default enable sparse __CHECK_ENDIAN__ (was: Re: [PATCH v7 2/3] net: Add Keystone NetCP ethernet driver)

Joe Perches joe at
Wed Dec 10 19:04:59 PST 2014

On Wed, 2014-12-10 at 20:41 -0500, David Miller wrote:
> From: Murali Karicheri <m-karicheri2 at>
> > Are you referring to the static code analyser sparse that is invoked
> > through?
> You have to explicitly enable endian checking, it's not on by
> default.

There don't seem to be thousands of warnings anymore.

Maybe it's time to default enable it when using C=?

from: Documentation/sparse.txt:

The optional make variable CF can be used to pass arguments to sparse.  The
build system passes -Wbitwise to sparse automatically.  To perform endianness
checks, you may define __CHECK_ENDIAN__:

        make C=2 CF="-D__CHECK_ENDIAN__"

These checks are disabled by default as they generate a host of warnings.

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