lib: Open debugfs files for the given DRM device

When opening a DRM debugfs file, locate the right path based on the
given DRM device FD.

This is needed so, in setups with more than one DRM device, any
operations on debugfs files affect the expected DRM device.

v2: - rebased and fixed new API additions

v3: - updated chamelium test, which was missed previously
    - use the minor of the device for the debugfs path, not the major
    - have a proper exit handler for calling igt_hpd_storm_reset with the
      right device fd.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Robert Foss <robert.foss@collabora.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/igt_gt.h b/lib/igt_gt.h
index e44b6db1..1ed833d2 100644
--- a/lib/igt_gt.h
+++ b/lib/igt_gt.h
@@ -51,12 +51,12 @@ igt_hang_t igt_hang_ctx(int fd,
 igt_hang_t igt_hang_ring(int fd, int ring);
 void igt_post_hang_ring(int fd, igt_hang_t arg);
 
-void igt_force_gpu_reset(void);
+void igt_force_gpu_reset(int fd);
 
 void igt_fork_hang_helper(void);
 void igt_stop_hang_helper(void);
 
-int igt_open_forcewake_handle(void);
+int igt_open_forcewake_handle(int fd);
 
 int igt_setup_clflush(void);
 void igt_clflush_range(void *addr, int size);