diff options
| author | Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au> | 2019-06-22 18:43:46 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-07-02 20:56:26 +0200 |
| commit | 5c6bcc344b18dfb3b0ddcca6c26f6858879f73bf (patch) | |
| tree | 7c3829214ea44eba8feb58f07ead8115b1e22f1e /drivers/pci/setup-bus.c | |
| parent | arm64: PCI: Preserve firmware configuration when desired (diff) | |
| download | linux-5c6bcc344b18dfb3b0ddcca6c26f6858879f73bf.tar.xz linux-5c6bcc344b18dfb3b0ddcca6c26f6858879f73bf.zip | |
PCI: Simplify pci_bus_distribute_available_resources()
Reorder pci_bus_distribute_available_resources() to group related code
together. No functional change intended.
Link: https://lore.kernel.org/r/PS2P216MB0642C7A485649D2D787A1C6F80000@PS2P216MB0642.KORP216.PROD.OUTLOOK.COM
Link: https://lore.kernel.org/r/20190622210310.180905-2-helgaas@kernel.org
Signed-off-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index d533102b2788..ee5be219dd41 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1866,16 +1866,6 @@ static void pci_bus_distribute_available_resources(struct pci_bus *bus, available_mmio_pref); /* - * Calculate the total amount of extra resource space we can - * pass to bridges below this one. This is basically the - * extra space reduced by the minimal required space for the - * non-hotplug bridges. - */ - remaining_io = available_io; - remaining_mmio = available_mmio; - remaining_mmio_pref = available_mmio_pref; - - /* * Calculate how many hotplug bridges and normal bridges there * are on this bus. We will distribute the additional available * resources between hotplug bridges. @@ -1887,6 +1877,31 @@ static void pci_bus_distribute_available_resources(struct pci_bus *bus, normal_bridges++; } + /* + * There is only one bridge on the bus so it gets all available + * resources which it can then distribute to the possible hotplug + * bridges below. + */ + if (hotplug_bridges + normal_bridges == 1) { + dev = list_first_entry(&bus->devices, struct pci_dev, bus_list); + if (dev->subordinate) { + pci_bus_distribute_available_resources(dev->subordinate, + add_list, available_io, available_mmio, + available_mmio_pref); + } + return; + } + + /* + * Calculate the total amount of extra resource space we can + * pass to bridges below this one. This is basically the + * extra space reduced by the minimal required space for the + * non-hotplug bridges. + */ + remaining_io = available_io; + remaining_mmio = available_mmio; + remaining_mmio_pref = available_mmio_pref; + for_each_pci_bridge(dev, bus) { const struct resource *res; @@ -1911,21 +1926,6 @@ static void pci_bus_distribute_available_resources(struct pci_bus *bus, } /* - * There is only one bridge on the bus so it gets all available - * resources which it can then distribute to the possible hotplug - * bridges below. - */ - if (hotplug_bridges + normal_bridges == 1) { - dev = list_first_entry(&bus->devices, struct pci_dev, bus_list); - if (dev->subordinate) { - pci_bus_distribute_available_resources(dev->subordinate, - add_list, available_io, available_mmio, - available_mmio_pref); - } - return; - } - - /* * Go over devices on this bus and distribute the remaining * resource space between hotplug bridges. */ |