Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

[firefly-linux-kernel-4.4.55.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index cc76238c86fbb6c503feb74262d317b9df09dffd..6a9a1116f1ebed7312f903570df56615352d57c1 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -138,6 +138,20 @@ void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar)
        return ioremap_nocache(res->start, resource_size(res));
 }
 EXPORT_SYMBOL_GPL(pci_ioremap_bar);
+
+void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar)
+{
+       /*
+        * Make sure the BAR is actually a memory resource, not an IO resource
+        */
+       if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
+               WARN_ON(1);
+               return NULL;
+       }
+       return ioremap_wc(pci_resource_start(pdev, bar),
+                         pci_resource_len(pdev, bar));
+}
+EXPORT_SYMBOL_GPL(pci_ioremap_wc_bar);
 #endif