linux-kernel - Re: [PATCH] ACPI / hotplug / PCI: Add hotplug contexts to PCI host bridges

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Message-ID: <20140611091636.GB1657@lahna.fi.intel.com>
Date:	Wed, 11 Jun 2014 12:16:36 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>
Subject: Re: [PATCH] ACPI / hotplug / PCI: Add hotplug contexts to PCI host
 bridges

On Tue, Jun 10, 2014 at 10:51:51PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> After relatively recent changes in the ACPI-based PCI hotplug
> (ACPIPHP) code, the acpiphp_check_host_bridge() executed for PCI
> host bridges via acpi_pci_root_scan_dependent() doesn't do anything
> useful, because those bridges do not have hotplug contexts.  That
> happens by mistake, so fix it by making acpiphp_enumerate_slots()
> add hotplug contexts to PCI host bridges too and modify
> acpiphp_remove_slots() to drop those contexts for host bridges
> as appropriate.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=76901
> Fixes: 2d8b1d566a5f (ACPI / hotplug / PCI: Get rid of check_sub_bridges())
> Reported-and-tested-by: Gavin Guo <gavin.guo@...onical.com>
> Cc: 3.15+ <stable@...r.kernel.org> # 3.15+
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

Thanks for taking care of this!
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