On Fri, Dec 15, 2023 at 03:12:10PM -0600, Yinghua Yang wrote: > New USB driver that sets power/control to autosuspend for Motorola > Solutions security accessories. The new driver only changes the power > control for specific USB devices, normal read/write/ioctl of the usb > device uses the unmodified usbfs. > > The rationale for a vendor specific driver was to allow for autosuspend > behavior on Linux installations that are battery powered and do not > allow user modifications to udev settings (e.g. embedded Linux, Android, > etc.). The idealistic generic approach that would allow any USB device > that supports autosuspend to change the power control could not be found > without a change to the USB standard or substantial change to the usbfs > architecture. > > Signed-off-by: Yinghua Yang <Yinghua.Yang@xxxxxxxxxxxxxxxxxxxxx> > --- It seems silly to write a kernel driver for this. Isn't there any way to handle it in userspace? All you would need is a simple shell script. Alan Stern
