Fixes for newer kernels
Includes:
https://github.com/nvidia-holoscan/ntv2/commit/70f44cea11560316714ab382bf6799d09ae51b74

diff --git a/ajadriver/linux/ntv2dma.c b/ajadriver/linux/ntv2dma.c
index 8d0aa23..83a73b4 100644
--- a/ajadriver/linux/ntv2dma.c
+++ b/ajadriver/linux/ntv2dma.c
@@ -473,9 +473,10 @@ int dmaInit(ULWord deviceNumber)
 			for (iDes = 0; iDes < pDmaEngine->numDescriptorPages; iDes++)
 			{
 				pDmaEngine->pDescriptorVirtual[iDes] =
-					pci_alloc_consistent(pNTV2Params->pci_dev,
+					dma_alloc_coherent(&pNTV2Params->pci_dev->dev,
 										 PAGE_SIZE,
-										 &pDmaEngine->descriptorPhysical[iDes]);
+										 &pDmaEngine->descriptorPhysical[iDes],
+										 GFP_ATOMIC);
 				if ((pDmaEngine->pDescriptorVirtual[iDes] == NULL) ||
 					(pDmaEngine->descriptorPhysical[iDes] == 0))
 				{
@@ -556,7 +557,7 @@ static void dmaFreeEngine(PDMA_ENGINE pDmaEngine)
 		if ((pDmaEngine->pDescriptorVirtual[iDes] != NULL) &&
 			(pDmaEngine->descriptorPhysical[iDes] != 0))
 		{
-			pci_free_consistent(pNTV2Params->pci_dev,
+			dma_free_coherent(&pNTV2Params->pci_dev->dev,
 								PAGE_SIZE,
 								pDmaEngine->pDescriptorVirtual[iDes],
 								pDmaEngine->descriptorPhysical[iDes]);
@@ -914,7 +915,7 @@ int dmaTransfer(PDMA_PARAMS pDmaParams)
 			pDmaContext->dmaC2H = pDmaParams->toHost;
 		}
 		dmaC2H = pDmaContext->dmaC2H;
-		direction = dmaC2H? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE;
+		direction = dmaC2H? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 
 		// do nothing by default
 		pDmaContext->pVideoPageBuffer = NULL;
@@ -2282,7 +2283,7 @@ int dmaPageRootAdd(ULWord deviceNumber, PDMA_PAGE_ROOT pRoot,
 	}
 	
 	// lock buffer 
-	ret = dmaPageLock(deviceNumber, pBuffer, pAddress, size, PCI_DMA_BIDIRECTIONAL);
+	ret = dmaPageLock(deviceNumber, pBuffer, pAddress, size, DMA_BIDIRECTIONAL);
 	if (ret < 0)
 	{
 		kfree(pBuffer);
@@ -2655,7 +2656,7 @@ static int dmaPageLock(ULWord deviceNumber, PDMA_PAGE_BUFFER pBuffer,
 	}
 
 	// determine if buffer will be written
-	write = (direction == PCI_DMA_BIDIRECTIONAL) || (direction == PCI_DMA_FROMDEVICE);
+	write = (direction == DMA_BIDIRECTIONAL) || (direction == DMA_FROM_DEVICE);
 
 	// get the map semaphore
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
@@ -2785,7 +2786,7 @@ static void dmaPageUnlock(ULWord deviceNumber, PDMA_PAGE_BUFFER pBuffer)
 		// release the locked pages
 		for (i = 0; i < pBuffer->numPages; i++)
 		{
-			if ((pBuffer->direction == PCI_DMA_FROMDEVICE) &&
+			if ((pBuffer->direction == DMA_FROM_DEVICE) &&
 				!PageReserved(pBuffer->pPageList[i]))
 			{
 				set_page_dirty(pBuffer->pPageList[i]);
@@ -2907,7 +2908,7 @@ static int dmaSgMap(ULWord deviceNumber, PDMA_PAGE_BUFFER pBuffer)
 			ret = nvidia_p2p_dma_map_pages(&(pNTV2Params->pci_dev)->dev,
 										   pBuffer->rdmaPage,
 										   &pBuffer->rdmaMap,
-										   (pBuffer->direction == PCI_DMA_TODEVICE)? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+										   (pBuffer->direction == DMA_TO_DEVICE)? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 #else
 			ret = nvidia_p2p_dma_map_pages(pNTV2Params->pci_dev,
 										   pBuffer->rdmaPage,
diff --git a/ajadriver/linux/ntv2driver.c b/ajadriver/linux/ntv2driver.c
index d97e242..a1569aa 100644
--- a/ajadriver/linux/ntv2driver.c
+++ b/ajadriver/linux/ntv2driver.c
@@ -4398,9 +4398,9 @@ pci_resources_config (struct pci_dev *pdev, NTV2PrivateParams * ntv2pp)
 	// a 64-bit mask from a previous driver load.
 
