From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262623AbVDHAEW (ORCPT ); Thu, 7 Apr 2005 20:04:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262625AbVDHAEW (ORCPT ); Thu, 7 Apr 2005 20:04:22 -0400 Received: from gate.crashing.org ([63.228.1.57]:46303 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S262623AbVDHAET (ORCPT ); Thu, 7 Apr 2005 20:04:19 -0400 Subject: Re: [PATCH] radeonfb: (#2) Implement proper workarounds for PLL accesses From: Benjamin Herrenschmidt To: Andreas Schwab Cc: Dave Airlie , Linux Kernel list In-Reply-To: References: <1110519743.5810.13.camel@gaston> <1110672745.5787.60.camel@gaston> <1112743901.9568.67.camel@gaston> <1112827655.9518.194.camel@gaston> <21d7e9970504071422349426eb@mail.gmail.com> <1112914795.9568.320.camel@gaston> Content-Type: text/plain Date: Fri, 08 Apr 2005 10:03:05 +1000 Message-Id: <1112918586.9567.343.camel@gaston> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2005-04-08 at 01:58 +0200, Andreas Schwab wrote: > Benjamin Herrenschmidt writes: > > > Yes, that's very extreme, I suspect somebody is banging on set_par or > > something like that. > > fb_setcolreg is it. Ahhh... interesting. I'll see if I can find a way to work around that one. Best would be to "cache" the current PLL register index in fact, but I'm afraid that may not work terribly well with userland apps hacking it ... Ben.