RE: [PATCH 1/7] drivers: usb: Include appropriate header file in hcd.c

[David Laight]

> > These warning are non-default GCC warnings. These can be seen either
> > by adding W=1 while running make (i.e. make W=1) or adding
> > -Wmissing-prototypes in KBUILD_CFLAGS in the toplevel Makefile.
> 
> By default, we don't care about 'W=1' warnings, as no one sees them, and
> they don't matter.

-Wmissing-prototypes really ought to be defined.

Some of the other warning are a little more pedantic, the most annoying
is -Wsign-compare.  OTOH a lot of code out there is clean enough to build
without any warnings and with a moderate amount of pedantry from the compiler.

OTOH just including extra headers isn't ideal - it can considerably
slow down the compilation time. There are many subsystems that don't
really separate their internal headers from their external ones.

	David

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