CI sporadically reports the following issue: (device_reset:1335) DEBUG: rebind the driver to the device (device_reset:1335) DEBUG: reopen the device (device_reset:1335) drmtest-DEBUG: Looking for devices to open using filter 0: sys:/sys/devices/pci0000:00/0000:00:02.0 (device_reset:1335) drmtest-DEBUG: Filter matched | /dev/dri/renderD128 (device_reset:1335) drmtest-WARNING: No card matches the filter! [sys:/sys/devices/pci0000:00/0000:00:02.0] (device_reset:1335) CRITICAL: Test assertion failure function healthcheck, file ../../../usr/src/igt-gpu-tools/tests/device_reset.c:393: (device_reset:1335) CRITICAL: Failed assertion: dev->fds.dev >= 0 (device_reset:1335) CRITICAL: Last errno: 22, Invalid argument (device_reset:1335) CRITICAL: file descriptor dev->fds.dev failed After rebinding a DRM device driver, we now immediately start looking for DRM devices that match our PCI filter established before unbind. The above messages indicate that occasionally not all device nodes are ready by the time we are doing that. Introduce a delay to give the kernel a chance to re-create in devtmpfs all device nodes we are going to scan for. While being at it, fix an inline comment above an equivalent solution introduced before to core_hotunplug test. Janusz Krzysztofik (2): tests/device_reset: Wait for device nodes to re-appear tests/core_hotunplug: Fix inline comment on missing device nodes tests/core_hotunplug.c | 2 +- tests/device_reset.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) -- 2.45.2
