Ping-Ke Shih <pkshih@xxxxxxxxxxx> wrote:
> The early chips including RTL8852A, RTL8851B, RTL8852B and RTL8852BT have
> interoperability problems of 36-bit DMA with some PCI hosts. Rollback
> to 32-bit DMA by default, and only enable 36-bit DMA for tested platforms.
>
> Since all Intel platforms we have can work correctly, add the vendor ID to
> white list. Otherwise, list vendor/device ID of bridge we have tested.
>
> Fixes: 1fd4b3fe52ef ("wifi: rtw89: pci: support 36-bit PCI DMA address")
> Reported-by: Marcel Weißenbach <mweissenbach@xxxxxxxxx>
> Closes: https://lore.kernel.org/linux-wireless/20240918073237.Horde.VLueh0_KaiDw-9asEEcdM84@xxxxxxxxx/T/#m07c5694df1acb173a42e1a0bab7ac22bd231a2b8
> Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
> Tested-by: Marcel Weißenbach <mweissenbach@xxxxxxxxx>
Patch applied to wireless.git, thanks.
aa70ff0945fe wifi: rtw89: pci: early chips only enable 36-bit DMA on specific PCI hosts
--
https://patchwork.kernel.org/project/linux-wireless/patch/20240924021633.19861-1-pkshih@xxxxxxxxxxx/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
