diff mbox series

[v2,3/5] i2c: aspeed: Mask IRQ status to relevant bits

Message ID 20200908200101.64974-4-eajames@linux.ibm.com
State Accepted
Commit 1a1d6db23ddacde0b15ea589e9103373e05af8de
Headers show
Series input: misc: Add IBM Operation Panel driver | expand

Commit Message

Eddie James Sept. 8, 2020, 8 p.m. UTC 
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 | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
index 31268074c422..2a388911038a 100644
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c
@@ -69,6 +69,7 @@ 
  * These share bit definitions, so use the same values for the enable &
  * status bits.
  */
+#define ASPEED_I2CD_INTR_ALL				0xf000ffff
 #define ASPEED_I2CD_INTR_SDA_DL_TIMEOUT			BIT(14)
 #define ASPEED_I2CD_INTR_BUS_RECOVER_DONE		BIT(13)
 #define ASPEED_I2CD_INTR_SLAVE_MATCH			BIT(7)
@@ -604,6 +605,7 @@  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 &= ASPEED_I2CD_INTR_ALL;
 	irq_remaining = irq_received;
 
 #if IS_ENABLED(CONFIG_I2C_SLAVE)