From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [PATCH] ARM: tegra: disable LP2 cpuidle state if PCIe is enabled Date: Mon, 6 May 2013 22:44:24 +0200 Message-ID: <20130506204424.GA18286@avionic-0098.adnet.avionic-design.de> References: <1367872744-25002-1-git-send-email-swarren@wwwdotorg.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="SUOF0GtieIMvvwua" Return-path: Content-Disposition: inline In-Reply-To: <1367872744-25002-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stephen Warren Cc: Jay Agarwal , Joseph Lo , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Stephen Warren List-Id: linux-tegra@vger.kernel.org --SUOF0GtieIMvvwua Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 06, 2013 at 02:39:04PM -0600, Stephen Warren wrote: > From: Stephen Warren >=20 > Tegra20 HW appears to have a bug such that PCIe device interrupts, whether > they are legacy IRQs or MSI, are lost when LP2 is enabled. To work around > this, simply disable LP2 if the PCI driver and DT node are both enabled. >=20 > Signed-off-by: Stephen Warren > --- > Thierry, >=20 > This patch is physically based on next-20130506 so that it doesn't > conflict with any of the recent cpuidle cleanup work. I'm sending it with > the expectation that you'll apply it to your PCIe development branch > though. If you do that, you'll see some conflicts unless you rebase your > dev branch onto something more recent than next-20130422; I assume you'll > do that rebase soon enough anyway, but if you weren't planning to, I can > resend the patch based on your current dev branch. Yes, I'll be rebasing my development branch soon anyway and I'll pull this patch into the branch. Thanks for writing it. Thierry --SUOF0GtieIMvvwua Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIcBAEBAgAGBQJRiBYoAAoJEN0jrNd/PrOhScoP/i6HBKFXQ/b1NK9TiceQvLvG F63UHEaPSgPx9suJuaRHEhKdSaHkh227rB/zMcvzdM03UxyCKJbJtjwLvrcp9OXd Q7sWqQMAS2uOaQ4tssxpunS/cIyNuKVRx42UQvsqAlG9MAz/+1QAKw01iUoPyZXt Xn3/UnFEmbWWXxurtQrDca1aP4oUCPZDqGps3qiyPeDHllqOht84xMo4OR+pPRrL mhaIBAp/G1ZgxR/MOeqszTT62xYJxPvpyquQ2B8ksBcDR0kFrWj0wi1eOlD0zc91 rEAVPOQ9SzFmp59ndpn4/jrnyBQKiei5yjsdXRSr7ylIFO7V13DVgm+tuXF+SKs6 bsbmbp/sf2CkkLPB+kVfF7v2Rschfn545eeHxFmLiZkIQvkZZCWONj9N+WJ0Y6Br 5tGEkbewoDb3JlVOk+S/WIY2tKzhRg1SE100JiPizIaJ86OmQ6fHjakS0aMNw+wM +WmviQYJnwwHX1zRNd6/jhtwU6+uPd8b5fFmAZYaxhOz2buxhOaeYAXszVBZUo+x IUQDsGTDU88OMDEZVKmvBP57EyRM5LQYLjc2ZvB4108RIKluAv/5kOOpeVmf1Dkt 1wW6szWaYjU3D8kNKCe19GsnDCwj5/r8IiVzc6RmpCz31bfFTTY2/9pbd3Z+N1Bo 60I/14eRbdKqDkPFTm62 =nm7Q -----END PGP SIGNATURE----- --SUOF0GtieIMvvwua--