linux-kernel - Re: Revert a bunch of patches in stable kernels

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Message-ID: <20130318201828.GB11643@kroah.com>
Date:	Mon, 18 Mar 2013 13:18:28 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Daniel Vetter <daniel.vetter@...ll.ch>
Cc:	stable <stable@...r.kernel.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>
Subject: Re: Revert a bunch of patches in stable kernels

On Mon, Mar 18, 2013 at 11:05:26AM +0100, Daniel Vetter wrote:
> Hi Greg&all,
> 
> So a recent stable backport to fix rc6 on ilk (which is disabled by
> default and with dubious power savings at best, unlike rc6 on snb and
> later) totally blew up all over the place:
> https://bugzilla.kernel.org/show_bug.cgi?id=55291
> https://lkml.org/lkml/2013/3/14/540
> 
> There might be more, I'm still recovering from mail floods due to
> traveling last week. I think the right course of action is to revert
> the offending patch (plus anything depending upon it) and give up on
> rc6 on ilk in 3.8 - too messy. All bug reports confirmed that 3.9-rc
> kernels work as expected. Upstream commits to revert:
> 
> 15239099d7a7a9ecdc1ccb5b187ae4cda5488ff9 drm/i915: enable irqs earlier
> when resuming
> 52d7ecedac3f96fb562cb482c139015372728638 drm/i915: reorder setup
> sequence to have irqs for output setup

Thanks for tracking this down, I've reverted both of these patches now,
which should hopefully fix the issues reported.

greg k-h
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