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From:   Vincent Pelletier <plr.vincent@gmail.com>
To:     Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>,
        Dwaipayan Ray <dwaipayanray1@gmail.com>,
        Lukas Bulwahn <lukas.bulwahn@gmail.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: [PATCH] checkpatch: Follow scripts/spdxcheck.py's switch to python3
Date:   Thu,  8 Jul 2021 10:29:18 +0000
Message-Id: <73dca402670be1e7a8adf139621dafd0dfa03191.1625740121.git.plr.vincent@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since commit d0259c42abff ("spdxcheck.py: Use Python 3") spdxcheck.py
expects to be run using python3. "python" may still be a python2 alias.
Instead, obey scripts/spdxcheck.py's shebang by executing it without
pre-selecting an interpreter.
Also, test python3 presence in path.

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
---
 scripts/checkpatch.pl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 23697a6b1eaa..a1cbd5fd0856 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1084,10 +1084,10 @@ sub is_maintained_obsolete {
 sub is_SPDX_License_valid {
 	my ($license) = @_;
 
-	return 1 if (!$tree || which("python") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$gitroot"));
+	return 1 if (!$tree || which("python3") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$gitroot"));
 
 	my $root_path = abs_path($root);
-	my $status = `cd "$root_path"; echo "$license" | python scripts/spdxcheck.py -`;
+	my $status = `cd "$root_path"; echo "$license" | scripts/spdxcheck.py -`;
 	return 0 if ($status ne "");
 	return 1;
 }
-- 
2.32.0