On 09/08/2007 03:32 AM, James Roberts wrote:

I need to disable the creation of the ICEnsemble ICE1724 midi device on my system. I am using a off-brand card (see below) and accessing the midi device crashes the system hard.

I have explored udev rules, kernel opts, etc ad nauseum to do this.

To be clear I do not want to use the midi capabilities of the sound card at all, but want to keep the sound capabilities.

lspci: 00:09.0 Multimedia audio controller: VIA Technologies Inc. VT1720/24 [Envy24PT/HT] PCI Multi-Channel Audio Controller (rev 01)

amidi -l: Dir Device Name IO hw:0,0 ICEnsemble ICE1724 MIDI <- this must be gone forever! IO hw:1,0,0 BCF2000 MIDI 1 IO hw:1,0,1 BCF2000 MIDI 2 O hw:1,0,2 BCF2000 MIDI 3

It appears to get assigned to midiC0D0

Am I better off going the udev route and trying to somehow assign a null value somewhere or is there a way to prevent alsa from creating it?

Maybe an alias?

Sounds like this may warrent a module parameter. Trivial, untested version below, but this needs a module maintainer to decide if there may be better ways to discriminate. Crossposted to alsa-devel...

(against 2.6.22.x).

Rene.

diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c index ee620de..1d64dcc 100644 --- a/sound/pci/ice1712/ice1724.c +++ b/sound/pci/ice1712/ice1724.c @@ -75,6 +75,7 @@ static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ static char *model[SNDRV_CARDS]; +static int no_mpu401[SNDRV_CARDS];

module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for ICE1724 soundcard."); @@ -84,6 +85,8 @@ module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable ICE1724 soundcard."); module_param_array(model, charp, NULL, 0444); MODULE_PARM_DESC(model, "Use the given board model."); +module_param_array(no_mpu401, int, NULL, 0444); +MODULE_PARM_DESC(no_mpu401, "Mmf mmmff mmfmf mff mmfmmff.");

/* Both VT1720 and VT1724 have the same PCI IDs */ @@ -2398,7 +2401,7 @@ static int __devinit snd_vt1724_probe(struct pci_dev *pci, } }

- if (! c->no_mpu401) { + if (! c->no_mpu401 && ! no_mpu401[dev]) { if (ice->eeprom.data[ICE_EEP2_SYSCONF] & VT1724_CFG_MPU401) { if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ICE1712, ICEREG1724(ice, MPU_CTRL),