[PATCH v4 02/24] PCI: Add pci_resource_is_io() and pci_resource_is_mem() helpers

[Krzysztof Wilczyński]

Add helpers to check whether a PCI resource is of I/O port or
memory type.  These replace the open-coded pci_resource_flags()
with IORESOURCE_IO and IORESOURCE_MEM pattern used across the
tree.

Suggested-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski at kernel.org>
---
 include/linux/pci.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 1c270f1d5123..05aceb7f1f37 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2295,6 +2295,31 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma);
 	CONCATENATE(__pci_dev_for_each_res, COUNT_ARGS(__VA_ARGS__)) 	\
 		    (dev, res, __VA_ARGS__)
 
+/**
+ * pci_resource_is_io - check if a PCI resource is of I/O port type.
+ * @dev: PCI device to check.
+ * @resno: The resource number (BAR index) to check.
+ *
+ * Returns true if the resource type is I/O port.
+ */
+static inline bool pci_resource_is_io(const struct pci_dev *dev, int resno)
+{
+	return resource_type(pci_resource_n(dev, resno)) == IORESOURCE_IO;
+}
+
+/**
+ * pci_resource_is_mem - check if a PCI resource is of memory type.
+ * @dev: PCI device to check.
+ * @resno: The resource number (BAR index) to check.
+ *
+ * Returns true if the resource type is memory, including
+ * prefetchable memory.
+ */
+static inline bool pci_resource_is_mem(const struct pci_dev *dev, int resno)
+{
+	return resource_type(pci_resource_n(dev, resno)) == IORESOURCE_MEM;
+}
+
 /*
  * Similar to the helpers above, these manipulate per-pci_dev
  * driver-specific data.  They are really just a wrapper around
-- 
2.53.0