iomap: implement pcim_iounmap_regions()
Implement pcim_iounmap_regions() - the opposite of
pcim_iomap_regions().
Signed-off-by: Tejun heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/lib/devres.c b/lib/devres.c
index eb38849..b1d336c 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -296,5 +296,31 @@
return rc;
}
EXPORT_SYMBOL(pcim_iomap_regions);
+
+/**
+ * pcim_iounmap_regions - Unmap and release PCI BARs
+ * @pdev: PCI device to map IO resources for
+ * @mask: Mask of BARs to unmap and release
+ *
+ * Unamp and release regions specified by @mask.
+ */
+void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask)
+{
+ void __iomem * const *iomap;
+ int i;
+
+ iomap = pcim_iomap_table(pdev);
+ if (!iomap)
+ return;
+
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ if (!(mask & (1 << i)))
+ continue;
+
+ pcim_iounmap(pdev, iomap[i]);
+ pci_release_region(pdev, i);
+ }
+}
+EXPORT_SYMBOL(pcim_iounmap_regions);
#endif
#endif