[PATCH 03/42] LIBPCI: fixed RES2DEV in pci/cfg.h

[Daniel Hellstrom]

---
 cpukit/libpci/pci/cfg.h |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/cpukit/libpci/pci/cfg.h b/cpukit/libpci/pci/cfg.h
index 18c48db..8869a51 100644
--- a/cpukit/libpci/pci/cfg.h
+++ b/cpukit/libpci/pci/cfg.h
@@ -146,9 +146,12 @@ struct pci_res {
 	uint32_t	end;
 };
 
-/* Get Device from resource pointer */
+/* Get Device from resource pointer. bar is the index of the pci_dev.resources
+ * array and used to get the device base address of which the resource is
+ * associated with.
+ */
 #define RES2DEV(res) ((struct pci_dev *) \
-			((void *)res - (res->bar * (sizeof(struct pci_res)))))
+	((uintptr_t)res - (uintptr_t)(res->bar * (sizeof(struct pci_res)))))
 
 /* Device flags */
 #define PCI_DEV_BRIDGE    0x01  /* Device is a Bridge (struct pci_bus) */
-- 
1.7.0.4