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(parent: bd304a7) | patch
staging: comedi: complain if dma buffer allocation not supported
authorIan Abbott <abbotti@mev.co.uk>
Fri, 10 May 2013 13:07:16 +0000 (14:07 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 13 May 2013 21:38:48 +0000 (17:38 -0400)
commite9166139f6f829c2e7bf6695f13e08d09303d6ca
treefedc60a4cc8493b508a3432d915c9f01b554b3f7tree | snapshot (tar.gz zip)
parentbd304a736afd99cc38bad4d1628e8e2d05d308d5commit | diff
staging: comedi: complain if dma buffer allocation not supported

When allocating a buffer to support asynchronous comedi commands, if a
DMA coherent buffer was requested but `CONFIG_HAS_DMA` is undefined,
bail out of local helper function `__comedi_buf_alloc()` with an error
message.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/comedi_buf.c diff | blob | blame | history