diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-aspeed.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index c258c4d9a4c0..3d518e09369f 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -552,6 +552,9 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) spin_lock(&bus->lock); irq_received = readl(bus->base + ASPEED_I2C_INTR_STS_REG); + /* Ack all interrupts except for Rx done */ + writel(irq_received & ~ASPEED_I2CD_INTR_RX_DONE, + bus->base + ASPEED_I2C_INTR_STS_REG); irq_remaining = irq_received; #if IS_ENABLED(CONFIG_I2C_SLAVE) @@ -584,8 +587,10 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) "irq handled != irq. expected 0x%08x, but was 0x%08x\n", irq_received, irq_handled); - /* Ack all interrupt bits. */ - writel(irq_received, bus->base + ASPEED_I2C_INTR_STS_REG); + /* Ack Rx done */ + if (irq_received & ASPEED_I2CD_INTR_RX_DONE) + writel(ASPEED_I2CD_INTR_RX_DONE, + bus->base + ASPEED_I2C_INTR_STS_REG); spin_unlock(&bus->lock); return irq_remaining ? IRQ_NONE : IRQ_HANDLED; } |