> Which is exactly what usb_buffer_alloc() does already. So at least for > x86 you say this is the right thing to do? However, we don't necessarily > need coherent memory on other platforms, which is why I hessitate to > enforce that type of memory for all transfer_buffer allocations. Yes today it's faster at least. Probably we should have better interfaces for this, but we don't. > > > Or just use GFP_KERNEL and pci_map_* later. > > The USB core does this already, but at least on Pedro's machine, this > seems unsufficient. Unfortunately, I can't reproduce the issue yet, even > with more than 4GB of RAM installed. Then something must be broken in Pedro's system and likely other drivers will also not work. I don't think it should be worked around in the USB layer. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
