[PATCH 12/16] staging/comedi: mark as broken
gregkh at linuxfoundation.org
Fri Jun 14 14:02:39 UTC 2019
On Fri, Jun 14, 2019 at 03:47:22PM +0200, Christoph Hellwig wrote:
> comedi_buf.c abuse the DMA API in gravely broken ways, as it assumes it
> can call virt_to_page on the result, and the just remap it as uncached
> using vmap. Disable the driver until this API abuse has been fixed.
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> drivers/staging/comedi/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
> diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
> index 049b659fa6ad..e7c021d76cfa 100644
> --- a/drivers/staging/comedi/Kconfig
> +++ b/drivers/staging/comedi/Kconfig
> @@ -1,6 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0
> config COMEDI
> tristate "Data acquisition support (comedi)"
> + depends on BROKEN
Um, that's a huge sledgehammer.
Perhaps a hint as to how we can fix this up? This is the first time
I've heard of the comedi code not handling dma properly.
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