Ming Lei wrote:
2010/2/2 Catalin Marinas <catalin.marinas@xxxxxxx>:+ if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) == PIPE_BULK) { + void *ptr; + for (ptr = urb->transfer_buffer; + ptr < urb->transfer_buffer + urb->transfer_buffer_length; + ptr += PAGE_SIZE) + flush_dcache_page(virt_to_page(ptr));If the page is mapped into highmem, seems virt_to_page doesn't work well.
This does not matter because this can not happen :). If the buffer is highmem then a bounce buffer is used. See commit 96983d2d8 aka "USB: storage: set bounce limit for non-DMA-capable host controllers" Sebastian -- 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
