Re: [PATCH 1/1] spi: Remove unused definitions

[Pavel Machek <pavel@xxxxxx>]

On Wed 2014-08-06 14:27:20, Valdis.Kletnieks@xxxxxx wrote:
> On Wed, 06 Aug 2014 13:53:17 -0400, Nick Krause said:
> > Remove unused definition which cause the following warnings
> > 
> > drivers/spi/spi-omap-100k.c:73:0: warning: "WRITE" redefined [enabled by default]
> > include/linux/fs.h:193:0: note: this is the location of the previous definition
> > drivers/spi/spi-omap-100k.c:74:0: warning: "READ" redefined [enabled by default]
> > include/linux/fs.h:192:0: note: this is the location of the previous definition
> 
> > -#define WRITE 0
> > -#define READ  1
> 
> NAK.  Full stop.  These are potentially used in an inner macro someplace, and by
> removing these, the conflicting values from fs.h will be used instead.
> 
> #define READ                    0
> #define WRITE                   RW_MASK
> 
> So if there *is* a use in an inner macro, you just screwed the pooch
> and introduced a bug in this "clean up" - somebody will be expecting to see
> a 0 for a READ, and will receive a 1 instead.  This can't end well.

Actually.. having macros called READ and WRITE in fs.h is already something I'd say
can't end well. Can we rename those?

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