Re: [2.4]ALi M5451 sound hangs on init; workaround

From: Alan Cox (
Date: Wed Dec 11 2002 - 11:48:18 EST

On Wed, 2002-12-11 at 15:15, Fedor Karpelevitch wrote:
> I have ALi M5451 souncard in my laptop (Compaq Presario 900z for those
> searching) and it hangs the machine with any kernel I tried
> (currently 2.4.20-ac1 + hirofumi patch). I traced it down to the line
> where it hangs - that is drivers/sound/trident.c:3379 which says:
> pci_write_config_byte(pci_dev, 0xB8, ~temp);

Looking at the docs it looks like the code Matt Wu added may have
been meant to do

        pci_read_config_byte(pci_dev, 0x59, temp)
        temp &= ~0x80

and similarly for the other port

(Ditto with fixing setup_multi_cannnels)

Does it work sanely with those fixd ?

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