mailbox: sprd: mask interrupts that are not handled

75df94d0 · Otto Pflüger <[email protected]> · 2026-01-10 16:43:38 +01:00

To reduce the amount of spurious interrupts, disable the interrupts that
are not handled in this driver.

Signed-off-by: Otto Pflüger <[email protected]>
Signed-off-by: Jassi Brar <[email protected]>

Commit: 75df94d05fc03fd9d861eaf79ce10fbb7a548bd8
Parents: c6ff9440

Changes

1 files changed · +4 −6

File	Status	Add	Del	Content
drivers/mailbox/sprd-mailbox.c	modified	+4	−6	View file

drivers/mailbox/sprd-mailbox.c

View file

diff --git a/drivers/mailbox/sprd-mailbox.c b/drivers/mailbox/sprd-mailbox.c
index 2625658..5655029 100644
--- a/drivers/mailbox/sprd-mailbox.c
+++ b/drivers/mailbox/sprd-mailbox.c
@@ -282,21 +282,19 @@ 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);
 		}
 	}