linux-kernel - [PATCH 0/4] ACPI: kill acpi_pci_root

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Message-Id: <1349305214-3241-1-git-send-email-yinghai@kernel.org>
Date:	Wed,  3 Oct 2012 16:00:10 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Len Brown <lenb@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 0/4] ACPI: kill acpi_pci_root_start

Now acpi_pci_root_driver has two ops: .add and .start, aka acpi_pci_root_add
and acpi_pci_root_start.

That is for hotplug handling: .add need to return early to make sure all
acpi device could be created and added early. So .start could device_add
pci device that are found in acpi_pci_root_add/pci_acpi_scan_root().

That is holding pci devics to be out of devices for while.

We could use bus notifier to handle hotplug case.
	CONFIG_HOTPLUG is enabled always now.
Need to add drivers_autoprobe bit in acpi_device to hold attaching drivers
for acpi_devices, so could make sure all acpi_devices get created at first.
Then acpi_bus_attach() that is called from acpi_bus_add will attach driver
for all acpi_devices that are just created.

That make the logic more simple: hotplug path handling just like booting path
that drivers are attached after all acpi device get created.

At last we could remove all acpi_bus_start workaround.

Thanks

Yinghai

Yinghai Lu (4):
  ACPI: add drivers_autoprobe in struct acpi_device
  ACPI: use device drivers_autoprobe to delay loading acpi drivers
  PCI, ACPI: Remove not used acpi_pci_root_start()
  ACPI: remove acpi_op_start workaround

 drivers/acpi/pci_root.c |   27 +++------
 drivers/acpi/scan.c     |  145 ++++++++++++++++++++++-------------------------
 include/acpi/acpi_bus.h |    9 +---
 3 files changed, 77 insertions(+), 104 deletions(-)

-- 
1.7.7

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