Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759547AbXJLQmo (ORCPT ); Fri, 12 Oct 2007 12:42:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759677AbXJLQmR (ORCPT ); Fri, 12 Oct 2007 12:42:17 -0400 Received: from nf-out-0910.google.com ([64.233.182.185]:2980 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758997AbXJLQmN (ORCPT ); Fri, 12 Oct 2007 12:42:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:date:to:cc:subject:message-id:references:mime-version:content-type:content-disposition:in-reply-to:user-agent:from; b=CL5qyTn5SybLCyvWMhuokWdqH4VnjnoYROcTopqTliUq/GyhX6p957fj6Ta3iNclsF+W+fGrqbsF543Bl23BCk/83ONY/8g7tU2xfFgAyqYXtYIEePfx7K8SXLQIIZFma7zaS4a5J1iMbqmjeuYpumGu6HdfEk/RF1OmPVJAzSg= Date: Fri, 12 Oct 2007 18:41:31 +0200 To: Bryan Wu Cc: dmitry.torokhov@gmail.com, linux-input@atrey.karlin.mff.cuni.cz, linux-joystick@atrey.karlin.mff.cuni.cz, linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [PATCH try #2] Input/Joystick Driver: add support AD7142 joystick driver Message-ID: <20071012164131.GA12559@Ahmed> References: <1192174727.6247.20.camel@roc-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1192174727.6247.20.camel@roc-laptop> User-Agent: Mutt/1.5.11 From: "Ahmed S. Darwish" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1627 Lines: 58 On Fri, Oct 12, 2007 at 03:38:47PM +0800, Bryan Wu wrote: > > Signed-off-by: Bryan Wu > --- Hi Bryan, Why creating module's own kthread to call ad7142_decode and process keycodes instead of using a tasklet ? Isn't disabling device interrupts from the begining of the ISR "ad7142_interrupt" till the kthread "ad7142_thread" got waked-up and scheduled a long time, espicially if there's a high load on the userspace side ? Minor issues below. > + > +/* R ADC stage 0 - 11 result (uncompensated) actually located in SRAM */ > +#define ADCRESULT_S0 0x0B > +#define ADCRESULT_S1 0x0C > +#define ADCRESULT_S2 0x0D > +#define ADCRESULT_S3 0x0E > +#define ADCRESULT_S4 0x0F > +#define ADCRESULT_S5 0x10 > +#define ADCRESULT_S6 0x11 > +#define ADCRESULT_S7 0x12 > +#define ADCRESULT_S8 0x13 > +#define ADCRESULT_S9 0x14 > +#define ADCRESULT_S10 0x15 > +#define ADCRESULT_S11 0x16 > + Keeping last two lines aligned with their above counterparts ? > +static int > +ad7142_probe(struct i2c_adapter *adap, int addr, int kind) > +{ > + struct i2c_client *client; > + int rc; > + > + client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); > + if (!client) > + return -ENOMEM; > + memset(client, 0, sizeof(struct i2c_client)); kzalloc. Regards, -- Ahmed S. Darwish HomePage: http://darwish.07.googlepages.com Blog: http://darwish-07.blogspot.com - 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/