linux-kernel - [PATCH v1 0/3] PCI: ACPI: glue: Get rid of acpi_pci

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Message-ID: <1794818.tdWV9SEqCh@kreacher>
Date:   Sat, 18 Sep 2021 14:51:24 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>,
        Linux PCI <linux-pci@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 0/3] PCI: ACPI: glue: Get rid of acpi_pci_bus and rearrange code

Hi All,

After commit 375553a93201 ("PCI: Setup ACPI fwnode early and at the same time
with OF"), PCI only uses acpi_pci_bus for running the ->setup() and ->cleanup()
callbacks from there, but the functions pointed to by them can be invoked
directly from the ACPI "glue" code if the device being processed is a PCI one,
so patch [1/3] drops acpi_pci_bus and rearranges the code to call the PCI
"setup" and "cleanup" routines directly.

After that, the ->cleanup callback in struct acpi_bus_type has no users, so
patch [2/3] gets rid of it.

Finally, patch [3/3] rearranges acpi_device_notify() to avoid looking up
the "ACPI bus type" of the device in bus_type_list if its ACPI companion has
been set upfront.

Thanks!