In commit 58c84eda075 functionality was introduced that tries to reinstate
the original, FW-assigned, BAR addresses of a PCI device when normal
resource assignment attempts fail. To keep track of the BIOS BAR
addresses, struct pci_dev was augmented with an array to hold the BAR
addresses of the PCI device: 'resource_size_t
fw_addr[DEVICE_COUNT_RESOURCE]'.
The reinstatement of BAR addresses is an uncommon event leaving the
'fw_addr' array unused normally. As the use of struct pci_dev is so
prevalent, this seems wasteful.
This patch series introduces a stand alone data structure and
corresponding set of interfacing routines, converting the underlying
aspects of the existing maintanence scheme to a list of temporary BIOS
BAR value entries instead.
---
Myron Stowe (3):
x86/PCI: Convert maintaining FW-assigned BIOS BAR values to use a list
PCI: Maintain a list of FW-assigned BIOS BAR values
PCI: Fix starting basis for resource requests
arch/x86/pci/i386.c | 2 -
drivers/pci/setup-res.c | 100 ++++++++++++++++++++++++++++++++++++++++++-----
include/linux/pci.h | 2 -
3 files changed, 92 insertions(+), 12 deletions(-)
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