[PATCH 1/2] staging: media: omap4iss: redefine to_iss_buffer()

[Himadri Pandya <himadri18.07@gmail.com>]

Currently macro to_iss_buffer converts vb2_v4l2_buffer into iss_buffer.
But the application needs the conversion from vb2_buffer to iss_bufffer.
So they need to convert vb2_buffer into vb2_v4l2_buffer first and then
vb2_v4l2_buffer into iss_buffer. Redefining to_iss_buffer to convert
from vb2_buffer into iss_buffer directly helps the situation.

Signed-off-by: Himadri Pandya <himadri18.07@gmail.com>
---
 drivers/staging/media/omap4iss/iss_video.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h
index f22489edb562..3722ac8ba2fa 100644
--- a/drivers/staging/media/omap4iss/iss_video.h
+++ b/drivers/staging/media/omap4iss/iss_video.h
@@ -118,7 +118,12 @@ struct iss_buffer {
 	dma_addr_t iss_addr;
 };
 
-#define to_iss_buffer(buf)	container_of(buf, struct iss_buffer, vb)
+static inline struct iss_buffer *to_iss_buffer(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = container_of(vb, struct vb2_v4l2_buffer, vb2_buf);
+
+	return container_of(vbuf, struct iss_buffer, vb);
+}
 
 enum iss_video_dmaqueue_flags {
 	/* Set if DMA queue becomes empty when ISS_PIPELINE_STREAM_CONTINUOUS */
-- 
2.17.1