From: Rask Ingemann Lambertsen <rask@xxxxxxxxxx>
The ad1816a driver fails if the mpu401 driver has been loaded first. This
patch against linux 2.6.20 fixes it by just ignoring the MPU-401 device in
that case, so that the rest of the sound card can be used. The ad1816a
driver already handles the MPU-401 device being unavailable due to lack of
resources in the same way.
Signed-off-by: Rask Ingemann Lambertsen <rask@xxxxxxxxxx>
---
Another way of fixing the failure would be to remove the MPU-401 related
code from the ad1816a driver, so the MPU-401 device is always handled by the
mpu401 driver. I'll write such a patch if you think that's better.
--- linux-2.6.20/sound/isa/ad1816a/ad1816a.c-orig 2007-02-04 19:44:54.000000000 +0100
+++ linux-2.6.20/sound/isa/ad1816a/ad1816a.c 2007-03-18 18:28:20.000000000 +0100
@@ -129,8 +129,8 @@ static int __devinit snd_card_ad1816a_pn
}
acard->devmpu = pnp_request_card_device(card, id->devs[1].id, NULL);
if (acard->devmpu == NULL) {
- kfree(cfg);
- return -EBUSY;
+ mpu_port[dev] = -1;
+ snd_printk(KERN_WARNING PFX "MPU401 device busy, skipping.\n");
}
pdev = acard->dev;
@@ -162,6 +162,10 @@ static int __devinit snd_card_ad1816a_pn
dma2[dev] = pnp_dma(pdev, 1);
irq[dev] = pnp_irq(pdev, 0);
+ if (acard->devmpu == NULL) {
+ kfree(cfg);
+ return 0;
+ }
pdev = acard->devmpu;
pnp_init_resource_table(cfg);
--
Rask Ingemann Lambertsen
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