From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
But using struct v4l2_fh both the prio handling and the linked list
implementation in pvrusb2 can be removed since both are now done in
the v4l2 core if you use struct v4l2_fh.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/usb/pvrusb2/pvrusb2-v4l2.c | 81 +++++---------------------------
1 file changed, 13 insertions(+), 68 deletions(-)
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index 91c1700..802b43b 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -32,6 +32,7 @@
#include <linux/module.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
@@ -50,14 +51,11 @@ struct pvr2_v4l2_dev {
};
struct pvr2_v4l2_fh {
+ struct v4l2_fh fh;
struct pvr2_channel channel;
struct pvr2_v4l2_dev *pdi;
- enum v4l2_priority prio;
struct pvr2_ioread *rhp;
struct file *file;
- struct pvr2_v4l2 *vhead;
- struct pvr2_v4l2_fh *vnext;
- struct pvr2_v4l2_fh *vprev;
wait_queue_head_t wait_data;
int fw_mode_flag;
/* Map contiguous ordinal value to input id */
@@ -67,10 +65,6 @@ struct pvr2_v4l2_fh {
struct pvr2_v4l2 {
struct pvr2_channel channel;
- struct pvr2_v4l2_fh *vfirst;
- struct pvr2_v4l2_fh *vlast;
-
- struct v4l2_prio_state prio;
/* streams - Note that these must be separately, individually,
* allocated pointers. This is because the v4l core is going to
@@ -169,23 +163,6 @@ static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *
return 0;
}
-static int pvr2_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
-{
- struct pvr2_v4l2_fh *fh = file->private_data;
- struct pvr2_v4l2 *vp = fh->vhead;
-
- *p = v4l2_prio_max(&vp->prio);
- return 0;
-}
-
-static int pvr2_s_priority(struct file *file, void *priv, enum v4l2_priority prio)
-{
- struct pvr2_v4l2_fh *fh = file->private_data;
- struct pvr2_v4l2 *vp = fh->vhead;
-
- return v4l2_prio_change(&vp->prio, &fh->prio, prio);
-}
-
static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std)
{
struct pvr2_v4l2_fh *fh = file->private_data;
@@ -805,8 +782,6 @@ static int pvr2_log_status(struct file *file, void *priv)
static const struct v4l2_ioctl_ops pvr2_ioctl_ops = {
.vidioc_querycap = pvr2_querycap,
- .vidioc_g_priority = pvr2_g_priority,
- .vidioc_s_priority = pvr2_s_priority,
.vidioc_s_audio = pvr2_s_audio,
.vidioc_g_audio = pvr2_g_audio,
.vidioc_enumaudio = pvr2_enumaudio,
@@ -911,7 +886,9 @@ static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
if (!vp->channel.mc_head->disconnect_flag) return;
pvr2_v4l2_dev_disassociate_parent(vp->dev_video);
pvr2_v4l2_dev_disassociate_parent(vp->dev_radio);
- if (vp->vfirst) return;
+ if (!list_empty(&vp->dev_video->devbase.fh_list) ||
+ !list_empty(&vp->dev_radio->devbase.fh_list))
+ return;
pvr2_v4l2_destroy_no_lock(vp);
}
@@ -921,7 +898,6 @@ static long pvr2_v4l2_ioctl(struct file *file,
{
struct pvr2_v4l2_fh *fh = file->private_data;
- struct pvr2_v4l2 *vp = fh->vhead;
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
long ret = -EINVAL;
@@ -934,18 +910,6 @@ static long pvr2_v4l2_ioctl(struct file *file,
return -EFAULT;
}
- /* check priority */
- switch (cmd) {
- case VIDIOC_S_CTRL:
- case VIDIOC_S_STD:
- case VIDIOC_S_INPUT:
- case VIDIOC_S_TUNER:
- case VIDIOC_S_FREQUENCY:
- ret = v4l2_prio_check(&vp->prio, fh->prio);
- if (ret)
- return ret;
- }
-
ret = video_ioctl2(file, cmd, arg);
pvr2_hdw_commit_ctl(hdw);
@@ -970,7 +934,7 @@ static long pvr2_v4l2_ioctl(struct file *file,
static int pvr2_v4l2_release(struct file *file)
{
struct pvr2_v4l2_fh *fhp = file->private_data;
- struct pvr2_v4l2 *vp = fhp->vhead;
+ struct pvr2_v4l2 *vp = fhp->pdi->v4lp;
struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;
pvr2_trace(PVR2_TRACE_OPEN_CLOSE,"pvr2_v4l2_release");
@@ -984,22 +948,10 @@ static int pvr2_v4l2_release(struct file *file)
fhp->rhp = NULL;
}
- v4l2_prio_close(&vp->prio, fhp->prio);
+ v4l2_fh_del(&fhp->fh);
+ v4l2_fh_exit(&fhp->fh);
file->private_data = NULL;
- if (fhp->vnext) {
- fhp->vnext->vprev = fhp->vprev;
- } else {
- vp->vlast = fhp->vprev;
- }
- if (fhp->vprev) {
- fhp->vprev->vnext = fhp->vnext;
- } else {
- vp->vfirst = fhp->vnext;
- }
- fhp->vnext = NULL;
- fhp->vprev = NULL;
- fhp->vhead = NULL;
pvr2_channel_done(&fhp->channel);
pvr2_trace(PVR2_TRACE_STRUCT,
"Destroying pvr_v4l2_fh id=%p",fhp);
@@ -1008,7 +960,9 @@ static int pvr2_v4l2_release(struct file *file)
fhp->input_map = NULL;
}
kfree(fhp);
- if (vp->channel.mc_head->disconnect_flag && !vp->vfirst) {
+ if (vp->channel.mc_head->disconnect_flag &&
+ list_empty(&vp->dev_video->devbase.fh_list) &&
+ list_empty(&vp->dev_radio->devbase.fh_list)) {
pvr2_v4l2_destroy_no_lock(vp);
}
return 0;
@@ -1043,6 +997,7 @@ static int pvr2_v4l2_open(struct file *file)
return -ENOMEM;
}
+ v4l2_fh_init(&fhp->fh, &dip->devbase);
init_waitqueue_head(&fhp->wait_data);
fhp->pdi = dip;
@@ -1093,21 +1048,11 @@ static int pvr2_v4l2_open(struct file *file)
fhp->input_map[input_cnt++] = idx;
}
- fhp->vnext = NULL;
- fhp->vprev = vp->vlast;
- if (vp->vlast) {
- vp->vlast->vnext = fhp;
- } else {
- vp->vfirst = fhp;
- }
- vp->vlast = fhp;
- fhp->vhead = vp;
-
fhp->file = file;
file->private_data = fhp;
- v4l2_prio_open(&vp->prio, &fhp->prio);
fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
+ v4l2_fh_add(&fhp->fh);
return 0;
}
--
2.1.4
--
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