[U-Boot] [PATCH v2 8/8] test/py: vboot: Remove stderr redirect from openssl command

[Paul Burton]

The openssl command specified in test_with_algo() ultimately ends up
being run by RunAndLog::run(), which uses it to construct a Popen object
with the default shell=False. The stderr redirect in the command is
therefore simply passed to openssl as an argument. With at least openssl
1.1.0f this causes openssl, and therefore test_vboot, to fail with:

  genpkey: Use -help for summary.
  Exit code: 1

Any stderr output ought to be captured & stored in the RunAndLog
object's output field and returned from run() via run_and_log() to
test_with_algo() which then ignores it anyway, so we can drop the
shell-like redirection with no ill effects. With this fix test_vboot now
passes for me.

Signed-off-by: Paul Burton <paul.burton at imgtec.com>
Reviewed-by: Stephen Warren <swarren at nvidia.com>

---

Changes in v2:
- Place the % operator at the end of the last string line, not the start of the next.

 test/py/tests/test_vboot.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/py/tests/test_vboot.py b/test/py/tests/test_vboot.py
index 6e62820743..b1170aa4b0 100644
--- a/test/py/tests/test_vboot.py
+++ b/test/py/tests/test_vboot.py
@@ -174,8 +174,8 @@ def test_vboot(u_boot_console):
     public_exponent = 65537
     util.run_and_log(cons, 'openssl genpkey -algorithm RSA -out %sdev.key '
                      '-pkeyopt rsa_keygen_bits:2048 '
-                     '-pkeyopt rsa_keygen_pubexp:%d '
-                     '2>/dev/null'  % (tmpdir, public_exponent))
+                     '-pkeyopt rsa_keygen_pubexp:%d' %
+                     (tmpdir, public_exponent))
 
     # Create a certificate containing the public key
     util.run_and_log(cons, 'openssl req -batch -new -x509 -key %sdev.key -out '
-- 
2.14.1