gspca_buffer
struct gspca_buffer *buf = to_gspca_buffer(vb);
struct gspca_buffer *buf, *node;
q->buf_struct_size = sizeof(struct gspca_buffer);
struct gspca_buffer *buf;
static inline struct gspca_buffer *to_gspca_buffer(struct vb2_buffer *vb2)
return container_of(vb2, struct gspca_buffer, vb.vb2_buf);