media: zoran: add stat_com buffer

Adds the allocation of the stat_com buffer which be used later.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/zoran/zoran.h

@@ -357,6 +357,8 @@ struct zoran {
 	wait_queue_head_t test_q;
 
 	dma_addr_t p_sc;
+	__le32 *stat_comb;
+	dma_addr_t p_scb;
 };
 
 static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev)

drivers/staging/media/zoran/zoran_card.c

@@ -951,6 +951,14 @@ static int zr36057_init(struct zoran *zr)
 	for (j = 0; j < BUZ_NUM_STAT_COM; j++)
 		zr->stat_com[j] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
 
+	zr->stat_comb = dma_alloc_coherent(&zr->pci_dev->dev,
+					   BUZ_NUM_STAT_COM * sizeof(u32) * 2,
+					   &zr->p_scb, GFP_KERNEL);
+	if (!zr->stat_comb) {
+		err = -ENOMEM;
+		goto exit_statcom;
+	}
+
 	/* Now add the template and register the device unit. */
 	*zr->video_dev = zoran_template;
 	zr->video_dev->v4l2_dev = &zr->v4l2_dev;
@@ -964,7 +972,7 @@ static int zr36057_init(struct zoran *zr)
 	zr->video_dev->vfl_dir = VFL_DIR_M2M;
 	err = video_register_device(zr->video_dev, VFL_TYPE_VIDEO, video_nr[zr->id]);
 	if (err < 0)
-		goto exit_statcom;
+		goto exit_statcomb;
 	video_set_drvdata(zr->video_dev, zr);
 
 	zoran_init_hardware(zr);
@@ -979,6 +987,8 @@ static int zr36057_init(struct zoran *zr)
 	zr->initialized = 1;
 	return 0;
 
+exit_statcomb:
+	dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32) * 2, zr->stat_comb, zr->p_scb);
 exit_statcom:
 	dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32), zr->stat_com, zr->p_sc);
 exit_video:
@@ -1010,6 +1020,7 @@ static void zoran_remove(struct pci_dev *pdev)
 	pci_free_irq(zr->pci_dev, 0, zr);
 	/* unmap and free memory */
 	dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32), zr->stat_com, zr->p_sc);
+	dma_free_coherent(&zr->pci_dev->dev, BUZ_NUM_STAT_COM * sizeof(u32) * 2, zr->stat_comb, zr->p_scb);
 	pci_release_regions(pdev);
 	pci_disable_device(zr->pci_dev);
 	video_unregister_device(zr->video_dev);