On Mon, Jan 14, 2019 at 02:48:21PM +0100, Johan Hovold wrote: > On Mon, Jan 14, 2019 at 01:30:03PM +0100, Karoly Pados wrote: > > There is a bug in the current GPIO code for ftdi_sio: it failed to take USB > > autosuspend into account. If the device is in autosuspend, calls to > > usb_control_msg() fail with -EHOSTUNREACH. Because the standard value for > > autosuspend timeout is usually 2-5 seconds, this made it almost impossible > > to use the GPIOs on machines that have USB autosuspend enabled. This patch > > fixes the issue by acquiring a PM lock on the device for the duration of > > the USB transfers. Tested on an FT231X device. > > > > Signed-off-by: Karoly Pados <pados@xxxxxxxx> Do you intend to send a corresponding fix for cp210x as well? Thanks, Johan
