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Only the interrupt flags that have been handled must be cleared. Otherwise, if a new interrupt occurs after the interrupt statuses are read and before they are cleared, then it is discarded without having been handled. This issue was particularly likely with two interrupt trigger conditions occurring on different pins of the same port in a short period of time. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>