From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH 1/1] AVR32 PATA driver Date: Fri, 31 Aug 2007 05:38:40 -0400 Message-ID: <46D7E1A0.2050002@garzik.org> References: <200708071126.08735.kngregertsen@norway.atmel.com> <200708071127.09751.kngregertsen@norway.atmel.com> <20070807165409.4c2a4451@the-village.bc.nu> <200708081657.08448.kngregertsen@norway.atmel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:41852 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753730AbXHaJir (ORCPT ); Fri, 31 Aug 2007 05:38:47 -0400 In-Reply-To: <200708081657.08448.kngregertsen@norway.atmel.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Kristoffer Nyborg Gregertsen Cc: Alan Cox , linux-ide@vger.kernel.org, gregerts@stud.ntnu.no Kristoffer Nyborg Gregertsen wrote: > Updated and simplified driver. Use only register transfer timing for both > data and register transfers. This gives poorer performance in PIO1 and 2, > but should not be a problem in PIO3 and 4, correct me if I'm wrong :) > > The driver works very we'll but I still wonder about the interrupts. I have > an interrupt line, that works nicely when POLLING flag is not set. The > problem is the number of interrupts that eat away my CPU cycles. > > When using the POLLING flag there seem to be some interrupts that dosen't get > cleared. Furthermore the device dosen't drive INTRQ high, it stays at 2.5 volts > and generates a lot of interrupts due to ripple / noise. What to do? > > Signed-off-by: Kristoffer Nyborg Gregertsen applied