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-rw-r--r--arch/microblaze/pci/pci-common.c42
1 files changed, 14 insertions, 28 deletions
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 1974567f3b4b..81556b843a8e 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -444,39 +444,25 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc,
resource_size_t *start, resource_size_t *end)
{
- struct pci_controller *hose = pci_bus_to_host(dev->bus);
- resource_size_t offset = 0;
+ struct pci_bus_region region;
- if (hose == NULL)
+ if (rsrc->flags & IORESOURCE_IO) {
+ pcibios_resource_to_bus(dev->bus, &region,
+ (struct resource *) rsrc);
+ *start = region.start;
+ *end = region.end;
return;
+ }
- if (rsrc->flags & IORESOURCE_IO)
- offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-
- /* We pass a fully fixed up address to userland for MMIO instead of
- * a BAR value because X is lame and expects to be able to use that
- * to pass to /dev/mem !
+ /* We pass a CPU physical address to userland for MMIO instead of a
+ * BAR value because X is lame and expects to be able to use that
+ * to pass to /dev/mem!
*
- * That means that we'll have potentially 64 bits values where some
- * userland apps only expect 32 (like X itself since it thinks only
- * Sparc has 64 bits MMIO) but if we don't do that, we break it on
- * 32 bits CHRPs :-(
- *
- * Hopefully, the sysfs insterface is immune to that gunk. Once X
- * has been fixed (and the fix spread enough), we can re-enable the
- * 2 lines below and pass down a BAR value to userland. In that case
- * we'll also have to re-enable the matching code in
- * __pci_mmap_make_offset().
- *
- * BenH.
+ * That means we may have 64-bit values where some apps only expect
+ * 32 (like X itself since it thinks only Sparc has 64-bit MMIO).
*/
-#if 0
- else if (rsrc->flags & IORESOURCE_MEM)
- offset = hose->pci_mem_offset;
-#endif
-
- *start = rsrc->start - offset;
- *end = rsrc->end - offset;
+ *start = rsrc->start;
+ *end = rsrc->end;
}
/**