[ALSA] Disable MPU401 on SIS7018

Trident driver
Disable MPU401 support on SIS7018 since it results in kernel freeze.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/sound/pci/trident/trident.c b/sound/pci/trident/trident.c
index 5d21cb811c8a..940d531575c0 100644
--- a/sound/pci/trident/trident.c
+++ b/sound/pci/trident/trident.c
@@ -143,7 +143,8 @@ static int __devinit snd_trident_probe(struct pci_dev *pci,
                         return err;
                 }
         }
-        if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_TRID4DWAVE,
+        if (trident->device != TRIDENT_DEVICE_ID_SI7018 &&
+            (err = snd_mpu401_uart_new(card, 0, MPU401_HW_TRID4DWAVE,
                                        trident->midi_port, 1,
                                        trident->irq, 0, &trident->rmidi)) < 0) {
                 snd_card_free(card);