linux-kernel - Re: [PATCH v2 02/10] hwmon: (fam15h_power) Enable power1

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Date:	Mon, 26 Oct 2015 10:19:05 +0800
From:	Huang Rui <ray.huang@....com>
To:	Guenter Roeck <linux@...ck-us.net>
CC:	Borislav Petkov <bp@...e.de>,
	Peter Zijlstra <peterz@...radead.org>,
	"Jean Delvare" <jdelvare@...e.de>,
	Andy Lutomirski <luto@...capital.net>,
	"Andreas Herrmann" <herrmann.der.user@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"Len Brown" <lenb@...nel.org>,
	John Stultz <john.stultz@...aro.org>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	<lm-sensors@...sensors.org>, <linux-kernel@...r.kernel.org>,
	<x86@...nel.org>,
	Andreas Herrmann <herrmann.der.user@...glemail.com>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	Borislav Petkov <bp@...en8.de>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Aaron Lu <aaron.lu@...el.com>, Tony Li <tony.li@....com>
Subject: Re: [PATCH v2 02/10] hwmon: (fam15h_power) Enable power1_input on
 AMD Carrizo

On Fri, Oct 23, 2015 at 06:45:59AM -0700, Guenter Roeck wrote:
> On 10/19/2015 07:28 PM, Huang Rui wrote:
> >This patch enables power1_input attribute for Carrizo platform.
> >
> >Signed-off-by: Huang Rui <ray.huang@....com>
> >Cc: Borislav Petkov <bp@...en8.de>
> >Cc: Guenter Roeck <linux@...ck-us.net>
> >Cc: Peter Zijlstra <peterz@...radead.org>
> >Cc: Ingo Molnar <mingo@...nel.org>
> >---
> >  drivers/hwmon/fam15h_power.c | 9 +++++++--
> >  1 file changed, 7 insertions(+), 2 deletions(-)
> >
> >diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
> >index 41d022e..a090adf 100644
> >--- a/drivers/hwmon/fam15h_power.c
> >+++ b/drivers/hwmon/fam15h_power.c
> >@@ -115,8 +115,11 @@ static int fam15h_power_init_attrs(struct pci_dev *pdev,
> >  {
> >  	int n = FAM15H_MIN_NUM_ATTRS;
> >  	struct attribute **fam15h_power_attrs;
> >+	struct cpuinfo_x86 *c = &boot_cpu_data;
> >
> >-	if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model <= 0xf)
> >+	if (c->x86 == 0x15 &&
> >+	    ((c->x86_model <= 0xf) ||
> 
> Please no unnecessary ( ).
> 
> >+	     (c->x86_model >= 0x60 && c->x86_model <= 0x6f)))
> 
> Those are acceptable to clarify that the && has precedence on purpose,
> but "(c->x86_model <= 0xf)" is really unnecessary (and inconsistent
> with the rest of the code).
> 

OK, I will fixed it on V3. :)

Thanks,
Rui

> >  		n += 1;
> >
> >  	fam15h_power_attrs = devm_kcalloc(&pdev->dev, n,
> >@@ -128,7 +131,9 @@ static int fam15h_power_init_attrs(struct pci_dev *pdev,
> >
> >  	n = 0;
> >  	fam15h_power_attrs[n++] = &dev_attr_power1_crit.attr;
> >-	if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model <= 0xf)
> >+	if (c->x86 == 0x15 &&
> >+	    ((c->x86_model <= 0xf) ||
> >+	     (c->x86_model >= 0x60 && c->x86_model <= 0x6f)))
> 
> Same here.
> 
> >  		fam15h_power_attrs[n++] = &dev_attr_power1_input.attr;
> >
> >  	data->fam15h_power_group.attrs = fam15h_power_attrs;
> >
> 
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