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/linux-5.19.10/drivers/irqchip/
Dirq-gic-v3-its.c4968 int its_number; in its_compute_its_list_map() local
4977 its_number = find_first_zero_bit(&its_list_map, GICv4_ITS_LIST_MAX); in its_compute_its_list_map()
4978 if (its_number >= GICv4_ITS_LIST_MAX) { in its_compute_its_list_map()
4986 ctlr |= its_number << GITS_CTLR_ITS_NUMBER_SHIFT; in its_compute_its_list_map()
4989 if ((ctlr & GITS_CTLR_ITS_NUMBER) != (its_number << GITS_CTLR_ITS_NUMBER_SHIFT)) { in its_compute_its_list_map()
4990 its_number = ctlr & GITS_CTLR_ITS_NUMBER; in its_compute_its_list_map()
4991 its_number >>= GITS_CTLR_ITS_NUMBER_SHIFT; in its_compute_its_list_map()
4994 if (test_and_set_bit(its_number, &its_list_map)) { in its_compute_its_list_map()
4996 &res->start, its_number); in its_compute_its_list_map()
5000 return its_number; in its_compute_its_list_map()