PCI: Refactor distributing available memory to use loops

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pci_bus_distribute_available_resources() and
pci_bridge_distribute_available_resources() retain bridge window resources
and related data needed for distributing the available window in
independent variables for io, memory, and prefetchable memory windows. The
code is essentially the same for all of them and therefore repeated three
times with different variable names.

Refactor pci_bus_distribute_available_resources() to take an array. This
is complicated slightly by the function taking advantage of passing the
struct as value, which cannot be done for arrays in C. Therefore, copy the
data into a local array in the stack in the first loop.

Variable names are (hopefully) improved slightly as well.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250829131113.36754-21-ilpo.jarvinen@linux.intel.com

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Ilpo Järvinen 2025-08-29 16:11:09 +03:00 • committed by Bjorn Helgaas

parent ae88d0b9c5

commit 4292a1e45f

2 changed files with 74 additions and 91 deletions

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162

drivers/pci/setup-bus.c

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3

include/linux/pci.h

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