On Fri, 8 Mar 2019, Oliver Neukum wrote: > On Fr, 2019-03-08 at 09:13 +0000, kento.a.kobaya...@sony.com wrote: > > The usb_reset_and_verify_device included in usb_reset_device fails > > with -ENODEV after power off hub port, and the -ENODEV error will > > be reported to uas_eh_bus_reset_handler and upper layer, so it > > doesn't need to do rebind if -ENODEV happens. > > Hi, > > no I am sorry, that is an assumption you just cannot make. > Anything can trigger a reset. That being SCSI is the common > case certainly, but not the only case. And in those cases > we cannot depend on upper layers doing the right thing, if > we just ignore an error. > > NACK > > Sorry > Oliver
Note that the reset routines in usb-storage do not make any exceptions for -ENODEV. Alan Stern
