[PATCH 3/5] i2c: aspeed: Mask IRQ status to relevant bits
From: Eddie James <eajames@linux.ibm.com>
Date: 2020-08-20 16:12:24
Also in:
linux-aspeed, linux-devicetree, linux-i2c, lkml
Subsystem:
arm/aspeed i2c driver, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Ryan Chen, Wolfram Sang, Andi Shyti, Linus Torvalds
Mask the IRQ status to only the bits that the driver checks. This prevents excessive driver warnings when operating in slave mode when additional bits are set that the driver doesn't handle. Signed-off-by: Eddie James <eajames@linux.ibm.com> --- drivers/i2c/busses/i2c-aspeed.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
index 31268074c422..abf40f2af8b4 100644
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c@@ -604,6 +604,7 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) writel(irq_received & ~ASPEED_I2CD_INTR_RX_DONE, bus->base + ASPEED_I2C_INTR_STS_REG); readl(bus->base + ASPEED_I2C_INTR_STS_REG); + irq_received &= 0xf000ffff; irq_remaining = irq_received; #if IS_ENABLED(CONFIG_I2C_SLAVE)
--
2.26.2