linux-kernel - Re: [PATCH 5/5] ACPI: Tie ACPI backlight devices to PCI devices if possible

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Message-ID: <20110206205619.GA21472@srcf.ucam.org>
Date:	Sun, 6 Feb 2011 20:56:19 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	akpm@...ux-foundation.org, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, rpurdie@...ys.net
Subject: Re: [PATCH 5/5] ACPI: Tie ACPI backlight devices to PCI devices if
	possible

On Sun, Feb 06, 2011 at 09:35:07PM +0100, Rafael J. Wysocki wrote:
> > +		acpi_get_parent(device->dev->handle, &acpi_parent);
> > +
> > +		pdev = acpi_get_pci_dev(acpi_parent);
> > +		if (pdev) {
> > +			parent = &pdev->dev;
> > +			pci_dev_put(pdev);
> > +		}
> 
> I'm afraid you can't do that or suspend problems will happen.

Ugh. Ok, how can we fix this?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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