From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wu Zhangjin Subject: Re: [PATCH v7 5/8] Loongson: YeeLoong: add hardware monitoring driver Date: Sat, 05 Dec 2009 00:29:45 +0800 Message-ID: <1259944185.9554.8.camel@falcon.domain.org> References: <102732263f647e47216c1f2cb121c30226cc995e.1259932036.git.wuzhangjin@gmail.com> <20091204080813.GB1540@ucw.cz> Reply-To: wuzhangjin@gmail.com Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:from:reply-to:to:cc :in-reply-to:references:content-type:organization:date:message-id :mime-version:x-mailer:content-transfer-encoding; bh=u2gLDyxrC9BjabwZXR9sf061r5jwuKspjFs+3ivl4bc=; b=mHmDFi37Qc8w9Ts860jywncImBgmXN3dv2zhsG3RelHfGMb/k45f+bMnABAS82aQRW GcxITNjqv7LFjjDsoFmPuHiTxDqziUb2kOir76MnGX0jZ1udFdE7MrxrVNDpUt9/M9t+ abB9kCYDcu0gvOQDSc1NRhVH8pHOY5znAKAxE= In-Reply-To: <20091204080813.GB1540@ucw.cz> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Pavel Machek Cc: Ralf Baechle , akpm@linux-foundation.org, linux-mips@linux-mips.org, linux-kernel@vger.kernel.org, Dmitry Torokhov , "Rafael J. Wysocki" , zhangfx@lemote.com, linux-laptop@vger.kernel.org On Fri, 2009-12-04 at 09:08 +0100, Pavel Machek wrote: > Hi! > > > +static int get_cpu_temp(void) > > +{ > > + int value; > > + > > + value = ec_read(REG_TEMPERATURE_VALUE); > > + > > + if (value & (1 << 7)) > > + value = (value & 0x7f) - 128; > > + else > > + value = value & 0xff; > > wtf? > > Maybe value should be 's8'? > > > +static int get_battery_current(void) > > +{ > > + int value; > > + > > + value = (ec_read(REG_BAT_CURRENT_HIGH) << 8) | > > + (ec_read(REG_BAT_CURRENT_LOW)); > > + > > + if (value & 0x8000) > > + value = 0xffff - value; > > Another version of pair-complement conversion; this one is broken -- > off by 1. > > > +static int parse_arg(const char *buf, unsigned long count, int *val) > > +{ > > + if (!count) > > + return 0; > > + if (sscanf(buf, "%i", val) != 1) > > + return -EINVAL; > > + return count; > > +} > > We have strict_strtoul for a reason... > Done, thanks! Regards, Wu Zhangjin