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-rw-r--r--chip/it83xx/irq.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/chip/it83xx/irq.c b/chip/it83xx/irq.c
index 275c6e0e36..dd2b936f55 100644
--- a/chip/it83xx/irq.c
+++ b/chip/it83xx/irq.c
@@ -86,6 +86,9 @@ int chip_get_ec_int(void)
ec_int -= 16;
#else /* defined(CHIP_FAMILY_IT8XXX2) RISCV core */
ec_int = IT83XX_INTC_AIVCT - 0x10;
+ /* Unsupported EC INT number. */
+ if (chip_get_intc_group(ec_int) >= 16)
+ return -1;
#endif
return ec_int;
}