diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-core.c')
-rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index c0175ea7e7ad..14f83cecfa92 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -210,7 +210,7 @@ static int __vb2_buf_mem_alloc(struct vb2_buffer *vb) mem_priv = call_ptr_memop(vb, alloc, q->alloc_devs[plane] ? : q->dev, q->dma_attrs, size, dma_dir, q->gfp_flags); - if (IS_ERR(mem_priv)) { + if (IS_ERR_OR_NULL(mem_priv)) { if (mem_priv) ret = PTR_ERR(mem_priv); goto free; @@ -956,9 +956,9 @@ void vb2_discard_done(struct vb2_queue *q) EXPORT_SYMBOL_GPL(vb2_discard_done); /** - * __qbuf_mmap() - handle qbuf of an MMAP buffer + * __prepare_mmap() - prepare an MMAP buffer */ -static int __qbuf_mmap(struct vb2_buffer *vb, const void *pb) +static int __prepare_mmap(struct vb2_buffer *vb, const void *pb) { int ret = 0; @@ -969,9 +969,9 @@ static int __qbuf_mmap(struct vb2_buffer *vb, const void *pb) } /** - * __qbuf_userptr() - handle qbuf of a USERPTR buffer + * __prepare_userptr() - prepare a USERPTR buffer */ -static int __qbuf_userptr(struct vb2_buffer *vb, const void *pb) +static int __prepare_userptr(struct vb2_buffer *vb, const void *pb) { struct vb2_plane planes[VB2_MAX_PLANES]; struct vb2_queue *q = vb->vb2_queue; @@ -1087,9 +1087,9 @@ err: } /** - * __qbuf_dmabuf() - handle qbuf of a DMABUF buffer + * __prepare_dmabuf() - prepare a DMABUF buffer */ -static int __qbuf_dmabuf(struct vb2_buffer *vb, const void *pb) +static int __prepare_dmabuf(struct vb2_buffer *vb, const void *pb) { struct vb2_plane planes[VB2_MAX_PLANES]; struct vb2_queue *q = vb->vb2_queue; @@ -1227,23 +1227,19 @@ err: static void __enqueue_in_driver(struct vb2_buffer *vb) { struct vb2_queue *q = vb->vb2_queue; - unsigned int plane; vb->state = VB2_BUF_STATE_ACTIVE; atomic_inc(&q->owned_by_drv_count); trace_vb2_buf_queue(q, vb); - /* sync buffers */ - for (plane = 0; plane < vb->num_planes; ++plane) - call_void_memop(vb, prepare, vb->planes[plane].mem_priv); - call_void_vb_qop(vb, buf_queue, vb); } static int __buf_prepare(struct vb2_buffer *vb, const void *pb) { struct vb2_queue *q = vb->vb2_queue; + unsigned int plane; int ret; if (q->error) { @@ -1255,24 +1251,32 @@ static int __buf_prepare(struct vb2_buffer *vb, const void *pb) switch (q->memory) { case VB2_MEMORY_MMAP: - ret = __qbuf_mmap(vb, pb); + ret = __prepare_mmap(vb, pb); break; case VB2_MEMORY_USERPTR: - ret = __qbuf_userptr(vb, pb); + ret = __prepare_userptr(vb, pb); break; case VB2_MEMORY_DMABUF: - ret = __qbuf_dmabuf(vb, pb); + ret = __prepare_dmabuf(vb, pb); break; default: WARN(1, "Invalid queue type\n"); ret = -EINVAL; } - if (ret) + if (ret) { dprintk(1, "buffer preparation failed: %d\n", ret); - vb->state = ret ? VB2_BUF_STATE_DEQUEUED : VB2_BUF_STATE_PREPARED; + vb->state = VB2_BUF_STATE_DEQUEUED; + return ret; + } - return ret; + /* sync buffers */ + for (plane = 0; plane < vb->num_planes; ++plane) + call_void_memop(vb, prepare, vb->planes[plane].mem_priv); + + vb->state = VB2_BUF_STATE_PREPARED; + + return 0; } int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb) |