diff options
| author |   Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> | 2021-04-13 20:12:40 -0700 |
|---|---|---|
| committer |   Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-04-16 09:15:41 +0200 |
| commit | 99bca615d89510917864fac6b26fd343eff2aba2 (patch) | |
| tree | bf7b89576b959f7fb5783dffd7d1b5474fb07d80 /arch/mips | |
| parent | MIPS: pci-legacy: remove busn_resource field (diff) | |
| download | linux-dev-99bca615d89510917864fac6b26fd343eff2aba2.tar.xz linux-dev-99bca615d89510917864fac6b26fd343eff2aba2.zip | |
MIPS: pci-legacy: use generic pci_enable_resources
Follow the reasoning from commit 842de40d93e0 ("PCI: add generic
pci_enable_resources()"):
The only functional difference from the MIPS version is that the
generic one uses "!r->parent" to check for resource collisions
instead of "!r->start && r->end".
That should have no effect on any pci-legacy driver.
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/pci/pci-legacy.c | 40 |
1 files changed, 2 insertions, 38 deletions
diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c index 78c22987bef0..c24226ea0a6e 100644 --- a/arch/mips/pci/pci-legacy.c +++ b/arch/mips/pci/pci-legacy.c @@ -241,47 +241,11 @@ static int __init pcibios_init(void) subsys_initcall(pcibios_init); -static int pcibios_enable_resources(struct pci_dev *dev, int mask) -{ - u16 cmd, old_cmd; - int idx; - struct resource *r; - - pci_read_config_word(dev, PCI_COMMAND, &cmd); - old_cmd = cmd; - for (idx=0; idx < PCI_NUM_RESOURCES; idx++) { - /* Only set up the requested stuff */ - if (!(mask & (1<<idx))) - continue; - - r = &dev->resource[idx]; - if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) - continue; - if ((idx == PCI_ROM_RESOURCE) && - (!(r->flags & IORESOURCE_ROM_ENABLE))) - continue; - if (!r->start && r->end) { - pci_err(dev, - "can't enable device: resource collisions\n"); - return -EINVAL; - } - if (r->flags & IORESOURCE_IO) - cmd |= PCI_COMMAND_IO; - if (r->flags & IORESOURCE_MEM) - cmd |= PCI_COMMAND_MEMORY; - } - if (cmd != old_cmd) { - pci_info(dev, "enabling device (%04x -> %04x)\n", old_cmd, cmd); - pci_write_config_word(dev, PCI_COMMAND, cmd); - } - return 0; -} - int pcibios_enable_device(struct pci_dev *dev, int mask) { - int err; + int err = pci_enable_resources(dev, mask); - if ((err = pcibios_enable_resources(dev, mask)) < 0) + if (err < 0) return err; return pcibios_plat_dev_init(dev); |