From: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Most V4L2 drivers store the v4l2_fh pointer in file->private_data. The
pvrusb2 driver instead stores the pointer to the driver-specific
structure that embeds the v4l2_fh. Switch to storing the v4l2_fh pointer
itself to standardize behaviour across drivers. This also prepares for
future refactoring that depends on v4l2_fh being stored in private_data.
While at it, drop unneeded structure forward declarations.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mo...@ideasonboard.com>
---
drivers/media/usb/pvrusb2/pvrusb2-v4l2.c | 65 +++++++++++++++++---------------
1 file changed, 34 insertions(+), 31 deletions(-)
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index
ad38e12405419caad056af8866b14ea621f0c2a1..7dc7c90ebf621c594bf5236276c402462d694a0a
100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -21,8 +21,6 @@
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
-struct pvr2_v4l2_dev;
-struct pvr2_v4l2_fh;
struct pvr2_v4l2;
struct pvr2_v4l2_dev {
@@ -48,6 +46,11 @@ struct pvr2_v4l2_fh {
unsigned int input_cnt;
};
+static inline struct pvr2_v4l2_fh *to_pvr2_v4l2_fh(struct file *filp)
+{
+ return container_of(filp->private_data, struct pvr2_v4l2_fh, fh);
+}
+
struct pvr2_v4l2 {
struct pvr2_channel channel;
@@ -108,7 +111,7 @@ static struct v4l2_format pvr_format [] = {
*/
static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability
*cap)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
strscpy(cap->driver, "pvrusb2", sizeof(cap->driver));
@@ -123,7 +126,7 @@ static int pvr2_querycap(struct file *file, void *priv,
struct v4l2_capability *
static int pvr2_g_std(struct file *file, void *priv, v4l2_std_id *std)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int val = 0;
int ret;
@@ -136,7 +139,7 @@ static int pvr2_g_std(struct file *file, void *priv,
v4l2_std_id *std)
static int pvr2_s_std(struct file *file, void *priv, v4l2_std_id std)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int ret;
@@ -148,7 +151,7 @@ static int pvr2_s_std(struct file *file, void *priv,
v4l2_std_id std)
static int pvr2_querystd(struct file *file, void *priv, v4l2_std_id *std)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int val = 0;
int ret;
@@ -161,7 +164,7 @@ static int pvr2_querystd(struct file *file, void *priv,
v4l2_std_id *std)
static int pvr2_enum_input(struct file *file, void *priv, struct v4l2_input
*vi)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct pvr2_ctrl *cptr;
struct v4l2_input tmp;
@@ -209,7 +212,7 @@ static int pvr2_enum_input(struct file *file, void *priv,
struct v4l2_input *vi)
static int pvr2_g_input(struct file *file, void *priv, unsigned int *i)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
unsigned int idx;
struct pvr2_ctrl *cptr;
@@ -231,7 +234,7 @@ static int pvr2_g_input(struct file *file, void *priv,
unsigned int *i)
static int pvr2_s_input(struct file *file, void *priv, unsigned int inp)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int ret;
@@ -286,7 +289,7 @@ static int pvr2_s_audio(struct file *file, void *priv,
const struct v4l2_audio *
static int pvr2_g_tuner(struct file *file, void *priv, struct v4l2_tuner *vt)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
if (vt->index != 0)
@@ -298,7 +301,7 @@ static int pvr2_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *vt)
static int pvr2_s_tuner(struct file *file, void *priv, const struct v4l2_tuner
*vt)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int ret;
@@ -314,7 +317,7 @@ static int pvr2_s_tuner(struct file *file, void *priv,
const struct v4l2_tuner *
static int pvr2_s_frequency(struct file *file, void *priv, const struct
v4l2_frequency *vf)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
unsigned long fv;
struct v4l2_tuner vt;
@@ -349,7 +352,7 @@ static int pvr2_s_frequency(struct file *file, void *priv,
const struct v4l2_fre
static int pvr2_g_frequency(struct file *file, void *priv, struct
v4l2_frequency *vf)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int val = 0;
int cur_input;
@@ -391,7 +394,7 @@ static int pvr2_enum_fmt_vid_cap(struct file *file, void
*priv, struct v4l2_fmtd
static int pvr2_g_fmt_vid_cap(struct file *file, void *priv, struct
v4l2_format *vf)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int val;
@@ -411,7 +414,7 @@ static int pvr2_g_fmt_vid_cap(struct file *file, void
