The time the device takes to deassert its RDY output following an I2C stop condition scales with the core clock frequency.
To prevent level-triggered interrupts from being reasserted after the interrupt handler returns, increase the time before returning to account for the worst-case delay (~90 us) plus margin. Signed-off-by: Jeff LaBundy <[email protected]> Acked-for-MFD-by: Lee Jones <[email protected]> --- Changes in v2: - Added Acked-for-MFD-by trailer drivers/mfd/iqs62x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/iqs62x.c b/drivers/mfd/iqs62x.c index 7a1ff7c..07c9725 100644 --- a/drivers/mfd/iqs62x.c +++ b/drivers/mfd/iqs62x.c @@ -533,7 +533,7 @@ static irqreturn_t iqs62x_irq(int irq, void *context) * ensure the device's RDY output has been deasserted by the time the * interrupt handler returns. */ - usleep_range(50, 100); + usleep_range(150, 200); return IRQ_HANDLED; } -- 2.7.4
