@@ -547,12 +547,21 @@ int pci_parse_request_of_pci_ranges(struct device *dev,
switch (resource_type(res)) {
case IORESOURCE_IO:
+#if defined(PCI_IOBASE) && defined(CONFIG_MMU)
err = devm_pci_remap_iospace(dev, res, iobase);
if (err) {
dev_warn(dev, "error %d: failed to map resource %pR\n",
err, res);
resource_list_destroy_entry(win);
}
+#else
+ /* Simply check if IO is inside the range */
+ if (res->end > IO_SPACE_LIMIT) {
+ dev_warn(dev, "resource %pR out of the IO range\n",
+ res);
+ resource_list_destroy_entry(win);
+ }
+#endif
break;
case IORESOURCE_MEM:
res_valid |= !(res->flags & IORESOURCE_PREFETCH);
There are some platforms doesn't support iospace remapping like MIPS. However, our PCI code will try to remap iospace unconditionally and reject io resources on these platforms. So we should remove iospace remapping check and use a range check instead on these platforms. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> --- drivers/pci/of.c | 9 +++++++++ 1 file changed, 9 insertions(+)