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| author | H Hartley Sweeten <hartleys@visionengravers.com> | 2012-06-12 00:45:15 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-12 18:14:33 (GMT) |
| commit | 2f0b9d082e5d0056a3aca4be038483a564849196 (patch) | |
| tree | 2353f9704467790c9dcc40537892fd4e6a363288 /drivers/staging/comedi/drivers.c | |
| parent | e34995148a2a305106c4f746fb76da23488c46c7 (diff) | |
| download | linux-fsl-qoriq-2f0b9d082e5d0056a3aca4be038483a564849196.tar.xz | |
staging: comedi: export alloc_subdevices as comedi_alloc_subdevices
Move the inline alloc_subdevices() function from comedidev.h
to drivers.c and rename it to comedi_alloc_subdevices(). The
function is large enough to warrant being an exported symbol
rather than being an inline in every driver.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers.c')
| -rw-r--r-- | drivers/staging/comedi/drivers.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c index 49e53ea..5413647 100644 --- a/drivers/staging/comedi/drivers.c +++ b/drivers/staging/comedi/drivers.c @@ -56,6 +56,27 @@ static int poll_invalid(struct comedi_device *dev, struct comedi_subdevice *s); struct comedi_driver *comedi_drivers; +int comedi_alloc_subdevices(struct comedi_device *dev, + unsigned int num_subdevices) +{ + unsigned i; + + dev->n_subdevices = num_subdevices; + dev->subdevices = + kcalloc(num_subdevices, sizeof(struct comedi_subdevice), + GFP_KERNEL); + if (!dev->subdevices) + return -ENOMEM; + for (i = 0; i < num_subdevices; ++i) { + dev->subdevices[i].device = dev; + dev->subdevices[i].async_dma_dir = DMA_NONE; + spin_lock_init(&dev->subdevices[i].spin_lock); + dev->subdevices[i].minor = -1; + } + return 0; +} +EXPORT_SYMBOL_GPL(comedi_alloc_subdevices); + static void cleanup_device(struct comedi_device *dev) { int i; |