From mboxrd@z Thu Jan 1 00:00:00 1970 From: llandre Subject: Re: R: spi_async and heavy CPU occupation by ksoftirqd Date: Tue, 14 Aug 2007 10:29:36 +0200 Message-ID: <46C167F0.4040100@dave-tech.it> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: David Brownell , spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Andrea Paterniani Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-spi.vger.kernel.org AFAIK introducing support for RDY in the driver is not a trivial matter. Since a) I just need to perform 1-byte transactions to communicate with Quantum QT510 b) I don't have much time to spend on this issue (customer needs to assemble a demo quickly) I'm afraid I'll have to write a dirty patch just to make my specific configuration work. I'll keep you informed anyway. Regards, llandre DAVE Electronics System House - R&D Department web: http://www.dave-tech.it email: r&d2-4VKA1VU3ct/j+vYz1yj4TQ@public.gmane.org > You're right the current version of the driver doesn't support RDY control. > Infact SPI_DEFAULT_CONTROL is defined with SPI_CONTROL_DRCTL_0. > Also setup function doesn't managed DRCTL changes. > > Then you probably changes SPI_DEFAULT_CONTROL to use SPI_CONTROL_DRCTL_2. > > Please do your suggestions for driver modification in order to release a driver patch. > > - Andrea ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/