diff options
-rw-r--r-- | drivers/mfd/twl6030-irq.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c index c6b456a..aa367a2 100644 --- a/drivers/mfd/twl6030-irq.c +++ b/drivers/mfd/twl6030-irq.c @@ -185,8 +185,17 @@ static int twl6030_irq_thread(void *data) } local_irq_enable(); } - ret = twl_i2c_write(TWL_MODULE_PIH, sts.bytes, - REG_INT_STS_A, 3); /* clear INT_STS_A */ + + /* + * NOTE: + * Simulation confirms that documentation is wrong w.r.t the + * interrupt status clear operation. A single *byte* write to + * any one of STS_A to STS_C register results in all three + * STS registers being reset. Since it does not matter which + * value is written, all three registers are cleared on a + * single byte write, so we just use 0x0 to clear. + */ + ret = twl_i2c_write_u8(TWL_MODULE_PIH, 0x00, REG_INT_STS_A); if (ret) pr_warning("twl6030: I2C error in clearing PIH ISR\n"); |