[PATCH i-g-t v6 0/2] tools/igt_power: fix Xe crash via drmtest path helpers

[Sebastian Brzezinka <sebastian.brzezinka@intel.com>]

v6:
- shorten commit message for drm_open_driver_path()
- update doc to mention DRM_IOCTL_VERSION check instead of xe_device cache
- split combined __get_drm_device_name()/name[0] condition into separate
  checks using goto err pattern

v5:
- rename __drm_open_driver_path() to drm_open_driver_path() since
  xe_device_get() internally uses igt_assert(), making the __ no-assert
  prefix semantically incorrect
- add name[0] != 0 check after __get_drm_device_name() to guard against
  an empty driver name being treated as a valid DRM device

v4:
- rename drm_open_driver_path to __drm_open_driver_path (no asserts/requires)
- add DRM_IOCTL_VERSION check to verify fd is a DRM device before proceeding
- split the single patch into two: lib helper addition and igt_power

v3:
- remove redundant if (fd >= 0) guards on both close call sites

v2:
- move Xe cache setup/teardown out of igt_power
- add drm_open_driver_path() and use __drm_close_driver()
- drop the direct xe/xe_query dependency from igt_power

Sebastian Brzezinka (2):
  lib/drmtest: add drm_open_driver_path()
  tools/igt_power: initialize xe_device cache

 lib/drmtest.c     | 35 +++++++++++++++++++++++++++++++++++
 lib/drmtest.h     |  1 +
 tools/igt_power.c |  6 +++---
 3 files changed, 39 insertions(+), 3 deletions(-)

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2.53.0