PCI/ACPI: Remove the need for 'struct hotplug_params'

Browse source

We used to first parse all the _HPP and _HPX tables before using the
information to program registers of PCIe devices.  Up through HPX Type 2,
there was only one structure of each type, so we could cheat and store it
on the stack.

With HPX Type 3 we get an arbitrary number of entries, so the above model
doesn't scale that well.  Instead of parsing all tables at once, parse and
program each entry separately.  For _HPP and _HPX Types 0 through 2, this
is functionally equivalent.  The change enables the upcoming _HPX Type 3 to
integrate more easily.

Link: https://lore.kernel.org/lkml/20190208162414.3996-3-mr.nuke.me@gmail.com
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
[bhelgaas: fix build errors]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

...

This commit is contained in:

Alexandru Gagniuc 2019-04-19 14:27:36 -05:00 • committed by Bjorn Helgaas

parent e77704501c

commit 87fcf12e84

3 changed files with 72 additions and 70 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

108

drivers/pci/pci-acpi.c

View file

16

drivers/pci/probe.c

View file

18

include/linux/pci_hotplug.h

View file