On 2016-08-24 14:56:12 [+0000], Shevchenko, Andriy wrote: > Hi! Hi, > Today I discovered that runtime PM rather broken in 8250 _by design_. It > definitely requires irq_safe flag to be set in runtime PM. But that flag > demolishes an effort since it keeps parent (and thus all other devices > which parent needs to be on) always on. > > The question is is somebody is going to fix this and when? Why is it broken? As far as I remember the UART (on TI's beagle) can be shutdown. The result is that the first RX byte will wake up the board and loosing the first few bytes (depending the baud rate) until the clock is stable again. This was tested while I moved the PM bits from omap-serial to the 8250 version. Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
