ALSA: cmi8330: Allow MPU-401-less operation

Adding MPU-401 support to cmi8330 driver could cause a regression (non-working
sound) on a system where there is no free IRQ for the MPU-401 device (which
is not very uncommon as this card requires two separate IRQs plus a third one
for MPU-401).

When MPU-401 PnP configuration fails (mostly because of unavailable IRQ), just
ignore MPU-401 and continue without it.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/isa/cmi8330.c b/sound/isa/cmi8330.c
index f7acb8dac185608fe6b2b707e4efbd4dd4e55e2c..02f79d2527189813d62a114f804f8400488f197b 100644 (file)
--- a/sound/isa/cmi8330.c
+++ b/sound/isa/cmi8330.c
@@ -389,12 +389,12 @@ static int __devinit snd_cmi8330_pnp(int dev, struct snd_cmi8330 *acard,
        pdev = acard->mpu;
 
        err = pnp_activate_dev(pdev);
-       if (err < 0) {
-               snd_printk(KERN_ERR "MPU-401 PnP configure failure\n");
-               return -EBUSY;
+       if (err < 0)
+               snd_printk(KERN_ERR "MPU-401 PnP configure failure: will be disabled\n");
+       else {
+               mpuport[dev] = pnp_port_start(pdev, 0);
+               mpuirq[dev] = pnp_irq(pdev, 0);
        }
-       mpuport[dev] = pnp_port_start(pdev, 0);
-       mpuirq[dev] = pnp_irq(pdev, 0);
        return 0;
 }
 #endif