[PATCH 6.19 356/844] mailbox: sprd: mask interrupts that are not handled
From: Sasha Levin
Date: Sat Feb 28 2026 - 15:01:13 EST
From: Otto Pflüger <otto.pflueger@xxxxxxxxx>
[ Upstream commit 75df94d05fc03fd9d861eaf79ce10fbb7a548bd8 ]
To reduce the amount of spurious interrupts, disable the interrupts that
are not handled in this driver.
Signed-off-by: Otto Pflüger <otto.pflueger@xxxxxxxxx>
Signed-off-by: Jassi Brar <jassisinghbrar@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/mailbox/sprd-mailbox.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/mailbox/sprd-mailbox.c b/drivers/mailbox/sprd-mailbox.c
index ee8539dfcef54..c1a5fe6cc8771 100644
--- a/drivers/mailbox/sprd-mailbox.c
+++ b/drivers/mailbox/sprd-mailbox.c
@@ -243,21 +243,19 @@ static int sprd_mbox_startup(struct mbox_chan *chan)
/* Select outbox FIFO mode and reset the outbox FIFO status */
writel(0x0, priv->outbox_base + SPRD_MBOX_FIFO_RST);
- /* Enable inbox FIFO overflow and delivery interrupt */
- val = readl(priv->inbox_base + SPRD_MBOX_IRQ_MSK);
- val &= ~(SPRD_INBOX_FIFO_OVERFLOW_IRQ | SPRD_INBOX_FIFO_DELIVER_IRQ);
+ /* Enable inbox FIFO delivery interrupt */
+ val = SPRD_INBOX_FIFO_IRQ_MASK;
+ val &= ~SPRD_INBOX_FIFO_DELIVER_IRQ;
writel(val, priv->inbox_base + SPRD_MBOX_IRQ_MSK);
/* Enable outbox FIFO not empty interrupt */
- val = readl(priv->outbox_base + SPRD_MBOX_IRQ_MSK);
+ val = SPRD_OUTBOX_FIFO_IRQ_MASK;
val &= ~SPRD_OUTBOX_FIFO_NOT_EMPTY_IRQ;
writel(val, priv->outbox_base + SPRD_MBOX_IRQ_MSK);
/* Enable supplementary outbox as the fundamental one */
if (priv->supp_base) {
writel(0x0, priv->supp_base + SPRD_MBOX_FIFO_RST);
- val = readl(priv->supp_base + SPRD_MBOX_IRQ_MSK);
- val &= ~SPRD_OUTBOX_FIFO_NOT_EMPTY_IRQ;
writel(val, priv->supp_base + SPRD_MBOX_IRQ_MSK);
}
}
--
2.51.0