diff --git a/drivers/mailbox/qcom-cpucp-mbox.c b/drivers/mailbox/qcom-cpucp-mbox.c
index 515d2d12c01b..b88ea2527265 100644
--- a/drivers/mailbox/qcom-cpucp-mbox.c
+++ b/drivers/mailbox/qcom-cpucp-mbox.c
@@ -61,7 +61,7 @@ static irqreturn_t qcom_cpucp_mbox_irq_fn(int irq, void *data)
 	status = readq(cpucp->rx_base + APSS_CPUCP_RX_MBOX_STAT);
 
 	for_each_set_bit(i, (unsigned long *)&status, cpucp->mbox.num_chans) {
-		u32 val = readl(cpucp->rx_base + APSS_CPUCP_RX_MBOX_CMD(i) + APSS_CPUCP_MBOX_CMD_OFF);
+		u64 val = readq(cpucp->rx_base + APSS_CPUCP_RX_MBOX_CMD(i));
 		struct mbox_chan *chan = &cpucp->chans[i];
 		struct mbox_client *cl;
 		unsigned long flags;