Re: [PATCH 0/6] some fixes and cleanups for the em28xx-based HVR-930C

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Em Tue, 30 Sep 2014 09:38:10 +0200
Johannes Stezenbach <js@xxxxxxxxxxx> escreveu:

> On Mon, Sep 29, 2014 at 08:44:28PM +0200, Johannes Stezenbach wrote:
> > On Mon, Sep 29, 2014 at 03:30:18PM -0300, Mauro Carvalho Chehab wrote:
> > > Em Mon, 29 Sep 2014 19:44:30 +0200
> > > Johannes Stezenbach <js@xxxxxxxxxxx> escreveu:
> > > 
> > > > Disregarding your mails from the "em28xx breaks after hibernate"
> > > > that hibernate doesn't work for you, I decided to give these
> > > > changes a try on top of today's media_tree.git
> > > > (cf3167c -> 3.17.0-rc5-00741-g9a3fbd8), still inside qemu
> > > > (can't upgrade/reboot my main machine right now).
> > > 
> > > Well, I think I was not clear: It doesn't work for me when 
> > > I power down the USB or the machine after suspended. If I keep
> > > the device energized, it works ;)
> > 
> > Ah, OK.  I'll try to test with power removed tomorrow.
> 
> I test again in qemu, but this time rmmod and blacklist em28xx
> on the host, and unplug HVR-930C during hibernate.  As you
> said, it breaks.  Log fter resume:
> 
> [   83.308267] usb 1-1: reset high-speed USB device number 2 using ehci-pci
> [   83.598182] em2884 #0: Resuming extensions
> [   83.599187] em2884 #0: Resuming video extensionem2884 #0: Resuming DVB extension
> [   83.604115] xc5000: I2C read failed
> [   83.607091] xc5000: I2C write failed (len=3)
> [   83.607985] xc5000: firmware upload failed...
> [   83.608766]  - too many retries. Giving up
> [   83.609553] em2884 #0: fe0 resume -22
> [   83.615533] PM: restore of devices complete after 937.567 msecs
> [   83.617278] PM: Image restored successfully.
> [   83.618262] PM: Basic memory bitmaps freed
> [   83.619097] Restarting tasks ... done.
> [   83.622320] xc5000: I2C read failed
> [   83.623197] xc5000: I2C write failed (len=3)
> [   83.623198] xc5000: firmware upload failed...
> [   83.623198]  - too many retries. Giving up
> [   83.624071] drxk: i2c read error at addr 0x29
> [   83.624072] drxk: Error -6 on mpegts_stop
> [   83.624073] drxk: Error -6 on start
> [   84.621531] drxk: i2c read error at addr 0x29
> [   84.623426] drxk: Error -6 on get_dvbt_lock_status
> [   84.625477] drxk: Error -6 on get_lock_status

Yeah, this is what I was expecting. I have already a patch that would fix
the issue with xc5000 (the issue is actually at em28xx, that needs to do
a full initialization of the device), but something else is needed to put
drxk into a reliable state.

I am traveling during this week (without the HVR-930C or RF generators).
So, I can't touch on it. I'll seek for some time to try to fix this issue. 

Regards,
Mauro
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