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staging: mt7621-pci: stop using of_pci_range_to_resource

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The logic here was already overriding the erroneous IO addresses
returned from of_pci_range_to_resource, which is the bulk of the logic.

So stop using it altogether and initialize the fields explicitly, as
done in aeba3731b1 ("powerpc/pci: Fix IO space breakage after
of_pci_range_to_resource() change").

Cc: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Link: https://lore.kernel.org/r/20210410173331.57949-1-ilya.lipnitskiy@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilya Lipnitskiy 2021-04-10 10:33:31 -07:00 committed by Greg Kroah-Hartman
parent 4e63e9b774
commit 426ceac431
1 changed files with 6 additions and 5 deletions
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11
drivers/staging/mt7621-pci/pci-mt7621.c
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@ -301,18 +301,19 @@ static int mt7621_pci_parse_request_of_pci_ranges(struct pci_host_bridge *host)
/*
* IO_SPACE_LIMIT for MIPS is 0xffff but this platform uses IO at
* upper address 0x001e160000 so we have to get the resource from
* the DT because when it has been requested it failed and has been
* removed from bridge->dma_ranges and bridge->windows. So parse it
* and remap it manually to make things work.
* upper address 0x001e160000. of_pci_range_to_resource does not work
* well for MIPS platforms that don't define PCI_IOBASE, so set the IO
* resource manually instead.
*/
pcie->io.name = node->full_name;
pcie->io.parent = pcie->io.child = pcie->io.sibling = NULL;
for_each_of_pci_range(&parser, &range) {
switch (range.flags & IORESOURCE_TYPE_BITS) {
case IORESOURCE_IO:
pcie->io_map_base =
(unsigned long)ioremap(range.cpu_addr,
range.size);
of_pci_range_to_resource(&range, node, &pcie->io);
pcie->io.flags = range.flags;
pcie->io.start = range.cpu_addr;
pcie->io.end = range.cpu_addr + range.size - 1;
set_io_port_base(pcie->io_map_base);