diff -Naur hybrid-v35_64-nodebug-pcoem-6_30_223_271.orig/src/shared/linux_osl.c hybrid-v35_64-nodebug-pcoem-6_30_223_271/src/shared/linux_osl.c
--- hybrid-v35_64-nodebug-pcoem-6_30_223_271.orig/src/shared/linux_osl.c	2019-01-26 19:33:46.518389000 +0100
+++ hybrid-v35_64-nodebug-pcoem-6_30_223_271/src/shared/linux_osl.c	2020-03-19 10:16:53.597986455 +0100
@@ -946,7 +946,11 @@
 void *
 osl_reg_map(uint32 pa, uint size)
 {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 6, 0)
 	return (ioremap_nocache((unsigned long)pa, (unsigned long)size));
+#else
+	return (ioremap((unsigned long)pa, (unsigned long)size));
+#endif 
 }
 
 void
diff -Naur hybrid-v35_64-nodebug-pcoem-6_30_223_271.orig/src/wl/sys/wl_linux.c hybrid-v35_64-nodebug-pcoem-6_30_223_271/src/wl/sys/wl_linux.c
--- hybrid-v35_64-nodebug-pcoem-6_30_223_271.orig/src/wl/sys/wl_linux.c	2018-04-18 13:53:37.484164000 +0200
+++ hybrid-v35_64-nodebug-pcoem-6_30_223_271/src/wl/sys/wl_linux.c	2020-03-19 10:24:18.154395810 +0100
@@ -586,7 +586,11 @@
 	}
 	wl->bcm_bustype = bustype;
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 6, 0)
 	if ((wl->regsva = ioremap_nocache(dev->base_addr, PCI_BAR0_WINSZ)) == NULL) {
+#else
+	if ((wl->regsva = ioremap(dev->base_addr, PCI_BAR0_WINSZ)) == NULL) {
+#endif 
 		WL_ERROR(("wl%d: ioremap() failed\n", unit));
 		goto fail;
 	}
@@ -780,7 +784,11 @@
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pdev, 0x40, val & 0xffff00ff);
 	bar1_size = pci_resource_len(pdev, 2);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 6, 0)
 	bar1_addr = (uchar *)ioremap_nocache(pci_resource_start(pdev, 2),
+#else
+	bar1_addr = (uchar *)ioremap(pci_resource_start(pdev, 2),
+#endif 
 		bar1_size);
 	wl = wl_attach(pdev->vendor, pdev->device, pci_resource_start(pdev, 0), PCI_BUS, pdev,
 		pdev->irq, bar1_addr, bar1_size);
@@ -3373,10 +3381,16 @@
 }
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 6, 0)
 static const struct file_operations wl_fops = {
 	.owner	= THIS_MODULE,
 	.read	= wl_proc_read,
 	.write	= wl_proc_write,
+#else
+static const struct proc_ops wl_fops = {
+	.proc_read	= wl_proc_read,
+	.proc_write	= wl_proc_write,
+#endif
 };
 #endif