Re: [alsa-devel] [PATCH V2 13/16] ALSA: HDA: Make hda sound card usable for Loongson.
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Huacai Chen wrote: > 1, Use 32-bit DMA as a workaround (Loongson has a hardware bug that it > doesn't support DMA address above 4GB). > 2, Modify patch_conexant.c to add Lemote specific code. Please create separate patches for these two changes. > +++ b/include/linux/pci_ids.h > @@ -2906,3 +2906,5 @@ > #define PCI_DEVICE_ID_XEN_PLATFORM 0x0001 > > #define PCI_VENDOR_ID_OCZ 0x1b85 > + > +#define PCI_VENDOR_ID_LEMOTE 0x1c06 AFAICS this symbol is not used in this patch. > +#ifdef CONFIG_CPU_LOONGSON3 > + /* Workaround: Loongson 3 doesn't support 64-bit DMA */ > + gcap &= ~ICH6_GCAP_64OK; > +#endif /* Workaround: Loongson 3 doesn't actually support 64-bit DMA */ Regards, Clemens
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