From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 29 Jun 2001 13:57:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 29 Jun 2001 13:57:45 -0400 Received: from [194.213.32.142] ([194.213.32.142]:6404 "EHLO bug.ucw.cz") by vger.kernel.org with ESMTP id ; Fri, 29 Jun 2001 13:57:37 -0400 Message-ID: <20010629003836.E525@bug.ucw.cz> Date: Fri, 29 Jun 2001 00:38:36 +0200 From: Pavel Machek To: steve.snyder@philips.com, linux-kernel@vger.kernel.org Subject: Re: Any gain to supporting only a single PCMCIA slot? In-Reply-To: <0056910012761441000002L112*@MHS> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93i In-Reply-To: <0056910012761441000002L112*@MHS>; from steve.snyder@philips.com on Wed, Jun 20, 2001 at 04:56:40PM -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > PCMCIA/Cardbus controllers typically (always?) support 2 slots, and system > resources are allocated to support those slots. When you build PCMCIA > support into your kernel, you are implicitly asking for both slots to be > supported. I'm wondering if it would be worthwhile to let the user opt out of > supporting one of the slots. > > Compaq, in their finite wisdom, only provides a single Type2 Cardbus slot > on my Presario 1260 notebook. The controller (a TI PCI1131, see below) > can handle 2 slots, of course, but only a single physical connector is > present on this machine. Therefore I will never get the use of half of > the controller, including the I/O address, etc. that the kernel has > allocated for it. > Would it be worth the savings in system resources to allow support for > only a single slot? Probably not. Pavel -- I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org