On Tue, 22 Apr 2014, Matthieu CASTET wrote:
> Yes, but we can ignore the first "Not-ready to ready change" event
> after resume.
>
> In fact after reset, we call usb_stor_reset_resume that do a
> scsi_report_bus_reset.
> This will set the flag expecting_cc_ua in scsi layer and the scsi layer
> wi
Le Fri, 18 Apr 2014 14:29:46 -0400,
Alan Stern a écrit :
> On Fri, 18 Apr 2014, Matthieu CASTET wrote:
>
> > "echo mem > /sys/power/state; cat /dev/sdx > /dev/null" works.
>
> I guess this works because the initial open of /dev/sdx swallows the
> media-changed notification.
Ok
>
> > > The d
On Fri, Apr 18, 2014 at 17:55 +0200, Matthieu CASTET wrote:
> Le Fri, 18 Apr 2014 10:42:14 -0400,
> Alan Stern a écrit :
> >
> > Since the SCSI layer thinks the media was changed, it has no choice but
> > to fail the read request.
> ok.
>
> I suppose the scsi layer can't ignore "Not-ready to re
On Fri, 18 Apr 2014, Matthieu CASTET wrote:
> > > while playing with suspend to ram I found a strange behavior with usb
> > > persistence.
> > >
> > > This can be easily reproduce by doing :
> > > - plug a usb key
> > > - start to read the usb key : "cat /dev/sdx > /dev/null"
> > > - go to suspen
Hi Alan,
thanks for your answers.
Le Fri, 18 Apr 2014 10:42:14 -0400,
Alan Stern a écrit :
> On Fri, 18 Apr 2014, Matthieu CASTET wrote:
>
> > Hi,
> >
> > while playing with suspend to ram I found a strange behavior with usb
> > persistence.
> >
> > This can be easily reproduce by doing :
>
On Fri, 18 Apr 2014, Matthieu CASTET wrote:
> Hi,
>
> while playing with suspend to ram I found a strange behavior with usb
> persistence.
>
> This can be easily reproduce by doing :
> - plug a usb key
> - start to read the usb key : "cat /dev/sdx > /dev/null"
> - go to suspend : "echo mem > /sy
Hi,
while playing with suspend to ram I found a strange behavior with usb
persistence.
This can be easily reproduce by doing :
- plug a usb key
- start to read the usb key : "cat /dev/sdx > /dev/null"
- go to suspend : "echo mem > /sys/power/state"
- while in suspend, unplug and replug the usb ke
