[igt-dev] [PATCH i-g-t v2 1/1] tests/i915/pxp: PXP debugfs path promoted to global

[Alan Previn <alan.previn.teres.alexis@intel.com>]

As per recent kernel side update in preparation for
MTL, PXP is now a global i915 subsystem so let's update
the debugfs path to try both the legacy and new paths
before we fail.

Changes from prior rev:
   v1: - Fix a comment (Daniele)

Signed-off-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 tests/i915/gem_pxp.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/i915/gem_pxp.c b/tests/i915/gem_pxp.c
index ffad9b5a..41043df9 100644
--- a/tests/i915/gem_pxp.c
+++ b/tests/i915/gem_pxp.c
@@ -848,6 +848,14 @@ static void trigger_pxp_debugfs_forced_teardown(int i915)
 	char str[32];
 
 	fd = igt_debugfs_open(i915, "gt/pxp/terminate_state", O_RDWR);
+	/*
+	 * On newer kernels, we promoted PXP to be a global i915 subsystem,
+	 * so try again with a top-level path if we failed at the gt path.
+	 * If we still fail, then we assert out.
+	 */
+	if (fd < 0)
+		fd = igt_debugfs_open(i915, "pxp/terminate_state", O_RDWR);
+
 	igt_assert_f(fd >= 0, "Can't open pxp termination debugfs\n");
 	ret = snprintf(str, sizeof(str), "0x1");
 	igt_assert(ret > 2 && ret < sizeof(str));

base-commit: c001793d5f22deb01918b6ba52af829794582df1
-- 
2.34.1