kernel/tools/testing/selftests/gpio/gpio-mockup-cdev.c, branch linux-6.2.y

selftests: gpio: fix uninitialised variable warning

2021-11-15T13:27:50Z

When compiled with -Wall gpio-mockup-cdev.c reports an uninitialised variable warning. This is a false positive, as the variable is ignored in the case it is uninitialised, but initialise the variable anyway to remove the warning. Signed-off-by: Kent Gibson Signed-off-by: Bartosz Golaszewski

selftests: gpio: port to GPIO uAPI v2

2021-02-15T10:43:28Z

Add a port to the GPIO uAPI v2 interface and make it the default. Signed-off-by: Kent Gibson Acked-by: Linus Walleij Signed-off-by: Bartosz Golaszewski

selftests: gpio: rework and simplify test implementation

2021-02-15T10:43:28Z

The GPIO mockup selftests are overly complicated with separate implementations of the tests for sysfs and cdev uAPI, and with the cdev implementation being dependent on tools/gpio and libmount. Rework the test implementation to provide a common test suite with a simplified pluggable uAPI interface. The cdev implementation utilises the GPIO uAPI directly to remove the dependence on tools/gpio. The simplified uAPI interface removes the need for any file system mount checks in C, and so removes the dependence on libmount. The rework also fixes the sysfs test implementation which has been broken since the device created in the multiple gpiochip case was split into separate devices. Fixes: 8a39f597bcfd ("gpio: mockup: rework device probing") Signed-off-by: Kent Gibson Acked-by: Linus Walleij Signed-off-by: Bartosz Golaszewski