From 054718358f45ec8f65fdc8ec152e89a18f6b889c Mon Sep 17 00:00:00 2001
From: hades DAQ on depc418/hadeswrp01 <j.adamczewski@gsi.de>
Date: Thu, 4 Apr 2019 14:59:23 +0200
Subject: [PATCH] JAM: fixed pexor kernel module for kernel 5.0.3

---
 pexor/kernel-module/Makefile    | 2 ++
 pexor/kernel-module/pexor_trb.c | 8 +++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/pexor/kernel-module/Makefile b/pexor/kernel-module/Makefile
index 21012e2..026836e 100644
--- a/pexor/kernel-module/Makefile
+++ b/pexor/kernel-module/Makefile
@@ -16,6 +16,8 @@ PWD       := $(shell pwd)
 
 TARGETS = pexor.ko
 
+ccflags-y +=-Wno-date-time
+
 all: $(TARGETS)
 
 .PHONY: distclean
diff --git a/pexor/kernel-module/pexor_trb.c b/pexor/kernel-module/pexor_trb.c
index 65fbc56..4be0b38 100644
--- a/pexor/kernel-module/pexor_trb.c
+++ b/pexor/kernel-module/pexor_trb.c
@@ -45,6 +45,10 @@ static struct class* pexor_class;
 static dev_t pexor_devt;
 static int my_major_nr = 0;
 
+//#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+static u64 pexor_dma_mask = DMA_BIT_MASK(32);
+//#endif
+
 struct dev_pexor
 {
   u32* irq_control;             /* irq control register               */
@@ -629,7 +633,6 @@ int probe(struct pci_dev* dev,
 
   /* TODO: export special things to class in sysfs ? */
 
-
   if (!IS_ERR(pexor_class)) {
     /* driver init had successfully created class, now we create device: */
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
@@ -654,6 +657,9 @@ int probe(struct pci_dev* dev,
        support here: */
     pexor_msg(KERN_ERR "Could not add PEXOR device node to /dev !");
   }
+  
+  /** JAM 4-APR-2019: try this for kernel 5.0.3*/
+  priv->class_dev->dma_mask = &pexor_dma_mask;
 
   /* init pexor_dma buffer */
   if (pexor_alloc_dma_buffer(priv, DMA_BUFFER_NUM_PAGES * PAGE_SIZE) != 0) {
-- 
2.43.0