Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757114Ab0HDQsi (ORCPT ); Wed, 4 Aug 2010 12:48:38 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:38600 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755263Ab0HDQsh (ORCPT ); Wed, 4 Aug 2010 12:48:37 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=VkF4VzbDg/U4kVKlWCUU1nDz2yxqmK6Slny7e1n0gc3+TjvMwMQcczjzrt4L0WF7BH ApiAjuU0Fph7TKcC5Gcw+tWCNmosT21hpGQRmOn5TJMhp9V08QyGnumHOnYZbj02Nhjq Hw4sQounqThkLLV2VXNuDJoNLv1MaWs8NDZXk= Subject: Re: [PATCH 2/2] MEMSTICK: Add driver for Ricoh R5C592 Card reader. From: Maxim Levitsky To: Alex Dubov Cc: LKML In-Reply-To: <441366.48179.qm@web37605.mail.mud.yahoo.com> References: <441366.48179.qm@web37605.mail.mud.yahoo.com> Content-Type: text/plain; charset="UTF-8" Date: Wed, 04 Aug 2010 19:48:32 +0300 Message-ID: <1280940512.16380.4.camel@maxim-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1219 Lines: 31 On Wed, 2010-08-04 at 00:57 -0700, Alex Dubov wrote: > I see two immediate problems with this patch: > > 1. On cosmetic level, custom debug macros should not be employed. Device > core already have this functionality (dynamic debug levels and such). Please, > use dev_dbg and friends for print-outs. This allows much easier control for debug. Single module parameter is enough to adjust it. This helps me help users. (Eg, kernel compilation is out of question) > > 2. On a structural level, I'd rather prefer host drivers to not start their > own threads. If you look at both current host implementations, they operate > in callback fashion. Apart from saving some resources, this reduces the > amount of problems encountered during suspend/resume and shutdown. This isn't possible. Hardware doesn't support interrupts on memstick bus changes, it only supports DMA done from/to internal FIFO, and DMA it only possible for 512 byte TPCs. Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/