On Fri, Jul 31, 2015 at 01:55:08AM -0500, Peter E. Berger wrote: > From: "Peter E. Berger" <pberger@xxxxxxxxxxx> > > When using Edgeport/416 models with newer firmware (sometime after > firmware version 4.80.0), idle ports are automatically bounced > (disconnected and then reconnected) approximately every 60 seconds. > This breaks programs (e.g: minicom) where idle periods are common, > normal and expected. > > I confirmed with the manufacturer (Digi International) that Edgeport/416 > models now ship from the factory with firmware that expects periodic > "heartbeat" queries from the driver to keep idle ports alive. This > patch implements heartbeat support using the mechanism Digi suggested > (periodically requesting an I2C descriptor address) that appears effective > on Edgeports running the newer firmware (that require it) and benign on > Edgeport devices running older firmware. Since we know that Edgeport > firmware version 4.80 (the version distributed in /lib/firmware/down3.bin > and used for Edgeports that are either running still older versions or > have no onboard non-volatile firmware image) does not require heartbeat > support, this patch schedules heartbeats only on Edgeport/416 devices, > and only if they are running firmware versions newer than 4.80. > > Signed-off-by: Peter E. Berger <pberger@xxxxxxxxxxx> All now applied for 4.3 (this one with some really minor style changes). Thanks again for fixing this! Johan -- 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
