[media] stk-webcam: don't use private_data, use video_drvdata

file->private_data is needed to store the pointer to struct v4l2_fh.
So use video_drvdata to get hold of the stk_camera struct.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c
index f1cf9060ce71eae330c614dae421364c08d9d2ce..49a4dfd22bf23a0a839a3791e1bec72ed9a8533f 100644 (file)
--- a/drivers/media/usb/stkwebcam/stk-webcam.c
+++ b/drivers/media/usb/stkwebcam/stk-webcam.c
@@ -604,11 +604,7 @@ static void stk_free_buffers(struct stk_camera *dev)
 static int v4l_stk_open(struct file *fp)
 {
        static int first_init = 1; /* webcam LED management */
-       struct stk_camera *dev;
-       struct video_device *vdev;
-
-       vdev = video_devdata(fp);
-       dev = vdev_to_camera(vdev);
+       struct stk_camera *dev = video_drvdata(fp);
 
        if (dev == NULL || !is_present(dev))
                return -ENXIO;
@@ -618,7 +614,6 @@ static int v4l_stk_open(struct file *fp)
        else
                first_init = 0;
 
-       fp->private_data = dev;
        usb_autopm_get_interface(dev->interface);
 
        return 0;
@@ -626,7 +621,7 @@ static int v4l_stk_open(struct file *fp)
 
 static int v4l_stk_release(struct file *fp)
 {
-       struct stk_camera *dev = fp->private_data;
+       struct stk_camera *dev = video_drvdata(fp);
 
        if (dev->owner == fp) {
                stk_stop_stream(dev);
@@ -649,7 +644,7 @@ static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
        int ret;
        unsigned long flags;
        struct stk_sio_buffer *sbuf;
-       struct stk_camera *dev = fp->private_data;
+       struct stk_camera *dev = video_drvdata(fp);
 
        if (!is_present(dev))
                return -EIO;
@@ -705,7 +700,7 @@ static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
 
 static unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
 {
-       struct stk_camera *dev = fp->private_data;
+       struct stk_camera *dev = video_drvdata(fp);
 
        poll_wait(fp, &dev->wait_frame, wait);
 
@@ -741,7 +736,7 @@ static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
        unsigned int i;
        int ret;
        unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-       struct stk_camera *dev = fp->private_data;
+       struct stk_camera *dev = video_drvdata(fp);
        struct stk_sio_buffer *sbuf = NULL;
 
        if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
@@ -879,7 +874,7 @@ static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
                void *priv, struct v4l2_format *f)
 {
        struct v4l2_pix_format *pix_format = &f->fmt.pix;
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        int i;
 
        for (i = 0; i < ARRAY_SIZE(stk_sizes) &&
@@ -984,7 +979,7 @@ static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
                void *priv, struct v4l2_format *fmtd)
 {
        int ret;
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
 
        if (dev == NULL)
                return -ENODEV;
@@ -1011,7 +1006,7 @@ static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
 static int stk_vidioc_reqbufs(struct file *filp,
                void *priv, struct v4l2_requestbuffers *rb)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
 
        if (dev == NULL)
                return -ENODEV;
@@ -1037,7 +1032,7 @@ static int stk_vidioc_reqbufs(struct file *filp,
 static int stk_vidioc_querybuf(struct file *filp,
                void *priv, struct v4l2_buffer *buf)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        struct stk_sio_buffer *sbuf;
 
        if (buf->index >= dev->n_sbufs)
@@ -1050,7 +1045,7 @@ static int stk_vidioc_querybuf(struct file *filp,
 static int stk_vidioc_qbuf(struct file *filp,
                void *priv, struct v4l2_buffer *buf)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        struct stk_sio_buffer *sbuf;
        unsigned long flags;
 
@@ -1074,7 +1069,7 @@ static int stk_vidioc_qbuf(struct file *filp,
 static int stk_vidioc_dqbuf(struct file *filp,
                void *priv, struct v4l2_buffer *buf)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        struct stk_sio_buffer *sbuf;
        unsigned long flags;
        int ret;
@@ -1107,7 +1102,7 @@ static int stk_vidioc_dqbuf(struct file *filp,
 static int stk_vidioc_streamon(struct file *filp,
                void *priv, enum v4l2_buf_type type)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        if (is_streaming(dev))
                return 0;
        if (dev->sio_bufs == NULL)
@@ -1119,7 +1114,7 @@ static int stk_vidioc_streamon(struct file *filp,
 static int stk_vidioc_streamoff(struct file *filp,
                void *priv, enum v4l2_buf_type type)
 {
-       struct stk_camera *dev = priv;
+       struct stk_camera *dev = video_drvdata(filp);
        unsigned long flags;
        int i;
        stk_stop_stream(dev);
@@ -1222,6 +1217,7 @@ static int stk_register_video_device(struct stk_camera *dev)
        dev->vdev = stk_v4l_data;
        dev->vdev.debug = debug;
        dev->vdev.v4l2_dev = &dev->v4l2_dev;
+       video_set_drvdata(&dev->vdev, dev);
        err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
        if (err)
                STK_ERROR("v4l registration failed\n");