tests: crc: Skip test if CRC support isn't available

If CRC support isn't available (most likely caused by debugfs not being
mounted), the CRCReader constructor will throw an exception that the crc
test doesn't handle. Move construction of the CRCReader earlier and skip
the test if it fails.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/tests/kms-test-crc.py b/tests/kms-test-crc.py
index efb3cf0..01f9606 100755
--- a/tests/kms-test-crc.py
+++ b/tests/kms-test-crc.py
@@ -123,6 +123,13 @@ class CRCTest(kmstest.KMSTest):
         for crtc in self.card.crtcs:
             self.start(f'CRC calculation on CRTC {crtc.id}')
 
+            try:
+                crc_reader = kmstest.CRCReader(crtc)
+            except:
+                self.logger.log('Failed to create CRC reader, check that debugfs is mounted')
+                self.skip(f'CRC support not available for CRTC {crtc.id}')
+                continue
+
             # Get the connector and default mode
             try:
                 connector = connectors[crtc];
@@ -198,7 +205,6 @@ class CRCTest(kmstest.KMSTest):
                 # Set the CRC source and acquire 10 CRC values. Discard the
                 # first value, as the device is running and the new source
                 # needs one frame to take effect.
-                crc_reader = kmstest.CRCReader(crtc)
                 crc_reader.start(crc_source)
                 crcs = crc_reader.read(10)
                 crc_reader.stop()