[PATCH i-g-t] tests/intel/i915_module_load: Ignore missing PCI reset

Subtest fault-injection now performs PCI device reset before every driver
bind attempt and fails if that reset doesn't succeed.  That was OK if all
devices being tested supported a PCI reset method.  However, machines
with DG1 SKU 0x4905 used in CI suffer from device breakage and system
freezes after any PCI reset attempts, triggering CI job aborts.  That's
going to change soon with an upcoming kernel patch that disables PCI
reset capabilities on that card.

Attempt PCI reset and fail if not successful only if supported, otherwise
submit a debug message and continue the exercise.  With that in place,
the subtest should no longer abort CI jobs on DG1 as soon as the above
mentioned kernel fix is in place.

Signed-off-by: Janusz Krzysztofik <[email protected]>
---
 tests/intel/i915_module_load.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/intel/i915_module_load.c b/tests/intel/i915_module_load.c
index 26e30a1000..68e2386465 100644
--- a/tests/intel/i915_module_load.c
+++ b/tests/intel/i915_module_load.c
@@ -463,7 +463,8 @@ inject_fault_probe(int fd, const char pci_slot[], const char function_name[],
 	injection_list_add(function_name);
 	set_retval(function_name, inject_error);
 
-	igt_assert(igt_sysfs_set(devicefd, "reset", "1"));
+	if (!igt_debug_on(!igt_sysfs_has_attr(devicefd, "reset")))
+		igt_assert(igt_sysfs_set(devicefd, "reset", "1"));
 	igt_kmod_bind("i915", pci_slot);
 
 	err = -errno;
-- 
2.54.0