9a1b21f1eb
BugLink: https://bugs.launchpad.net/bugs/2103496 The kernel doc for gpio-aggregator configfs interface, which was recently added, states that users should not be able to create an aggregator with a name prefixed by "_sysfs" via configfs. However, it was found that this guard does not function as expected (thanks to Dan Carpenter for identifying and fixing the issue). Add a test case to verify the guard. Signed-off-by: Koichiro Den<koichiro.den@canonical.com> Link:https://lore.kernel.org/r/20250412150119.1461023-1-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski<brgl@bgdev.pl> (cherry picked from commit 290ffcfe3042dcd5b701a98edd48d7962d35556b gpio/for-next) Signed-off-by: Koichiro Den<koichiro.den@canonical.com> Acked-by: Jacob Martin <jacob.martin@canonical.com> Acked-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Stefan Bader <stefan.bader@canonical.com>