Re: [PATCH -tip RESEND] x86: amd_iommu.c device_nb should be static

[Ingo Molnar]

* Jaswinder Singh Rajput <jaswinder@xxxxxxxxxx> wrote:

> 
> device_nb is used only by same file, it should be static.
> 
> Also fixed NULL pointer issue.
> 
> Fixed following sparse warnings :
>   arch/x86/kernel/amd_iommu.c:1195:23: warning: symbol 'device_nb' was not declared. Should it be static?
>   arch/x86/kernel/amd_iommu.c:1766:10: warning: Using plain integer as NULL pointer

Mind resending this with a proper changelog, along the template of:

|  This Sparse warning:
|
|      arch/x86/kernel/amd_iommu.c...
|
|  triggers because <reason>. <do action> to fix that - this also
|  addresses the Sparse warning.

Where, in this current case:

 <reason>    := device_nb is global but is only used in a single .c file
 <do action> := change device_nb to static

Please fill in the reason and action for the NULL fix as well.

Please write all similar warning fix commit log messages in a 
similar way in the future if you want me to apply them.

Thanks,

	Ingo
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