The v4l2_fh associated with an open file handle is now guaranteed
to be available in file->private_data, initialised by v4l2_fh_add().

Access the v4l2_fh, and from there the driver-specific structure,
from the file * in all ioctl handlers.

While at it remove the only left user of fh_to_channel() and remove
the macro completely.

Signed-off-by: Jacopo Mondi <jacopo.mo...@ideasonboard.com>
---
 drivers/media/platform/allegro-dvt/allegro-core.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c 
b/drivers/media/platform/allegro-dvt/allegro-core.c
index 
5e3b1f5d7206d84b8ccb9ea3b3f3f1fe75becf99..81c6afcf2d06f9e39015e49d355346238c5033d8
 100644
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -197,8 +197,6 @@ static const struct regmap_config allegro_sram_config = {
        .cache_type = REGCACHE_NONE,
 };
 
-#define fh_to_channel(__fh) container_of(__fh, struct allegro_channel, fh)
-
 struct allegro_channel {
        struct allegro_dev *dev;
        struct v4l2_fh fh;
@@ -3284,7 +3282,7 @@ static int allegro_enum_fmt_vid(struct file *file, void 
*fh,
 static int allegro_g_fmt_vid_cap(struct file *file, void *fh,
                                 struct v4l2_format *f)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
 
        f->fmt.pix.field = V4L2_FIELD_NONE;
        f->fmt.pix.width = channel->width;
@@ -3326,7 +3324,7 @@ static int allegro_try_fmt_vid_cap(struct file *file, 
void *fh,
 static int allegro_s_fmt_vid_cap(struct file *file, void *fh,
                                 struct v4l2_format *f)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        struct vb2_queue *vq;
        int err;
 
@@ -3350,7 +3348,7 @@ static int allegro_s_fmt_vid_cap(struct file *file, void 
*fh,
 static int allegro_g_fmt_vid_out(struct file *file, void *fh,
                                 struct v4l2_format *f)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
 
        f->fmt.pix.field = V4L2_FIELD_NONE;
 
@@ -3397,7 +3395,7 @@ static int allegro_try_fmt_vid_out(struct file *file, 
void *fh,
 static int allegro_s_fmt_vid_out(struct file *file, void *fh,
                                 struct v4l2_format *f)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        int err;
 
        err = allegro_try_fmt_vid_out(file, fh, f);
@@ -3438,7 +3436,7 @@ static int allegro_channel_cmd_start(struct 
allegro_channel *channel)
 static int allegro_encoder_cmd(struct file *file, void *fh,
                               struct v4l2_encoder_cmd *cmd)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        int err;
 
        err = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
@@ -3488,7 +3486,7 @@ static int allegro_ioctl_streamon(struct file *file, void 
*priv,
                                  enum v4l2_buf_type type)
 {
        struct v4l2_fh *fh = file_to_v4l2_fh(file);
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        int err;
 
        if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
@@ -3503,7 +3501,7 @@ static int allegro_ioctl_streamon(struct file *file, void 
*priv,
 static int allegro_g_parm(struct file *file, void *fh,
                          struct v4l2_streamparm *a)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        struct v4l2_fract *timeperframe;
 
        if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
@@ -3520,7 +3518,7 @@ static int allegro_g_parm(struct file *file, void *fh,
 static int allegro_s_parm(struct file *file, void *fh,
                          struct v4l2_streamparm *a)
 {
-       struct allegro_channel *channel = fh_to_channel(fh);
+       struct allegro_channel *channel = file_to_channel(file);
        struct v4l2_fract *timeperframe;
        int div;
 

-- 
2.49.0



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