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),
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