86 	volatile uint32_t *extiss;  in gpio_gd32_configure_extiss()  local
91 		extiss = &SYSCFG_EXTISS0;  in gpio_gd32_configure_extiss()
94 		extiss = &SYSCFG_EXTISS1;  in gpio_gd32_configure_extiss()
97 		extiss = &SYSCFG_EXTISS2;  in gpio_gd32_configure_extiss()
100 		extiss = &SYSCFG_EXTISS3;  in gpio_gd32_configure_extiss()
104 		extiss = &AFIO_EXTISS0;  in gpio_gd32_configure_extiss()
107 		extiss = &AFIO_EXTISS1;  in gpio_gd32_configure_extiss()
110 		extiss = &AFIO_EXTISS2;  in gpio_gd32_configure_extiss()
113 		extiss = &AFIO_EXTISS3;  in gpio_gd32_configure_extiss()
123 	*extiss &= ~(EXTISS_MSK << shift);  in gpio_gd32_configure_extiss()
124 	*extiss |= port_index << shift;  in gpio_gd32_configure_extiss()