diff -Nurp broadcom-wl-6.30.223.271.orig/src/shared/linux_osl.c broadcom-wl-6.30.223.271/src/shared/linux_osl.c
--- broadcom-wl-6.30.223.271.orig/src/shared/linux_osl.c	2020-04-11 13:01:14.768843749 +0300
+++ broadcom-wl-6.30.223.271/src/shared/linux_osl.c	2020-04-11 13:15:29.246184298 +0300
@@ -946,7 +946,11 @@ osl_getcycles(void)
 void *
 osl_reg_map(uint32 pa, uint size)
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+	return (ioremap((unsigned long)pa, (unsigned long)size));
+#else
 	return (ioremap_nocache((unsigned long)pa, (unsigned long)size));
+#endif
 }
 
 void
diff -Nurp broadcom-wl-6.30.223.271.orig/src/wl/sys/wl_linux.c broadcom-wl-6.30.223.271/src/wl/sys/wl_linux.c
--- broadcom-wl-6.30.223.271.orig/src/wl/sys/wl_linux.c	2020-04-11 13:01:14.775844079 +0300
+++ broadcom-wl-6.30.223.271/src/wl/sys/wl_linux.c	2020-04-11 13:18:05.671569807 +0300
@@ -586,7 +586,11 @@ wl_attach(uint16 vendor, uint16 device,
 	}
 	wl->bcm_bustype = bustype;
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+	if ((wl->regsva = ioremap(dev->base_addr, PCI_BAR0_WINSZ)) == NULL) {
+#else
 	if ((wl->regsva = ioremap_nocache(dev->base_addr, PCI_BAR0_WINSZ)) == NULL) {
+#endif
 		WL_ERROR(("wl%d: ioremap() failed\n", unit));
 		goto fail;
 	}
@@ -776,7 +780,11 @@ wl_pci_probe(struct pci_dev *pdev, const
 	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(pci_resource_start(pdev, 2),
+#else
 		bar1_addr = (uchar *)ioremap_nocache(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);
@@ -3348,10 +3356,16 @@ wl_proc_write(struct file *filp, const c
 }
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+static const struct proc_ops wl_fops = {
+	.proc_read	= wl_proc_read,
+	.proc_write	= wl_proc_write,
+#else
 static const struct file_operations wl_fops = {
 	.owner	= THIS_MODULE,
 	.read	= wl_proc_read,
 	.write	= wl_proc_write,
+#endif
 };
 #endif
 
