On Tue, 20 Sep 2016, Ritesh Raj Sarraf wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > Hello Alan, > > On Tue, 2016-09-20 at 10:16 -0400, Alan Stern wrote: > > This is a lot better. No more I/O errors. > > > > We still have irregular suspends and resumes, but that's to be > > expected. More worrying are the spontaneous disconnects. They don't > > seem to be related to the suspend/resume activity. > > > > You can disable suspend for this device entirely by doing: > > > > echo on >/sys/bus/usb/devices/2-4/power/control > > > > Yes. But that'd also mean to write that value upon every suspend/resume cycle > because the rtsx usb driver still declares support for autosuspend. > Should that be dropped ? No, the value doesn't change across a suspend/resume cycle. > > I'm afraid that this won't prevent the device from disconnecting > > itself, though. This appears to be some sort of hardware bug that > > can't be fixed in software. > > And that'd mean that upon every reset, the driver will again enable autosuspend > for that driver. Yes, that's true. I'm curious to see if preventing autosuspends will get rid of the resets. My guess is that it won't. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
