linux-kernel - Re: [RFC v1 2/6] platform/x86: intel_pmc_ipc: Use devm

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Message-ID: <55cbf2a1-b5c6-c320-a8b6-4475680cdb3e@gmail.com>
Date:   Mon, 21 Aug 2017 22:05:09 -0700
From:   sathya <sathyaosid@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>
Cc:     "x86@...nel.org" <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Zha Qipeng <qipeng.zha@...el.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "dvhart@...radead.org" <dvhart@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Shevchenko <andy@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [RFC v1 2/6] platform/x86: intel_pmc_ipc: Use devm_* calls in
 driver probe

Hi,


On 08/18/2017 05:24 AM, Andy Shevchenko wrote:
> On Tue, Aug 1, 2017 at 9:13 PM,
> <sathyanarayanan.kuppuswamy@...ux.intel.com> wrote:
>> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
>>
>> This patch cleans up unnecessary free/alloc calls in this driver
>> by using devm_* calls.
>>   static int ipc_plat_remove(struct platform_device *pdev)
>>   {
>> -       struct resource *res;
>> -
>>          sysfs_remove_group(&pdev->dev.kobj, &intel_ipc_group);
>> -       free_irq(ipcdev.irq, &ipcdev);
> Can we get an IRQ at any time here?
Yes, if the ipc_plat_probe() is successful then ipcdev.irq will have 
valid IRQ in all cases.
>
>>          platform_device_unregister(ipcdev.tco_dev);
>>          platform_device_unregister(ipcdev.punit_dev);
>>          platform_device_unregister(ipcdev.telemetry_dev);
>>          ipcdev.dev = NULL;
>>          return 0;
>>   }
>
-
Sathya