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 now unused fh_to_ctx() macro.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
---
 drivers/media/platform/st/sti/delta/delta-v4l2.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/st/sti/delta/delta-v4l2.c b/drivers/media/platform/st/sti/delta/delta-v4l2.c
index adff43271b2dc059abbbf82d90cd13482f6bca30..6c1a53c771f746813a6062cb3ffc139250ff7146 100644
--- a/drivers/media/platform/st/sti/delta/delta-v4l2.c
+++ b/drivers/media/platform/st/sti/delta/delta-v4l2.c
@@ -24,8 +24,6 @@
 
 #define DELTA_PREFIX "[---:----]"
 
-#define to_ctx(__fh) container_of(__fh, struct delta_ctx, fh)
-
 static inline struct delta_ctx *file_to_ctx(struct file *filp)
 {
 	return container_of(file_to_v4l2_fh(filp), struct delta_ctx, fh);
@@ -727,7 +725,7 @@ static int delta_s_fmt_frame(struct file *file, void *fh, struct v4l2_format *f)
 static int delta_g_selection(struct file *file, void *fh,
 			     struct v4l2_selection *s)
 {
-	struct delta_ctx *ctx = to_ctx(fh);
+	struct delta_ctx *ctx = file_to_ctx(file);
 	struct delta_frameinfo *frameinfo = &ctx->frameinfo;
 	struct v4l2_rect crop;
 
@@ -809,7 +807,7 @@ static int delta_try_decoder_cmd(struct file *file, void *fh,
 	return 0;
 }
 
-static int delta_decoder_stop_cmd(struct delta_ctx *ctx, void *fh)
+static int delta_decoder_stop_cmd(struct delta_ctx *ctx)
 {
 	const struct delta_dec *dec = ctx->dec;
 	struct delta_dev *delta = ctx->dev;
@@ -872,14 +870,14 @@ static int delta_decoder_stop_cmd(struct delta_ctx *ctx, void *fh)
 static int delta_decoder_cmd(struct file *file, void *fh,
 			     struct v4l2_decoder_cmd *cmd)
 {
-	struct delta_ctx *ctx = to_ctx(fh);
+	struct delta_ctx *ctx = file_to_ctx(file);
 	int ret = 0;
 
 	ret = delta_try_decoder_cmd(file, fh, cmd);
 	if (ret)
 		return ret;
 
-	return delta_decoder_stop_cmd(ctx, fh);
+	return delta_decoder_stop_cmd(ctx);
 }
 
 static int delta_subscribe_event(struct v4l2_fh *fh,

-- 
2.49.0