[PATCH 02/65] media: imagination: Store v4l2_fh pointer in file->private_data

[Jacopo Mondi]

From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

Most V4L2 drivers store the v4l2_fh pointer in file->private_data. The
e5010-jpeg-enc 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.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi at ideasonboard.com>
---
 drivers/media/platform/imagination/e5010-jpeg-enc.c | 18 +++++++++---------
 drivers/media/platform/imagination/e5010-jpeg-enc.h |  5 +++++
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/media/platform/imagination/e5010-jpeg-enc.c b/drivers/media/platform/imagination/e5010-jpeg-enc.c
index ae868d9f73e13fdac747ef603e08ea13cd66d3a6..295461325862fb2bcac755cf815955955b37e6f0 100644
--- a/drivers/media/platform/imagination/e5010-jpeg-enc.c
+++ b/drivers/media/platform/imagination/e5010-jpeg-enc.c
@@ -253,7 +253,7 @@ static int e5010_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f)
 {
 	int i, index = 0;
 	struct e5010_fmt *fmt = NULL;
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 
 	if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
 		v4l2_err(&ctx->e5010->v4l2_dev, "ENUMFMT with Invalid type: %d\n", f->type);
@@ -279,7 +279,7 @@ static int e5010_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f)
 
 static int e5010_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 	struct e5010_q_data *queue;
 	int i;
 	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
@@ -380,14 +380,14 @@ static int e5010_jpeg_try_fmt(struct v4l2_format *f, struct e5010_context *ctx)
 
 static int e5010_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 
 	return e5010_jpeg_try_fmt(f, ctx);
 }
 
 static int e5010_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 	struct vb2_queue *vq;
 	int ret = 0, i = 0;
 	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
@@ -462,7 +462,7 @@ static int e5010_enum_framesizes(struct file *file, void *priv, struct v4l2_frms
 
 static int e5010_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 	struct e5010_q_data *queue;
 
 	if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
@@ -490,7 +490,7 @@ static int e5010_g_selection(struct file *file, void *fh, struct v4l2_selection
 
 static int e5010_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 	struct e5010_q_data *queue;
 	struct vb2_queue *vq;
 	struct v4l2_rect base_rect;
@@ -742,7 +742,7 @@ static int e5010_open(struct file *file)
 	}
 
 	v4l2_fh_init(&ctx->fh, vdev);
-	file->private_data = ctx;
+	file->private_data = &ctx->fh;
 	v4l2_fh_add(&ctx->fh);
 
 	ctx->e5010 = e5010;
@@ -781,7 +781,7 @@ static int e5010_open(struct file *file)
 static int e5010_release(struct file *file)
 {
 	struct e5010_dev *e5010 = video_drvdata(file);
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 
 	dprintk(e5010, 1, "Releasing instance: 0x%p, m2m_ctx: 0x%p\n", ctx, ctx->fh.m2m_ctx);
 	mutex_lock(&e5010->mutex);
@@ -1262,7 +1262,7 @@ static void e5010_buf_queue(struct vb2_buffer *vb)
 static int e5010_encoder_cmd(struct file *file, void *priv,
 			     struct v4l2_encoder_cmd *cmd)
 {
-	struct e5010_context *ctx = file->private_data;
+	struct e5010_context *ctx = to_e5010_context(file);
 	int ret;
 	struct vb2_queue *cap_vq;
 
diff --git a/drivers/media/platform/imagination/e5010-jpeg-enc.h b/drivers/media/platform/imagination/e5010-jpeg-enc.h
index 71f49ead68980c83fd81b19fd63d9abd47abef64..eefaf60489d3fba518acd12709f2e4831686620b 100644
--- a/drivers/media/platform/imagination/e5010-jpeg-enc.h
+++ b/drivers/media/platform/imagination/e5010-jpeg-enc.h
@@ -120,6 +120,11 @@ struct e5010_context {
 	u8				chroma_qp[QP_TABLE_SIZE];
 };
 
+static inline struct e5010_context *to_e5010_context(struct file *filp)
+{
+	return container_of(filp->private_data, struct e5010_context, fh);
+}
+
 /*
  * Buffer structure
  * Contains info for all buffers

-- 
2.49.0