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Merge branch 'pci/controller/mvebu'

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- Use for_each_of_range() iterator for parsing 'ranges' (Rob Herring)

* pci/controller/mvebu:
  PCI: mvebu: Use for_each_of_range() iterator for parsing "ranges"
This commit is contained in:
Bjorn Helgaas 2025-06-04 10:50:41 -05:00
commit c7b9c59124
1 changed files with 9 additions and 17 deletions
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26
drivers/pci/controller/pci-mvebu.c
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@ -1179,37 +1179,29 @@ static int mvebu_get_tgt_attr(struct device_node *np, int devfn,
unsigned int *tgt,
unsigned int *attr)
{
const int na = 3, ns = 2;
const __be32 *range;
int rlen, nranges, rangesz, pna, i;
struct of_range range;
struct of_range_parser parser;
*tgt = -1;
*attr = -1;
range = of_get_property(np, "ranges", &rlen);
if (!range)
if (of_pci_range_parser_init(&parser, np))
return -EINVAL;
pna = of_n_addr_cells(np);
rangesz = pna + na + ns;
nranges = rlen / sizeof(__be32) / rangesz;
for (i = 0; i < nranges; i++, range += rangesz) {
u32 flags = of_read_number(range, 1);
u32 slot = of_read_number(range + 1, 1);
u64 cpuaddr = of_read_number(range + na, pna);
for_each_of_range(&parser, &range) {
unsigned long rtype;
u32 slot = upper_32_bits(range.bus_addr);
if (DT_FLAGS_TO_TYPE(flags) == DT_TYPE_IO)
if (DT_FLAGS_TO_TYPE(range.flags) == DT_TYPE_IO)
rtype = IORESOURCE_IO;
else if (DT_FLAGS_TO_TYPE(flags) == DT_TYPE_MEM32)
else if (DT_FLAGS_TO_TYPE(range.flags) == DT_TYPE_MEM32)
rtype = IORESOURCE_MEM;
else
continue;
if (slot == PCI_SLOT(devfn) && type == rtype) {
*tgt = DT_CPUADDR_TO_TARGET(cpuaddr);
*attr = DT_CPUADDR_TO_ATTR(cpuaddr);
*tgt = DT_CPUADDR_TO_TARGET(range.cpu_addr);
*attr = DT_CPUADDR_TO_ATTR(range.cpu_addr);
return 0;
}
}