linux-kernel - Re: [RFC PATCH v2 03/10] iommu/amd: Add default branch in amd_iommu

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Date:   Thu, 6 Sep 2018 08:55:39 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     Alex Williamson <alex.williamson@...hat.com>
Cc:     baolu.lu@...ux.intel.com, Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Kirti Wankhede <kwankhede@...dia.com>, ashok.raj@...el.com,
        sanjay.k.kumar@...el.com, jacob.jun.pan@...el.com,
        kevin.tian@...el.com,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        yi.l.liu@...el.com, yi.y.sun@...el.com, peterx@...hat.com,
        tiwei.bie@...el.com, iommu@...ts.linux-foundation.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2 03/10] iommu/amd: Add default branch in
 amd_iommu_capable()

Hi,

On 09/06/2018 03:37 AM, Alex Williamson wrote:
> On Thu, 30 Aug 2018 12:09:15 +0800
> Lu Baolu <baolu.lu@...ux.intel.com> wrote:
> 
>> Otherwise, there will be a build warning:
>>
>> drivers/iommu/amd_iommu.c:3083:2: warning: enumeration value
>> 'IOMMU_CAP_AUX_DOMAIN' not handled in switch [-Wswitch]
>>
>> There is no functional change.
>>
>> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
>> ---
>>   drivers/iommu/amd_iommu.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
>> index 4e04fff23977..237ae6db4cfd 100644
>> --- a/drivers/iommu/amd_iommu.c
>> +++ b/drivers/iommu/amd_iommu.c
>> @@ -3077,6 +3077,8 @@ static bool amd_iommu_capable(enum iommu_cap cap)
>>   		return (irq_remapping_enabled == 1);
>>   	case IOMMU_CAP_NOEXEC:
>>   		return false;
>> +	default:
>> +		break;
>>   	}
>>   
>>   	return false;
> 
> Seems like a bug fix that doesn't need to be part of this RFC, send it
> separately.  Thanks,

Sure.

Best regards,
Lu Baolu