[U-Boot] [PATCH 1/4] COMMON: Add __stringify() function

[Marek Vasut <marex@denx.de>]

Dear Albert ARIBAUD,

> Hi Marek,
> 
> On Sun, 23 Sep 2012 17:41:22 +0200, Marek Vasut <marex@denx.de> wrote:
> > Copied from Linux kernel:
> > commit 8f7c2c37319a81ef4c2bfdec67b1ccd5744d97e4
> > Date:   Wed Apr 8 16:58:57 2009 +0800
> > 
> > This function converts static number to string in preprocessor.
> > This is useful as it allows higher usage of puts() in favour of printf()
> 
> Fix commit message: this fonction is not limited to numbers.

WFM, can you review the series please ?

> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Wolfgang Denk <wd@denx.de>
> > ---
> > 
> >  include/common.h          |    1 +
> >  include/linux/stringify.h |   12 ++++++++++++
> >  2 files changed, 13 insertions(+), 0 deletions(-)
> >  create mode 100644 include/linux/stringify.h
> > 
> > diff --git a/include/common.h b/include/common.h
> > index 55025c0..9937a57 100644
> > --- a/include/common.h
> > +++ b/include/common.h
> > @@ -39,6 +39,7 @@ typedef volatile unsigned char	vu_char;
> > 
> >  #include <linux/bitops.h>
> >  #include <linux/types.h>
> >  #include <linux/string.h>
> > 
> > +#include <linux/stringify.h>
> > 
> >  #include <asm/ptrace.h>
> >  #include <stdarg.h>
> >  #if defined(CONFIG_PCI) && (defined(CONFIG_4xx) &&
> >  !defined(CONFIG_AP1000))
> > 
> > diff --git a/include/linux/stringify.h b/include/linux/stringify.h
> > new file mode 100644
> > index 0000000..841cec8
> > --- /dev/null
> > +++ b/include/linux/stringify.h
> > @@ -0,0 +1,12 @@
> > +#ifndef __LINUX_STRINGIFY_H
> > +#define __LINUX_STRINGIFY_H
> > +
> > +/* Indirect stringification.  Doing two levels allows the parameter to
> > be a + * macro itself.  For example, compile with -DFOO=bar,
> > __stringify(FOO) + * converts to "bar".
> > + */
> > +
> > +#define __stringify_1(x...)	#x
> > +#define __stringify(x...)	__stringify_1(x)
> > +
> > +#endif	/* !__LINUX_STRINGIFY_H */
> 
> Amicalement,

Best regards,
Marek Vasut