*priv, struct v4l2_format
static int pvr2_try_fmt_vid_cap(struct file *file, void *priv, struct
v4l2_format *vf)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int lmin, lmax, ldef;
struct pvr2_ctrl *hcp, *vcp;
@@ -449,7 +452,7 @@ static int pvr2_try_fmt_vid_cap(struct file *file, void
*priv, struct v4l2_forma
static int pvr2_s_fmt_vid_cap(struct file *file, void *priv, struct
v4l2_format *vf)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct pvr2_ctrl *hcp, *vcp;
int ret = pvr2_try_fmt_vid_cap(file, fh, vf);
@@ -466,7 +469,7 @@ static int pvr2_s_fmt_vid_cap(struct file *file, void
*priv, struct v4l2_format
static int pvr2_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct pvr2_v4l2_dev *pdi = fh->pdi;
int ret;
@@ -485,7 +488,7 @@ static int pvr2_streamon(struct file *file, void *priv,
enum v4l2_buf_type i)
static int pvr2_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
if (!fh->pdi->stream) {
@@ -500,7 +503,7 @@ static int pvr2_streamoff(struct file *file, void *priv,
enum v4l2_buf_type i)
static int pvr2_query_ext_ctrl(struct file *file, void *priv,
struct v4l2_query_ext_ctrl *vc)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct pvr2_ctrl *cptr;
int val;
@@ -561,7 +564,7 @@ static int pvr2_query_ext_ctrl(struct file *file, void
*priv,
static int pvr2_querymenu(struct file *file, void *priv, struct v4l2_querymenu
*vm)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
unsigned int cnt = 0;
int ret;
@@ -577,7 +580,7 @@ static int pvr2_querymenu(struct file *file, void *priv,
struct v4l2_querymenu *
static int pvr2_g_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctls)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct v4l2_ext_control *ctrl;
struct pvr2_ctrl *cptr;
@@ -612,7 +615,7 @@ static int pvr2_g_ext_ctrls(struct file *file, void *priv,
static int pvr2_s_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctls)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct v4l2_ext_control *ctrl;
unsigned int idx;
@@ -637,7 +640,7 @@ static int pvr2_s_ext_ctrls(struct file *file, void *priv,
static int pvr2_try_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctls)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct v4l2_ext_control *ctrl;
struct pvr2_ctrl *pctl;
@@ -659,7 +662,7 @@ static int pvr2_try_ext_ctrls(struct file *file, void *priv,
static int pvr2_g_pixelaspect(struct file *file, void *priv,
int type, struct v4l2_fract *f)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct v4l2_cropcap cap = { .type = type };
int ret;
@@ -675,7 +678,7 @@ static int pvr2_g_pixelaspect(struct file *file, void *priv,
static int pvr2_g_selection(struct file *file, void *priv,
struct v4l2_selection *sel)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
struct v4l2_cropcap cap;
int val = 0;
@@ -726,7 +729,7 @@ static int pvr2_g_selection(struct file *file, void *priv,
static int pvr2_s_selection(struct file *file, void *priv,
struct v4l2_selection *sel)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
int ret;
@@ -758,7 +761,7 @@ static int pvr2_s_selection(struct file *file, void *priv,
static int pvr2_log_status(struct file *file, void *priv)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
pvr2_hdw_trigger_module_log(hdw);
@@ -882,7 +885,7 @@ static void pvr2_v4l2_internal_check(struct pvr2_channel
*chp)
static int pvr2_v4l2_release(struct file *file)
{
- struct pvr2_v4l2_fh *fhp = file->private_data;
+ struct pvr2_v4l2_fh *fhp = to_pvr2_v4l2_fh(file);
struct pvr2_v4l2 *vp = fhp->pdi->v4lp;
struct pvr2_hdw *hdw = fhp->channel.mc_head->hdw;
@@ -1000,7 +1003,7 @@ static int pvr2_v4l2_open(struct file *file)
}
fhp->file = file;
- file->private_data = fhp;
+ file->private_data = &fhp->fh;
fhp->fw_mode_flag = pvr2_hdw_cpufw_get_enabled(hdw);
v4l2_fh_add(&fhp->fh);
@@ -1055,7 +1058,7 @@ static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
static ssize_t pvr2_v4l2_read(struct file *file,
char __user *buff, size_t count, loff_t *ppos)
{
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
int ret;
if (fh->fw_mode_flag) {
@@ -1117,7 +1120,7 @@ static ssize_t pvr2_v4l2_read(struct file *file,
static __poll_t pvr2_v4l2_poll(struct file *file, poll_table *wait)
{
__poll_t mask = 0;
- struct pvr2_v4l2_fh *fh = file->private_data;
+ struct pvr2_v4l2_fh *fh = to_pvr2_v4l2_fh(file);
int ret;
if (fh->fw_mode_flag) {
--
2.49.0
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