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V4L/DVB (10659): em28xx: register device to soundcard for sysfs 

As explained in "Writing an ALSA driver" (T. Iwai), audio drivers should
set the struct device for the card before registering the card instance.
This will add the correct /sys/class/sound/cardN/device symlink, so HAL
can see the device and ConsoleKit sets its ACL permissions for the
logged-in user.

For em28xx audio capture cards found e.g. in Hauppauge WinTV-HVR-900 (R2),
this patch fixes errors like:

ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card
Error opening audio: Permission denied

when running mplayer as a normal user.

Signed-off-by: Nicola Soranzo <nsoranzo@tiscali.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Nicola Soranzo 2009-02-19 13:41:56 -03:00 committed by Mauro Carvalho Chehab
parent 169d418b12
commit 7662b00c37
1 changed files with 2 additions and 0 deletions
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2
drivers/media/video/em28xx/em28xx-audio.c
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@ -463,6 +463,8 @@ static int em28xx_audio_init(struct em28xx *dev)
pcm->info_flags = 0;
pcm->private_data = dev;
strcpy(pcm->name, "Empia 28xx Capture");
snd_card_set_dev(card, &dev->udev->dev);
strcpy(card->driver, "Empia Em28xx Audio");
strcpy(card->shortname, "Em28xx Audio");
strcpy(card->longname, "Empia Em28xx Audio");