On Mon, 2010-10-25 at 15:11 +0100, Hin-Tak Leung wrote: > >> Despite the indicated intention in comment, the kmalloc() call was not > >> explicitly requesting memory from ZONE_DMA. > I had a quick look for similiar constructs and AFAIK only the b43/b43legacy > drivers uses DMA buffers. Seems to be a rare practice. Is that something we > should or should not do? I think there's some confusion here about ZONE_DMA vs. DMA-able memory. All memory you get with kmalloc can be used for DMA, GFP_DMA means using ZONE_DMA which is a hack for ISA (and in b43 maybe PCMCIA/Cardbus) devices to put memory into something they can address. I don't think the latter is necessary for USB devices. johannes -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
