Re: [patch] ess maestro, support for hardware volume control

[Lukas Schroeder <lukas@edeal.de>]

the little patch below (vs. 2.4.5-ac13) fixes a freeze which happens
when the maestro module was unloaded and a HWV button gets pushed 
generating the interrupt. so this disables all irqs of that chip 
on remove...


regards,
  lukas

--- linux-2.4.5-ac13/drivers/sound/maestro.c    Tue Jun 12 13:41:24 2001
+++ linux/drivers/sound/maestro.c       Tue Jun 12 14:13:40 2001
@@ -3575,6 +3575,12 @@
        struct ess_card *card = pci_get_drvdata(pcidev);
        int i;
 
+       /* turn off all irqs; _especially_ the one for hardware volume
+          control (bit 6), which locks the machine dead when occurring after
+          the maestro module was removed.
+        */
+       outw(0x0, card->iobase+0x18);
+
        /* XXX maybe should force stop bob, but should be all 
                stopped by _release by now */
        free_irq(card->irq, card);