[media] cx88: drop cx88_free_buffer

Remove this function. This makes all vb2 queues behave the same, which
simplifies comparing the various vb2 queue op implementations.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/pci/cx88/cx88-blackbird.c

@@ -667,7 +667,7 @@ static void buffer_finish(struct vb2_buffer *vb)
 	struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 
-	cx88_free_buffer(vb->vb2_queue, buf);
+	btcx_riscmem_free(dev->pci, &buf->risc);
 
 	dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }

drivers/media/pci/cx88/cx88-core.c

@@ -198,12 +198,6 @@ int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 	return 0;
 }
 
-void
-cx88_free_buffer(struct vb2_queue *q, struct cx88_buffer *buf)
-{
-	btcx_riscmem_free(to_pci_dev(q->drv_priv), &buf->risc);
-}
-
 /* ------------------------------------------------------------------ */
 /* our SRAM memory layout                                             */
 
@@ -1072,7 +1066,6 @@ EXPORT_SYMBOL(cx88_shutdown);
 
 EXPORT_SYMBOL(cx88_risc_buffer);
 EXPORT_SYMBOL(cx88_risc_databuffer);
-EXPORT_SYMBOL(cx88_free_buffer);
 
 EXPORT_SYMBOL(cx88_sram_channels);
 EXPORT_SYMBOL(cx88_sram_channel_setup);

drivers/media/pci/cx88/cx88-dvb.c

@@ -110,7 +110,7 @@ static void buffer_finish(struct vb2_buffer *vb)
 	struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 
-	cx88_free_buffer(vb->vb2_queue, buf);
+	btcx_riscmem_free(dev->pci, &buf->risc);
 
 	dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }

drivers/media/pci/cx88/cx88-mpeg.c

@@ -238,8 +238,12 @@ int cx8802_buf_prepare(struct vb2_queue *q, struct cx8802_dev *dev,
 	if (!rc)
 		return -EIO;
 
-	cx88_risc_databuffer(dev->pci, &buf->risc, sgt->sgl,
+	rc = cx88_risc_databuffer(dev->pci, &buf->risc, sgt->sgl,
 			     dev->ts_packet_size, dev->ts_packet_count, 0);
+	if (rc) {
+		btcx_riscmem_free(dev->pci, &buf->risc);
+		return rc;
+	}
 	return 0;
 }
 

drivers/media/pci/cx88/cx88-vbi.c

@@ -147,7 +147,7 @@ static void buffer_finish(struct vb2_buffer *vb)
 	struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 
-	cx88_free_buffer(vb->vb2_queue, buf);
+	btcx_riscmem_free(dev->pci, &buf->risc);
 
 	dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }

drivers/media/pci/cx88/cx88-video.c

@@ -506,7 +506,7 @@ static void buffer_finish(struct vb2_buffer *vb)
 	struct cx88_buffer *buf = container_of(vb, struct cx88_buffer, vb);
 	struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 
-	cx88_free_buffer(vb->vb2_queue, buf);
+	btcx_riscmem_free(dev->pci, &buf->risc);
 
 	dma_unmap_sg(&dev->pci->dev, sgt->sgl, sgt->nents, DMA_FROM_DEVICE);
 }

drivers/media/pci/cx88/cx88.h

@@ -624,8 +624,6 @@ extern int
 cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 		     struct scatterlist *sglist, unsigned int bpl,
 		     unsigned int lines, unsigned int lpi);
-extern void
-cx88_free_buffer(struct vb2_queue *q, struct cx88_buffer *buf);
 
 extern void cx88_risc_disasm(struct cx88_core *core,
 			     struct btcx_riscmem *risc);