From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kristoffer Ericson Subject: Re: Seg fault on any FB write (Epson S1D13A04 on Coldfire running 2.6.25) Date: Tue, 11 Nov 2008 19:50:43 +0100 Message-ID: <20081111195043.2e24ad61.kristoffer.ericson@gmail.com> References: <4918E5C3.2090108@one.net> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1371514456406285621==" Return-path: Received: from sfi-mx-4.v28.ch3.sourceforge.com ([172.29.28.124] helo=mx.sourceforge.net) by h25xhf1.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1KzxNh-0008KI-K9 for linux-fbdev-devel@lists.sourceforge.net; Tue, 11 Nov 2008 17:50:25 +0000 Received: from ey-out-1920.google.com ([74.125.78.147]) by 1b2kzd1.ch3.sourceforge.com with esmtp (Exim 4.69) id 1KzxNb-0002i5-Ka for linux-fbdev-devel@lists.sourceforge.net; Tue, 11 Nov 2008 17:50:25 +0000 Received: by ey-out-1920.google.com with SMTP id 4so2254eyk.4 for ; Tue, 11 Nov 2008 09:50:17 -0800 (PST) In-Reply-To: <4918E5C3.2090108@one.net> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: James Kimble Cc: linux-fbdev-devel@lists.sourceforge.net --===============1371514456406285621== Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA1"; boundary="Signature=_Tue__11_Nov_2008_19_50_43_+0100_Fsi2IXLMT8GhR8Yo" --Signature=_Tue__11_Nov_2008_19_50_43_+0100_Fsi2IXLMT8GhR8Yo Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, 10 Nov 2008 20:54:11 -0500 James Kimble wrote: >=20 > I've been working on porting the s1d13xxxfb driver from the latest=20 > kernel from Freescale for Coldfire to work with the S1D13A04 chip. I was= =20 > able to get things working to the point that I do get a little TUX logo=20 > up on the screen at boot up. Seemed like a good start but none of my=20 > user space applications will work. I can open the /dev/fb0 device and=20 > the data in the info structure is correct but if I try to write to any=20 > register or area in the frame buffer (or write to the device at all) I=20 > get a seg fault. Please drop me a mail with patch attached and I'll look at it, you must have hit something nasty. >=20 > I had an earlier driver working with the 2.6.10 kernel with the same=20 > hardware. The same application space program should work ( I would=20 > think...) but I get the seg fault on the first write to fb0. I tried a=20 > different memory location (ox4400 0000 to 0x7400 0000) for the CS=20 > associated with the video chip, no difference. Permissions for=20 > /dev/fb0 are "rw". No other process using fb0. This is really weird. >=20 > Any help or suggestions MUCH appreciated. >=20 > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challe= nge > Build the coolest Linux based applications with Moblin SDK & win great pr= izes > Grand prize is a trip for two to an Open Source event anywhere in the wor= ld > http://moblin-contest.org/redirect.php?banner_id=3D100&url=3D/ > _______________________________________________ > Linux-fbdev-devel mailing list > Linux-fbdev-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-fbdev-devel --=20 Kristoffer Ericson --Signature=_Tue__11_Nov_2008_19_50_43_+0100_Fsi2IXLMT8GhR8Yo Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkkZ1AMACgkQPQls10ERAGcadgCgimihE/B4Csu4hj1MwZ/qiKag cm8An0IKbmgCUPYCfFO7U6Y4e1ewVGUS =m0Qr -----END PGP SIGNATURE----- --Signature=_Tue__11_Nov_2008_19_50_43_+0100_Fsi2IXLMT8GhR8Yo-- --===============1371514456406285621== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ --===============1371514456406285621== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Linux-fbdev-devel mailing list Linux-fbdev-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-fbdev-devel --===============1371514456406285621==--