2019-10-29 13:16:57

by Masahiro Yamada

[permalink] [raw]
Subject: Warning message from 'make nsdeps' when namespace is lower cases

Hi.

When I was playing with 'make nsdeps',
I saw a new warning.

If I rename USB_STORAGE to usb_storage,
I see 'warning: line 15: should usb_storage be a metavariable?'
Why? I think it comes from spatch.
It should be technically OK to use either upper or lower cases
for the namespace name.


Just apply the following, and try 'make nsdeps'.


diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
index 46635fa4a340..6f817d65c26b 100644
--- a/drivers/usb/storage/Makefile
+++ b/drivers/usb/storage/Makefile
@@ -8,7 +8,7 @@

ccflags-y := -I $(srctree)/drivers/scsi

-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_STORAGE
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=usb_storage

obj-$(CONFIG_USB_UAS) += uas.o
obj-$(CONFIG_USB_STORAGE) += usb-storage.o










--
Best Regards
Masahiro Yamada


2019-10-29 14:39:07

by Matthias Männich

[permalink] [raw]
Subject: Re: Warning message from 'make nsdeps' when namespace is lower cases

Hi!

On Tue, Oct 29, 2019 at 02:38:36PM +0100, Julia Lawall wrote:
>
>
>On Tue, 29 Oct 2019, Masahiro Yamada wrote:
>
>> Hi.
>>
>> When I was playing with 'make nsdeps',
>> I saw a new warning.
>>
>> If I rename USB_STORAGE to usb_storage,
>> I see 'warning: line 15: should usb_storage be a metavariable?'
>> Why? I think it comes from spatch.
>
>Yes, it would come from spatch.
>
>> It should be technically OK to use either upper or lower cases
>> for the namespace name.
>
>What is normally wanted? Uppercase or lowercase?

There is no (documented) preference or convention yet. The existing
namespaces (USB_STORAGE and MCB) use upper case. While technically both
should work, I have a personal preference for consistently using upper
case. Is there a way to suppress this warning as I agree that it might
be confusing?

Cheers,
Matthias

>
>julia
>
>>
>> Just apply the following, and try 'make nsdeps'.
>>
>>
>> diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
>> index 46635fa4a340..6f817d65c26b 100644
>> --- a/drivers/usb/storage/Makefile
>> +++ b/drivers/usb/storage/Makefile
>> @@ -8,7 +8,7 @@
>>
>> ccflags-y := -I $(srctree)/drivers/scsi
>>
>> -ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_STORAGE
>> +ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=usb_storage
>>
>> obj-$(CONFIG_USB_UAS) += uas.o
>> obj-$(CONFIG_USB_STORAGE) += usb-storage.o
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
>> Best Regards
>> Masahiro Yamada
>>

2019-10-29 19:41:39

by Julia Lawall

[permalink] [raw]
Subject: Re: Warning message from 'make nsdeps' when namespace is lower cases



On Tue, 29 Oct 2019, Masahiro Yamada wrote:

> Hi.
>
> When I was playing with 'make nsdeps',
> I saw a new warning.
>
> If I rename USB_STORAGE to usb_storage,
> I see 'warning: line 15: should usb_storage be a metavariable?'
> Why? I think it comes from spatch.

Yes, it would come from spatch.

> It should be technically OK to use either upper or lower cases
> for the namespace name.

What is normally wanted? Uppercase or lowercase?

julia

>
> Just apply the following, and try 'make nsdeps'.
>
>
> diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
> index 46635fa4a340..6f817d65c26b 100644
> --- a/drivers/usb/storage/Makefile
> +++ b/drivers/usb/storage/Makefile
> @@ -8,7 +8,7 @@
>
> ccflags-y := -I $(srctree)/drivers/scsi
>
> -ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_STORAGE
> +ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=usb_storage
>
> obj-$(CONFIG_USB_UAS) += uas.o
> obj-$(CONFIG_USB_STORAGE) += usb-storage.o
>
>
>
>
>
>
>
>
>
>
> --
> Best Regards
> Masahiro Yamada
>

2019-10-29 19:44:35

by Julia Lawall

[permalink] [raw]
Subject: Re: Warning message from 'make nsdeps' when namespace is lower cases



On Tue, 29 Oct 2019, Matthias Maennich wrote:

> Hi!
>
> On Tue, Oct 29, 2019 at 02:38:36PM +0100, Julia Lawall wrote:
> >
> >
> > On Tue, 29 Oct 2019, Masahiro Yamada wrote:
> >
> > > Hi.
> > >
> > > When I was playing with 'make nsdeps',
> > > I saw a new warning.
> > >
> > > If I rename USB_STORAGE to usb_storage,
> > > I see 'warning: line 15: should usb_storage be a metavariable?'
> > > Why? I think it comes from spatch.
> >
> > Yes, it would come from spatch.
> >
> > > It should be technically OK to use either upper or lower cases
> > > for the namespace name.
> >
> > What is normally wanted? Uppercase or lowercase?
>
> There is no (documented) preference or convention yet. The existing
> namespaces (USB_STORAGE and MCB) use upper case. While technically both
> should work, I have a personal preference for consistently using upper
> case. Is there a way to suppress this warning as I agree that it might
> be confusing?

The warning is not intentional in this case. I will have to fix
Coccinelle, but I can't do it until next week.

julia

>
> Cheers,
> Matthias
>
> >
> > julia
> >
> > >
> > > Just apply the following, and try 'make nsdeps'.
> > >
> > >
> > > diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
> > > index 46635fa4a340..6f817d65c26b 100644
> > > --- a/drivers/usb/storage/Makefile
> > > +++ b/drivers/usb/storage/Makefile
> > > @@ -8,7 +8,7 @@
> > >
> > > ccflags-y := -I $(srctree)/drivers/scsi
> > >
> > > -ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_STORAGE
> > > +ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=usb_storage
> > >
> > > obj-$(CONFIG_USB_UAS) += uas.o
> > > obj-$(CONFIG_USB_STORAGE) += usb-storage.o
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --
> > > Best Regards
> > > Masahiro Yamada
> > >
>