diff options
| author |   Ian Abbott <abbotti@mev.co.uk> | 2013-06-28 17:09:21 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 14:27:51 -0700 |
| commit | c6208c2f358056d77544024373e9d73dd899a384 (patch) | |
| tree | 602caf48d0bf5b5b92d3a5b856714958b3751b7f /kernel/debug/debug_core.c | |
| parent | staging: comedi: ni_labpc: migrate DMA channel init & free (diff) | |
staging: comedi: ni_labpc_isadma: add labpc_have_dma_chan()
Add a static inline function to "ni_labpc_isadma.h" to test if a DMA
channel has been set-up, in which case `devpriv->dma_chan` will be
non-zero (where `devpriv` point to the private data for the comedi
device). If the "ni_labpc_isadma" module is not being built, don't
bother checking `devpriv->dma_chan`; just return `false` as this may
help the compiler to optimize out some unreachable code.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/debug/debug_core.c')
0 files changed, 0 insertions, 0 deletions