From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrey Skvortsov Subject: Re: [BISECTED REGRESSION in 3.19-rc1] [drm/i915] WARNING: drivers/gpu/drm/drm_irq.c:1077 drm_wait_one_vblank Date: Mon, 23 Feb 2015 22:52:42 +0300 Message-ID: <20150223195242.GA3871@crion86> References: <20150131211609.GA3710@yulia-desktop> <1423053134.30076.12.camel@tiscali.nl> <20150204172645.GA2623@crion86> <1424092249.7482.10.camel@tiscali.nl> <87egpgre3d.fsf@intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1788866863==" Return-path: In-Reply-To: <87egpgre3d.fsf@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Jani Nikula Cc: Paul Bolle , David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org --===============1788866863== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="Qxx1br4bt0+wmkIi" Content-Disposition: inline --Qxx1br4bt0+wmkIi Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 23, 2015 at 02:45:26PM +0200, Jani Nikula wrote: > On Mon, 16 Feb 2015, Paul Bolle wrote: > > I still see this on v3.19. I booted with drm.debug=3D0x4. The almost 2K > > lines in dmesg containing either "[drm" or this WARNING are pasted > > below. I really know nothing about all this, but I do note that only the > > WARNINGS are preceded by: > > [drm:intel_calculate_wm] FIFO watermark level: -5 > > [drm:i9xx_update_wm] FIFO watermarks - A: 26, B: 8 > > > > But perhaps that's another symptom of the same issue. A bit of staring > > at the code couldn't help me determine that. > > > > Perhaps these debug messages help someone in discovering what might be > > going on here. >=20 > Please try v4.0-rc1 or try cherry-picking this on top of v3.19 and > report back: >=20 > commit f9b61ff6bce9a44555324b29e593fdffc9a115bc > Author: Daniel Vetter > Date: Wed Jan 7 13:54:39 2015 +0100 >=20 > drm/i915: Push vblank enable/disable past encoder->enable/disable >=20 Hi,=20 Can't test this on v4.0-rc1, because I get black screen unfortunatelly.=20 But cherry-picking on v3.19 fixes all warnings drm_wait_one_vblank.=20 --=20 Best regards, Andrey Skvortsov PGP Key ID: 0x57A3AEAD --Qxx1br4bt0+wmkIi Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJU64UKAAoJEAF8y6L1SLCtnQ0P/jF6+sw4dIW7QP1CoURgmhh3 kfZud3Owja28Tia1cT0p79QGnHS3IVpFD0y0pUE4/HQdaelyOKNi3LbfGRIvof9j 6o+Wop8Xv6tveHwjFDcm8FDYptBY26i2RtYzHgVEKPmb7OAe2IN/uR3jx4p/ngT+ BGfFz9wqg75Gjotq2rY06sic+pNxOoc9UP5s+g3AQSjTSmKhhZcA5FWat44JAJ0h XYJE3A9eagPD3HxgDso3Edt+WFrAbpHL0u3O0to2hZYnzMaLj9rop1kiPIL72mpL 1dTl9Gc7Vocl4HGTImtRqjbi4xMw2xxQA1BNpucKfIbDyFfBSIMggkCxnd8qLxck rctkhEoWBgYygvuKcMM+Md6Dj98EcpX+8M1XsyoLhhU63IPQJdZBIuxpxnGwnruv S7KzoeYKxxImRRdFrmOUTdITY8dB6Q9ZgslQEc7EV+JH5Mp7HWAQuJwmXXUsfPGn I+3qO5RbACg4kXL+aMZ4RJaclLPh8E6/mOBfozIvkUn1tyiPF0eUgOJOt8v9JH1R YUq0XLS43OdI2ZaWVUK/vuviyF67aCUaRLKOR2fAD/B2pwAoTHNCQW4gAiML9+7l RUNfdsAGZSl6nJRktGUoPA/TWmZO/ml1I5OzHQrxSarT1oRVnyHWmM6DV+9C1Jj6 Ra7OTDy1BIdeErkpBw7L =k1oG -----END PGP SIGNATURE----- --Qxx1br4bt0+wmkIi-- --===============1788866863== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK --===============1788866863==--