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Date: Tue, 6 Oct 2015 11:18:42 +0100
Message-ID: <CAPvkgC31-gUmetN0S=t9yJ30M8=x7Y7prxO40tiEB=zJiUvwBg@mail.gmail.com>
Subject: Re: [PATCH v2 21/22] arm64: cpuinfo: Expose MIDR_EL1 and REVIDR_EL1
 to sysfs
From: Steve Capper <steve.capper@linaro.org>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: "Suzuki K. Poulose" <suzuki.poulose@arm.com>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
        Mark Rutland <mark.rutland@arm.com>, Vladimir.Murzin@arm.com,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Marc Zyngier <marc.zyngier@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Edward Nevill <edward.nevill@linaro.org>, aph@redhat.com,
        james.morse@arm.com, Andre Przywara <andre.przywara@arm.com>,
        dave.martin@arm.com
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On 6 October 2015 at 10:09, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:
> On Mon, Oct 05, 2015 at 06:02:10PM +0100, Suzuki K. Poulose wrote:
>> +static int __init cpuinfo_regs_init(void)
>> +{
>> +     int cpu, ret;
>> +
>> +     for_each_present_cpu(cpu) {
>> +             struct device *dev = get_cpu_device(cpu);
>> +
>> +             if (!dev)
>> +                     return -1;
>
> NAK.  Go figure out why, I'm too lazy to tell you.

I will correct the return code to be -ENODEV.
Was that the reasoning behind the NAK?

>
>> +
>> +             ret = sysfs_create_group(&dev->kobj, &cpuregs_attr_group);
>> +             if (ret)
>> +                     return ret;
>> +     }
>> +
>> +     return 0;
>> +}
>> +
>> +device_initcall(cpuinfo_regs_init);
>> --
>> 1.7.9.5