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ia64/PCI: Use ioremap() instead of open-coded equivalent

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Depositing __IA64_UNCACHED_OFFSET in the upper address bits is essentially
equivalent to ioremap(): it converts a CPU physical address to a virtual
address using the ia64 uncacheable identity map.

Call ioremap() instead of doing the phys-to-virt conversion manually with
__IA64_UNCACHED_OFFSET.

Note that this makes it obvious that (a) we're putting a virtual address in
a struct resource, and (b) we're passing a virtual address to ioremap()
below in the PCI_ROM_RESOURCE case.  These are both pre-existing problems
that I'll resolve next.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2016-03-02 16:20:18 -06:00
parent ab97b8cc56
commit f976721e82
1 changed files with 2 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
arch/ia64/sn/kernel/io_init.c
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@ -185,9 +185,8 @@ sn_io_slot_fixup(struct pci_dev *dev)
if (size == 0) if (size == 0)
continue; continue;
addr = pcidev_info->pdi_pio_mapped_addr[idx]; res->start = ioremap(pcidev_info->pdi_pio_mapped_addr[idx],
addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET; size + 1);
res->start = addr;
res->end = addr + size; res->end = addr + size;
/* /*