linux-kernel - Re: [PATCH V3 2/5] Package Level Thermal Control and Power Limit Notification: pkgtemp hwmon driver

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Message-ID: <4C537514.9090109@zytor.com>
Date:	Fri, 30 Jul 2010 17:57:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Fenghua Yu <fenghua.yu@...el.com>
CC:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Len Brown <lenb@...nel.org>,
	Guenter Roeck <guenter.roeck@...csson.com>,
	Chen Gong <gong.chen@...ux.intel.com>,
	Jean Delvare <khali@...ux-fr.org>,
	Huaxu Wan <huaxu.wan@...el.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	lm-sensors <lm-sensors@...sensors.org>
Subject: Re: [PATCH V3 2/5] Package Level Thermal Control and Power Limit
 Notification: pkgtemp hwmon driver

On 07/29/2010 05:13 PM, Fenghua Yu wrote:
> +
> +enum { SHOW_TEMP, SHOW_TJMAX, SHOW_TTARGET, SHOW_LABEL, SHOW_NAME } SHOW;
> +

This conflicts with an equally poorly named global variable in
drivers/hwmon/via-cputemp.c, and the conflict is causing a build failure.

I think both these drivers have the same bug: a missing "typedef" before
the enum keyword, as present in coretemp.c.  Of course, one can question
if it should be given a typename at all since in none of these drivers
they are actually referenced by type, and instead the enumeration is
just used as a source of constants, which can perfectly well be handled
with an unnamed enum:

enum { SHOW_TEMP, SHOW_TJMAX, SHOW_TTARGET, SHOW_LABEL, SHOW_NAME };

	-hpa
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