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Chip name is communicated to user # 1.2. chip_name returns 'none' if the chip is still pending # 1.3. Device name is communicated to user # 2. Creating and configuring simulated chips # 2.1. Default number of lines is 1 # 2.2. Number of lines can be specified # 2.3. Label can be set # 2.4. Label can be left empty # 2.5. Line names can be configured # rmdir: failed to remove '/sys/kernel/config/gpio-sim/chip/bank/line0': Device or resource busy # Unable to remove the line # GPIO gpio-sim test FAIL # rmdir: failed to remove '/sys/kernel/config/gpio-sim/chip/bank/line0': Device or resource busy # Unable to remove the line # GPIO gpio-sim test FAIL not ok 2 selftests: gpio: gpio-sim.sh # exit=1 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250122/202501221006.a1ca5dfa-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki