From 75df94d05fc03fd9d861eaf79ce10fbb7a548bd8 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Otto=20Pfl=C3=BCger?= Date: Sat, 10 Jan 2026 16:43:38 +0100 Subject: [PATCH] mailbox: sprd: mask interrupts that are not handled MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit To reduce the amount of spurious interrupts, disable the interrupts that are not handled in this driver. Signed-off-by: Otto Pflüger Signed-off-by: Jassi Brar --- 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 26256581a76a..565502904e1f 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); } } -- 2.47.3