf(&fh->vb_vidq, p);
+ struct s2255_vc *vc = video_drvdata(file);
+ rc = videobuf_qbuf(&vc->vb_vidq, p);
return rc;
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
int rc;
- struct s2255_fh *fh = priv;
- rc = videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK);
+ struct s2255_vc *vc = video_drvdata(file);
+ rc = videobuf_dqbuf(&vc->vb_vidq, p, file->f_flags & O_NONBLOCK);
return rc;
}
@@ -1217,21 +1207,21 @@ static int s2255_cmd_status(struct s2255_vc *vc, u32
*pstatus)
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
int res;
- struct s2255_fh *fh = priv;
- struct s2255_dev *dev = fh->dev;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_dev *dev = vc->dev;
+ struct s2255_fh *fh = file->private_data;
int j;
dprintk(dev, 4, "%s\n", __func__);
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ if (vc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
dev_err(&dev->udev->dev, "invalid fh type0\n");
return -EINVAL;
}
- if (i != fh->type) {
+ if (i != vc->type) {
dev_err(&dev->udev->dev, "invalid fh type1\n");
return -EINVAL;
}
- if (!res_get(fh)) {
+ if (!res_get(fh, vc)) {
s2255_dev_err(&dev->udev->dev, "stream busy\n");
return -EBUSY;
}
@@ -1243,49 +1233,49 @@ static int vidioc_streamon(struct file *file, void
*priv, enum v4l2_buf_type i)
vc->buffer.frame[j].ulState = S2255_READ_IDLE;
vc->buffer.frame[j].cur_size = 0;
}
- res = videobuf_streamon(&fh->vb_vidq);
+ res = videobuf_streamon(&vc->vb_vidq);
if (res == 0) {
s2255_start_acquire(vc);
vc->b_acquire = 1;
} else
- res_free(fh);
+ res_free(fh, vc);
return res;
}
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type
i)
{
- struct s2255_fh *fh = priv;
- dprintk(fh->dev, 4, "%s\n, channel: %d", __func__, fh->vc->idx);
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- dprintk(fh->dev, 1, "invalid fh type0\n");
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_fh *fh = file->private_data;
+ dprintk(vc->dev, 4, "%s\n, channel: %d", __func__, vc->idx);
+ if (vc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ dprintk(vc->dev, 1, "invalid fh type0\n");
return -EINVAL;
}
- if (i != fh->type)
+ if (i != vc->type)
return -EINVAL;
- s2255_stop_acquire(fh->vc);
- videobuf_streamoff(&fh->vb_vidq);
- res_free(fh);
+ s2255_stop_acquire(vc);
+ videobuf_streamoff(&vc->vb_vidq);
+ res_free(fh, vc);
return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id i)
{
- struct s2255_fh *fh = priv;
+ struct s2255_vc *vc = video_drvdata(file);
struct s2255_mode mode;
- struct videobuf_queue *q = &fh->vb_vidq;
- struct s2255_vc *vc = fh->vc;
+ struct videobuf_queue *q = &vc->vb_vidq;
int ret = 0;
mutex_lock(&q->vb_lock);
- if (res_locked(fh)) {
- dprintk(fh->dev, 1, "can't change standard after started\n");
+ if (res_locked(vc)) {
+ dprintk(vc->dev, 1, "can't change standard after started\n");
ret = -EBUSY;
goto out_s_std;
}
- mode = fh->vc->mode;
+ mode = vc->mode;
if (i & V4L2_STD_525_60) {
- dprintk(fh->dev, 4, "%s 60 Hz\n", __func__);
+ dprintk(vc->dev, 4, "%s 60 Hz\n", __func__);
/* if changing format, reset frame decimation/intervals */
if (mode.format != FORMAT_NTSC) {
mode.restart = 1;
@@ -1295,7 +1285,7 @@ static int vidioc_s_std(struct file *file, void *priv,
v4l2_std_id i)
vc->height = NUM_LINES_4CIFS_NTSC * 2;
}
} else if (i & V4L2_STD_625_50) {
- dprintk(fh->dev, 4, "%s 50 Hz\n", __func__);
+ dprintk(vc->dev, 4, "%s 50 Hz\n", __func__);
if (mode.format != FORMAT_PAL) {
mode.restart = 1;
mode.format = FORMAT_PAL;
@@ -1307,9 +1297,9 @@ static int vidioc_s_std(struct file *file, void *priv,
v4l2_std_id i)
ret = -EINVAL;
goto out_s_std;
}
- fh->vc->std = i;
+ vc->std = i;
if (mode.restart)
- s2255_set_mode(fh->vc, &mode);
+ s2255_set_mode(vc, &mode);
out_s_std:
mutex_unlock(&q->vb_lock);
return ret;
