* 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? Regards, Tony -- 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
