Re: [PATCH] isp1760: Flush the D-cache for the pipe-in transfer buffers

[Ming Lei]

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.

-- 
Lei Ming
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