On Wed, Aug 21, 2019 at 12:49:26PM +0100, Matthias Maennich wrote:

Modules using these symbols are required to explicitly import the
namespace. This patch was generated with the following steps and serves
as a reference to use the symbol namespace feature:

 1) Use EXPORT_SYMBOL_NS* macros instead of EXPORT_SYMBOL* for symbols
    in watchdog_core.c
 2) make  (see warnings during modpost about missing imports)
 3) make nsdeps

I used 'allmodconfig' for the above steps to ensure all occurrences are
patched.

Defining DEFAULT_SYMBOL_NAMESPACE in the Makefile is not trivial in this
case as not only watchdog_core is defined in drivers/watchdog/Makefile.
Hence this patch uses the variant of using the EXPORT_SYMBOL_NS* macros
to export into a different namespace.

An alternative to this patch would be a single definition line before
any use of EXPORT_SYMBOL*:
 #define DEFAULT_SYMBOL_NAMESPACE WATCHDOG_CORE

Signed-off-by: Matthias Maennich <maennich@google.com>

As we talked in chat, the cc: list for this patch was crazy :)

If you end up resending this (as odds are the mailing lists will trash
it for too many recipients), feel free to add:

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Great work,

greg k-h