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i2c: aspeed: Mask IRQ status to relevant bits 

[ Upstream commit 1a1d6db23d ]

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>
Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Eddie James 2020-09-09 15:30:57 -05:00 committed by Greg Kroah-Hartman
parent 66d987b80d
commit fdd60315b9
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/busses/i2c-aspeed.c
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@ -69,6 +69,7 @@
* These share bit definitions, so use the same values for the enable &
* status bits.
*/
#define ASPEED_I2CD_INTR_RECV_MASK 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_RECV_MASK;
irq_remaining = irq_received;
#if IS_ENABLED(CONFIG_I2C_SLAVE)