From: Matthias Maennich maennich@google.com
commit 55c7549819e438f40a3ef1d8ac5c38b73390bcb7 upstream.
When running `make coccicheck` in report mode using the add_namespace.cocci file, it will fail for files that contain MODULE_LICENSE. Those match the replacement precondition, but spatch errors out as virtual.ns is not set.
In order to fix that, add the virtual rule nsdeps and only do search and replace if that rule has been explicitly requested.
In order to make spatch happy in report mode, we also need a dummy rule, as otherwise it errors out with "No rules apply". Using a script:python rule appears unrelated and odd, but this is the shortest I could come up with.
Adjust scripts/nsdeps accordingly to set the nsdeps rule when run trough `make nsdeps`.
Suggested-by: Julia Lawall julia.lawall@inria.fr Fixes: c7c4e29fb5a4 ("scripts: add_namespace: Fix coccicheck failed") Cc: YueHaibing yuehaibing@huawei.com Cc: jeyu@kernel.org Cc: cocci@systeme.lip6.fr Cc: stable@vger.kernel.org Signed-off-by: Matthias Maennich maennich@google.com Reported-by: Shuah Khan skhan@linuxfoundation.org Acked-by: Julia Lawall julia.lawall@inria.fr Link: https://lore.kernel.org/r/20200604164145.173925-1-maennich@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- scripts/coccinelle/misc/add_namespace.cocci | 8 +++++++- scripts/nsdeps | 2 +- 2 files changed, 8 insertions(+), 2 deletions(-)
--- a/scripts/coccinelle/misc/add_namespace.cocci +++ b/scripts/coccinelle/misc/add_namespace.cocci @@ -6,6 +6,7 @@ /// add a missing namespace tag to a module source file. ///
+virtual nsdeps virtual report
@has_ns_import@ @@ -16,10 +17,15 @@ MODULE_IMPORT_NS(ns);
// Add missing imports, but only adjacent to a MODULE_LICENSE statement. // That ensures we are adding it only to the main module source file. -@do_import depends on !has_ns_import@ +@do_import depends on !has_ns_import && nsdeps@ declarer name MODULE_LICENSE; expression license; identifier virtual.ns; @@ MODULE_LICENSE(license); + MODULE_IMPORT_NS(ns); + +// Dummy rule for report mode that would otherwise be empty and make spatch +// fail ("No rules apply.") +@script:python depends on report@ +@@ --- a/scripts/nsdeps +++ b/scripts/nsdeps @@ -23,7 +23,7 @@ fi
generate_deps_for_ns() { $SPATCH --very-quiet --in-place --sp-file \ - $srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2 + $srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2 }
generate_deps() {