Help with snd_card_set_dev

Help with snd_card_set_dev

[matthias.goerner]

What are "snd_card_set_dev" and "snd_card_set_generic_dev" good for?
I read the Writing ALSA drivers by Takashi Iwai but didn't understand the chapter on it. How can snd_card_set_dev be useful if it is ones passed a struct for PCI and then for ISA?

Matthias Goerner
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Re: Help with snd_card_set_dev

[Takashi Iwai]

At Mon, 02 Oct 2006 20:30:44 +0200,
matthias.goerner@gmx.net wrote:
> 
> What are "snd_card_set_dev" and "snd_card_set_generic_dev" good for?
> I read the Writing ALSA drivers by Takashi Iwai but didn't
> understand the chapter on it. How can snd_card_set_dev be useful if
> it is ones passed a struct for PCI and then for ISA? 

The driver core requires the struct device pointer for sysfs.
This is referred by HAL later and almost mandatory.

The snd_card_set_dev() macro is introduced just for the backward
compatibility with 2.2/2.4 kernels.  In the 2.6 kernels, it just do
	card->dev = &pci_dev->dev;

snd_card_set_generic_dev() is obsolete and no longer used.


Takashi

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