 #if defined(DMA_BIT_MASK)
-	if((res = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) != 0)
+	if((res = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) != 0)
 #else
-	if((res = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) != 0)
+	if((res = dma_set_mask(&pdev->dev, DMA_32BIT_MASK)) != 0)
 #endif
 	{
 	   MSG("%s: Unable to set DMA mask.  Disabling this board.\n",
@@ -4704,9 +4704,9 @@ dma_registers_init (struct pci_dev *pdev, NTV2PrivateParams * ntv2pp)
 	}
 
 #if defined(DMA_BIT_MASK)
-	if(!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
+	if(!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
 #else
-	if(!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
+	if(!dma_set_mask(&pdev->dev, DMA_64BIT_MASK))
 #endif
 	{
 		MSG("%s: Using 64-bit DMA mask with 64-bit capable firmware\n",
diff --git a/ajadriver/ntv2system.c b/ajadriver/ntv2system.c
index 0859239..0c723fc 100644
--- a/ajadriver/ntv2system.c
+++ b/ajadriver/ntv2system.c
@@ -1513,7 +1513,7 @@ bool ntv2DmaMemoryAlloc(Ntv2DmaMemory* pDmaMemory, Ntv2SystemContext* pSysCon, u
 	   (pSysCon->pDevice == NULL) ||
 	   (size == 0)) return false;
 
-	pAddress = pci_alloc_consistent(pSysCon->pDevice, size, &dmaAddress);
+	pAddress = dma_alloc_coherent(&pSysCon->pDevice->dev, size, &dmaAddress, GFP_ATOMIC);
 	if((pAddress == NULL) || (dmaAddress == 0)) return false;
 
 	// initialize memory data structure
@@ -1534,7 +1534,7 @@ void ntv2DmaMemoryFree(Ntv2DmaMemory* pDmaMemory)
 	   (pDmaMemory->dmaAddress == 0) ||
 	   (pDmaMemory->size == 0)) return;
 
-	pci_free_consistent(pDmaMemory->pDevice,
+	dma_free_coherent(&pDmaMemory->pDevice->dev,
 						pDmaMemory->size,
 						pDmaMemory->pAddress,
 						pDmaMemory->dmaAddress);
diff --git a/ajalibraries/ajantv2/includes/ntv2devicefeatures.h b/ajalibraries/ajantv2/includes/ntv2devicefeatures.h
index 4dc2bd5..cd1972e 100644
--- a/ajalibraries/ajantv2/includes/ntv2devicefeatures.h
+++ b/ajalibraries/ajantv2/includes/ntv2devicefeatures.h
@@ -10,7 +10,7 @@
 #define NTV2DEVICEFEATURES_H
 
 #if defined(AJALinux) || defined(AJA_LINUX)
-	#include <stddef.h>		// For size_t
+	#include <linux/stddef.h>		// For size_t
 #endif
 
 #include "ajaexport.h"
diff --git a/ajadriver/linux/ntv2serial.c b/ajadriver/linux/ntv2serial.c
index 3ba5ea6..8d9e483 100644
--- a/ajadriver/linux/ntv2serial.c
+++ b/ajadriver/linux/ntv2serial.c
@@ -170,7 +170,7 @@ static void ntv2_uartops_shutdown(struct uart_port *port)
 
 static void ntv2_uartops_set_termios(struct uart_port *port,
 									 struct ktermios *termios,
-									 struct ktermios *old)
+									 const struct ktermios *old)
 {
 	struct ntv2_serial *ntv2_ser = container_of(port, struct ntv2_serial, uart_port);
 	u32 valid = ntv2_kona_fld_serial_rx_valid;