--- zzzz-none-000/linux-3.10.107/drivers/media/pci/ngene/ngene-core.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/media/pci/ngene/ngene-core.c	2021-02-04 17:41:59.000000000 +0000
@@ -57,15 +57,13 @@
 
 #define dprintk	if (debug) printk
 
-#define ngwriteb(dat, adr)         writeb((dat), (char *)(dev->iomem + (adr)))
-#define ngwritel(dat, adr)         writel((dat), (char *)(dev->iomem + (adr)))
-#define ngwriteb(dat, adr)         writeb((dat), (char *)(dev->iomem + (adr)))
+#define ngwriteb(dat, adr)         writeb((dat), dev->iomem + (adr))
+#define ngwritel(dat, adr)         writel((dat), dev->iomem + (adr))
+#define ngwriteb(dat, adr)         writeb((dat), dev->iomem + (adr))
 #define ngreadl(adr)               readl(dev->iomem + (adr))
 #define ngreadb(adr)               readb(dev->iomem + (adr))
-#define ngcpyto(adr, src, count)   memcpy_toio((char *) \
-				   (dev->iomem + (adr)), (src), (count))
-#define ngcpyfrom(dst, adr, count) memcpy_fromio((dst), (char *) \
-				   (dev->iomem + (adr)), (count))
+#define ngcpyto(adr, src, count)   memcpy_toio(dev->iomem + (adr), (src), (count))
+#define ngcpyfrom(dst, adr, count) memcpy_fromio((dst), dev->iomem + (adr), (count))
 
 /****************************************************************************/
 /* nGene interrupt handler **************************************************/
@@ -910,7 +908,6 @@
 {
 	dma_addr_t tmp;
 	u32 i, j;
-	int status = 0;
 	u32 SCListMemSize = pRingBuffer->NumBuffers
 		* ((Buffer2Length != 0) ? (NUM_SCATTER_GATHER_ENTRIES * 2) :
 		    NUM_SCATTER_GATHER_ENTRIES)
@@ -1010,14 +1007,12 @@
 
 	}
 
-	return status;
+	return 0;
 }
 
 static int FillTSIdleBuffer(struct SRingBufferDescriptor *pIdleBuffer,
 			    struct SRingBufferDescriptor *pRingBuffer)
 {
-	int status = 0;
-
 	/* Copy pointer to scatter gather list in TSRingbuffer
 	   structure for buffer 2
 	   Load number of buffer
@@ -1038,7 +1033,7 @@
 			pIdleBuffer->Head->ngeneBuffer.Number_of_entries_1;
 		Cur = Cur->Next;
 	}
-	return status;
+	return 0;
 }
 
 static u32 RingBufferSizes[MAX_STREAM] = {
@@ -1078,12 +1073,11 @@
 	dev->ngenetohost = dev->FWInterfaceBuffer + 256;
 	dev->EventBuffer = dev->FWInterfaceBuffer + 512;
 
-	dev->OverflowBuffer = pci_alloc_consistent(dev->pci_dev,
-						   OVERFLOW_BUFFER_SIZE,
-						   &dev->PAOverflowBuffer);
+	dev->OverflowBuffer = pci_zalloc_consistent(dev->pci_dev,
+						    OVERFLOW_BUFFER_SIZE,
+						    &dev->PAOverflowBuffer);
 	if (!dev->OverflowBuffer)
 		return -ENOMEM;
-	memset(dev->OverflowBuffer, 0, OVERFLOW_BUFFER_SIZE);
 
 	for (i = STREAM_VIDEOIN1; i < MAX_STREAM; i++) {
 		int type = dev->card_info->io_type[i];
@@ -1532,10 +1526,12 @@
 	if (chan->fe2) {
 		if (dvb_register_frontend(adapter, chan->fe2) < 0)
 			goto err;
-		chan->fe2->tuner_priv = chan->fe->tuner_priv;
-		memcpy(&chan->fe2->ops.tuner_ops,
-		       &chan->fe->ops.tuner_ops,
-		       sizeof(struct dvb_tuner_ops));
+		if (chan->fe) {
+			chan->fe2->tuner_priv = chan->fe->tuner_priv;
+			memcpy(&chan->fe2->ops.tuner_ops,
+			       &chan->fe->ops.tuner_ops,
+			       sizeof(struct dvb_tuner_ops));
+		}
 	}
 
 	if (chan->has_demux) {
@@ -1596,7 +1592,7 @@
 
 	dvb_ca_en50221_release(ci->en);
 	kfree(ci->en);
-	ci->en = 0;
+	ci->en = NULL;
 }
 
 /***********************************/
@@ -1622,7 +1618,7 @@
 
 void ngene_shutdown(struct pci_dev *pdev)
 {
-	struct ngene *dev = (struct ngene *)pci_get_drvdata(pdev);
+	struct ngene *dev = pci_get_drvdata(pdev);
 
 	if (!dev || !shutdown_workaround)
 		return;
@@ -1648,7 +1644,6 @@
 		cxd_detach(dev);
 	ngene_stop(dev);
 	ngene_release_buffers(dev);
-	pci_set_drvdata(pdev, NULL);
 	pci_disable_device(pdev);
 }
 
@@ -1702,6 +1697,5 @@
 	ngene_release_buffers(dev);
 fail0:
 	pci_disable_device(pci_dev);
-	pci_set_drvdata(pci_dev, NULL);
 	return stat;
 }