@@ -1317,9 +1307,9 @@ out_s_std:
static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *i)
{
- struct s2255_fh *fh = priv;
+ struct s2255_vc *vc = video_drvdata(file);
- *i = fh->vc->std;
+ *i = vc->std;
return 0;
}
@@ -1333,10 +1323,10 @@ static int vidioc_g_std(struct file *file, void *priv,
v4l2_std_id *i)
static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *inp)
{
- struct s2255_fh *fh = priv;
- struct s2255_dev *dev = fh->dev;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_dev *dev = vc->dev;
u32 status = 0;
+
if (inp->index != 0)
return -EINVAL;
inp->type = V4L2_INPUT_TYPE_CAMERA;
@@ -1344,7 +1334,7 @@ static int vidioc_enum_input(struct file *file, void
*priv,
inp->status = 0;
if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
int rc;
- rc = s2255_cmd_status(fh->vc, &status);
+ rc = s2255_cmd_status(vc, &status);
dprintk(dev, 4, "s2255_cmd_status rc: %d status %x\n",
rc, status);
if (rc == 0)
@@ -1418,33 +1408,32 @@ static int s2255_s_ctrl(struct v4l2_ctrl *ctrl)
static int vidioc_g_jpegcomp(struct file *file, void *priv,
struct v4l2_jpegcompression *jc)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
memset(jc, 0, sizeof(*jc));
jc->quality = vc->jpegqual;
- dprintk(fh->dev, 2, "%s: quality %d\n", __func__, jc->quality);
+ dprintk(vc->dev, 2, "%s: quality %d\n", __func__, jc->quality);
return 0;
}
static int vidioc_s_jpegcomp(struct file *file, void *priv,
const struct v4l2_jpegcompression *jc)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
+
if (jc->quality < 0 || jc->quality > 100)
return -EINVAL;
v4l2_ctrl_s_ctrl(vc->jpegqual_ctrl, jc->quality);
- dprintk(fh->dev, 2, "%s: quality %d\n", __func__, jc->quality);
+ dprintk(vc->dev, 2, "%s: quality %d\n", __func__, jc->quality);
return 0;
}
static int vidioc_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
- struct s2255_fh *fh = priv;
__u32 def_num, def_dem;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
+
if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
sp->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
@@ -1467,7 +1456,7 @@ static int vidioc_g_parm(struct file *file, void *priv,
sp->parm.capture.timeperframe.numerator = def_num * 5;
break;
}
- dprintk(fh->dev, 4, "%s capture mode, %d timeperframe %d/%d\n",
+ dprintk(vc->dev, 4, "%s capture mode, %d timeperframe %d/%d\n",
__func__,
sp->parm.capture.capturemode,
sp->parm.capture.timeperframe.numerator,
@@ -1478,8 +1467,7 @@ static int vidioc_g_parm(struct file *file, void *priv,
static int vidioc_s_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
struct s2255_mode mode;
int fdec = FDEC_1;
__u32 def_num, def_dem;
@@ -1488,7 +1476,7 @@ static int vidioc_s_parm(struct file *file, void *priv,
mode = vc->mode;
/* high quality capture mode requires a stream restart */
if (vc->cap_parm.capturemode
- != sp->parm.capture.capturemode && res_locked(fh))
+ != sp->parm.capture.capturemode && res_locked(vc))
return -EBUSY;
def_num = (mode.format == FORMAT_NTSC) ? 1001 : 1000;
def_dem = (mode.format == FORMAT_NTSC) ? 30000 : 25000;
@@ -1509,7 +1497,7 @@ static int vidioc_s_parm(struct file *file, void *priv,
mode.fdec = fdec;
sp->parm.capture.timeperframe.denominator = def_dem;
s2255_set_mode(vc, &mode);
- dprintk(fh->dev, 4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
+ dprintk(vc->dev, 4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
__func__,
sp->parm.capture.capturemode,
sp->parm.capture.timeperframe.numerator,
@@ -1532,8 +1520,7 @@ static const struct v4l2_frmsize_discrete pal_sizes[] = {
static int vidioc_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fe)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
int is_ntsc = vc->std & V4L2_STD_525_60;
const struct s2255_fmt *fmt;
@@ -1551,8 +1538,7 @@ static int vidioc_enum_framesizes(struct file *file, void
