Re: Stradis driver conflicts with all other SAA7146 drivers

Jiri Slaby
2006-05-28T20:28:48Z

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matthieu castet napsal(a):
> Jiri Slaby wrote:
>> Christer Weinigel napsal(a):
>>> Why not? There's an I2C bus with a bunch of devices on it. Isn't it
>>> possible to do an I2C scan and if it doesn't match what's supposed to
>>> be on the card fail the probe and release the PCI resources?
>>
>> This is an older method not used for device drivers, but only for
>> searching for
>> busses or i2c et al, of which drivers stands aside and controls the
>> device.
>>
>>> If there is no FPGA or the FPGA fails to respond, that should also be
>>> a fairly good indicator that it is not a stradis board.
>>
>> Yup, but pci probing doesn't have such mechanism.
> Hum ?
> The driver have to return an error (negative value) in the probbing
> function if it detect that the card fails to respond correctly.
I meant something other. Now it's clear, ignore that sentence in my reply,
please. Of course, there is a mechanism how driver can tell layers upwards it
can't drive the device.

regrads,
- --
Jiri Slaby www.fi.muni.cz/~xslaby
\_.-^-._ jirislaby@gmail.com _.-^-._/
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