staging: comedi: ni_labpc: migrate DMA channel init & free

Browse source

Migrate the code for requesting an ISA DMA channel and a DMA buffer, and
the code for freeing them into two new functions in the
"ni_labpc_isadma" module: `labpc_init_dma_chan()` and
`labpc_free_dma_chan()`.  Dummy inline functions are provided in
"ni_labpc_isadma.h" if the "ni_labpc_isadma" module is not being built.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Ian Abbott 2013-06-28 17:09:20 +01:00 • committed by Greg Kroah-Hartman

parent 9a6386623f

commit 86aff4bb11

3 changed files with 72 additions and 30 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

35

drivers/staging/comedi/drivers/ni_labpc.c

View file

54

drivers/staging/comedi/drivers/ni_labpc_isadma.c

View file

13

drivers/staging/comedi/drivers/ni_labpc_isadma.h

View file