*priv,
static int vidioc_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fe)
{
- struct s2255_fh *fh = priv;
- struct s2255_vc *vc = fh->vc;
+ struct s2255_vc *vc = video_drvdata(file);
const struct s2255_fmt *fmt;
const struct v4l2_frmsize_discrete *sizes;
int is_ntsc = vc->std & V4L2_STD_525_60;
@@ -1578,7 +1564,7 @@ static int vidioc_enum_frameintervals(struct file *file,
void *priv,
fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fe->discrete.denominator = is_ntsc ? 30000 : 25000;
fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
- dprintk(fh->dev, 4, "%s discrete %d/%d\n", __func__,
+ dprintk(vc->dev, 4, "%s discrete %d/%d\n", __func__,
fe->discrete.numerator,
fe->discrete.denominator);
return 0;
@@ -1662,9 +1648,7 @@ static int __s2255_open(struct file *file)
v4l2_fh_init(&fh->fh, vdev);
v4l2_fh_add(&fh->fh);
file->private_data = &fh->fh;
- fh->dev = dev;
- fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- fh->vc = vc;
+
if (!vc->configured) {
/* configure channel to default state */
vc->fmt = &formats[0];
@@ -1677,12 +1661,12 @@ static int __s2255_open(struct file *file)
(unsigned long)fh, (unsigned long)dev);
dprintk(dev, 4, "%s: list_empty active=%d\n", __func__,
list_empty(&vc->buf_list));
- videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops,
+ videobuf_queue_vmalloc_init(&vc->vb_vidq, &s2255_video_qops,
NULL, &dev->slock,
- fh->type,
+ vc->type,
V4L2_FIELD_INTERLACED,
sizeof(struct s2255_buffer),
- fh, vdev->lock);
+ vc, vdev->lock);
return 0;
}
@@ -1701,15 +1685,15 @@ static int s2255_open(struct file *file)
static unsigned int s2255_poll(struct file *file,
struct poll_table_struct *wait)
{
- struct s2255_fh *fh = file->private_data;
- struct s2255_dev *dev = fh->dev;
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_dev *dev = vc->dev;
int rc = v4l2_ctrl_poll(file, wait);
dprintk(dev, 100, "%s\n", __func__);
- if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != vc->type)
return POLLERR;
mutex_lock(&dev->lock);
- rc |= videobuf_poll_stream(file, &fh->vb_vidq, wait);
+ rc |= videobuf_poll_stream(file, &vc->vb_vidq, wait);
mutex_unlock(&dev->lock);
return rc;
}
@@ -1740,20 +1724,22 @@ static void s2255_destroy(struct s2255_dev *dev)
static int s2255_release(struct file *file)
{
struct s2255_fh *fh = file->private_data;
- struct s2255_dev *dev = fh->dev;
+ struct s2255_vc *vc = video_drvdata(file);
+ struct s2255_dev *dev = vc->dev;
struct video_device *vdev = video_devdata(file);
- struct s2255_vc *vc = fh->vc;
+
if (!dev)
return -ENODEV;
+
mutex_lock(&dev->lock);
/* turn off stream */
if (res_check(fh)) {
if (vc->b_acquire)
- s2255_stop_acquire(fh->vc);
- videobuf_streamoff(&fh->vb_vidq);
- res_free(fh);
+ s2255_stop_acquire(vc);
+ videobuf_streamoff(&vc->vb_vidq);
+ res_free(fh, vc);
}
- videobuf_mmap_free(&fh->vb_vidq);
+ videobuf_mmap_free(&vc->vb_vidq);
mutex_unlock(&dev->lock);
dprintk(dev, 1, "%s[%s]\n", __func__, video_device_node_name(vdev));
v4l2_fh_del(&fh->fh);
@@ -1764,16 +1750,16 @@ static int s2255_release(struct file *file)
static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma)
{
- struct s2255_fh *fh = file->private_data;
+ struct s2255_vc *vc = video_drvdata(file);
struct s2255_dev *dev;
int ret;
- if (!fh)
+ if (!vc)
return -ENODEV;
- dev = fh->dev;
+ dev = vc->dev;
dprintk(dev, 4, "%s, vma=0x%08lx\n", __func__, (unsigned long)vma);
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
- ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
+ ret = videobuf_mmap_mapper(&vc->vb_vidq, vma);
mutex_unlock(&dev->lock);
dprintk(dev, 4, "%s vma start=0x%08lx, size=%ld, ret=%d\n", __func__,
(unsigned long)vma->vm_start,
--
1.7.9.5
--
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