On 28/01/15 19:09, Tony Lindgren wrote: > * Roger Quadros <rogerq@xxxxxx> [150128 04:15]: >> On 28/01/15 04:19, Chanwoo Choi wrote: >>>> >>>> I still fail to understand that we need to call disable_irq() in .suspend() and >>>> enable_irq() in .resume() >>>> >>>> can you point me to any other drivers doing so? >>> >>> You can refer the suspend function in drivers/mfd/max14577.c or drivers/mfd/max77693.c. >>> The max14577_suspend() includes the detailed comment for why using disable_irq() in suspend function. >>> >>> In max14577 case, max14577_suspend() use disable_irq() function because of i2c dependency. >>> If max14577 device is wake-up from suspend state before completing the resume sequence >>> of i2c, max14577 may fail to read/write i2c communication. >> >> Thanks for this information. I will add disable/enable_irq() in suspend/resume(). > > Are the .dts changes safe for me to apply already? > Yes Tony, you can pick them. Thanks. cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
