Re: [PATCH] dvb-usb-v2/gl861: fix wrong memcpy

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On 8/17/19 4:22 PM, Akihiro TSUKADA wrote:
Could you please test the patch and check if the return results are
now consistent and that it won't break anything?

I have tested the patch and it worked without problems.

Testd-by: Akihiro Tsukada <tskd08@xxxxxxxxx>

I could not noticed the bug because
the device was registered without any error messages,
and it seemed to work even with the bug.
(Though actually I was wrong and missed that
  the device does not work after reboot or re-plugging).

After applying this patch, I have confirmed that the device
now works after reboot/re-plugging without any problems.

note:
The patched func: gl861_i2c_read_ex was used in device's early init,
called from d->props->power_ctrl (from dvb_usbv2_init).
But dvb_usbv2_init does not check the return value of it,
and if the device had been initialized previously
it can work even with the interrupted init process in power_ctrl().


I suspect all whole friio_reset() function is not needed as it has worked even I/O has been broken.

Also tuner I2C adapter is implemented wrong (I think I mentioned that earlier). As tuner sits behind demod I2C-adapter/gate that whole logic should be on demod driver.

regards
Antti



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