ACK_INT_CLR_REG   186 drivers/mailbox/hi6220-mailbox.c 		writel(BIT(mchan->ack_irq), ACK_INT_CLR_REG(mbox->ipc));
ACK_INT_CLR_REG   328 drivers/mailbox/hi6220-mailbox.c 	writel(~0x0, ACK_INT_CLR_REG(mbox->ipc));