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. Priority: normal Signed-off-by: Nicola Soranzo <nsoranzo@xxxxxxxxxx> --- diff -r 80e785538796 -r ef8cc17cc048 linux/drivers/media/video/em28xx/em28xx-audio.c --- a/linux/drivers/media/video/em28xx/em28xx-audio.c Wed Feb 18 18:27:33 2009 +0100 +++ b/linux/drivers/media/video/em28xx/em28xx-audio.c Thu Feb 19 17:36:44 2009 +0100 @@ -560,6 +560,8 @@ 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"); -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
