Bug 82280

Tries to use pipe 0 with LVDS, fails to setup the output and blocks forever waiting for a vblank interrupt.

Retested without the extra vblank patches, and it works with just fixing kms_flip_tiling to use the right pipe.

Test still timeout on latest -nightly(e91331cf71c509af3dfae75cd9bca3db13d7da95) on PNV

[root@x-pnv2 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling
IGT-Version: 1.7-g50166d2 (i686) (Linux: 3.17.0-rc2_drm-intel-nightly_e91331_20140828+ i686)
Subtest flip-changes-tiling: TIMEOUT

I think it should be as simple as:

diff --git a/tests/kms_flip_tiling.c b/tests/kms_flip_tiling.c
index 1f2caac..9c2f7fe 100644
--- a/tests/kms_flip_tiling.c
+++ b/tests/kms_flip_tiling.c
@@ -67,9 +67,9 @@ test_flip_changes_tiling(data_t *data, igt_output_t *output)
        igt_crc_t reference_crc, crc;
        int fb_id, pipe, ret, width;
 
-       pipe = 0;
+       pipe = output->config.pipe;
        pipe_crc = igt_pipe_crc_new(pipe, INTEL_PIPE_CRC_SOURCE_AUTO);
-       igt_output_set_pipe(output, 0);
+       igt_output_set_pipe(output, pipe);
 
but now the pipe crc fails to open.

commit be6bb4ce4a413df5ec385523313a4e2a3894d4c8
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Sep 7 15:52:10 2014 +0100

    igt/kms_flip_tiling: Use the associated pipe for the output
    
    This stops us from using an illegal pipe, such as pipe 0 for LVDS on
    PNV.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82280
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

Verified 
I will report a new bug for this failure.

[root@x-pnv2 tests]# ./kms_flip_tiling --run-subtest flip-changes-tiling
IGT-Version: 1.8-gd9d3f4b (i686) (Linux: 3.17.0-rc4_drm-intel-nightly_99f444_20140910+ i686)
Test assertion failure function igt_primary_plane_commit_legacy, file igt_kms.c:1419:
Failed assertion: ret == 0
Last errno: 13, Permission denied
Subtest flip-changes-tiling: FAIL (0.202s)

Closing verified+fixed