forked from Minki/linux
4efc4bbdc1
The core "comedi" module and the "mite" helper module for NI PCI devices
both have calls to `dma_alloc_coherent()` and `dma_free_coherent()`.
Those functions are only available if `CONFIG_HAS_DMA` is defined.
Apart from the "mite" module, the functions are only called for comedi
drivers that set `s->async_dma_dir` (where `s` is a pointer to a `struct
comedi_subdevice`) to anything other than `DMA_NONE`.
Change local helper functions `__comedi_buf_alloc()` and
`__comedi_buf_free()` to only call `dma_alloc_coherent()` and
`dma_free_coherent()` if `CONFIG_HAS_DMA` is defined.
Change the "Kconfig" to make the following configuration options depend
on `HAS_DMA`:
`COMEDI_MITE` - builds the "mite" module.
`COMEDI_NI_6527` - selects `COMEDI_MITE`.
`COMEDI_NI_65XX` - selects `COMEDI_MITE`.
`COMEDI_NI_670X` - selects `COMEDI_MITE`.
`COMEDI_NI_LABPC_PCI` - selects `COMEDI_MITE`.
`COMEDI_NI_PCIDIO` - selects `COMEDI_MITE`.
`COMEDI_NI_TIOCMD` - selects `COMEDI_MITE`.
`COMEDI_NI_660X` - selects `COMEDI_NI_TIOCMD`,
sets `s->async_dma_dir`.
`COMEDI_NI_PCIMIO` - selects `COMEDI_NI_TIOCMD`,
sets `s->async_dma_dir`.
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>
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| .. | ||
| android | ||
| asus_oled | ||
| bcm | ||
| ced1401 | ||
| comedi | ||
| cptm1217 | ||
| crystalhd | ||
| csr | ||
| cxt1e1 | ||
| dgrp | ||
| dwc2 | ||
| echo | ||
| et131x | ||
| frontier | ||
| ft1000 | ||
| fwserial | ||
| gdm72xx | ||
| goldfish | ||
| iio | ||
| imx-drm | ||
| keucr | ||
| line6 | ||
| media | ||
| netlogic | ||
| nvec | ||
| octeon | ||
| olpc_dcon | ||
| ozwpan | ||
| panel | ||
| phison | ||
| quickstart | ||
| rtl8187se | ||
| rtl8192e | ||
| rtl8192u | ||
| rtl8712 | ||
| rts5139 | ||
| sb105x | ||
| sbe-2t3e3 | ||
| sep | ||
| serqt_usb2 | ||
| silicom | ||
| slicoss | ||
| sm7xxfb | ||
| speakup | ||
| ste_rmi4 | ||
| ti-soc-thermal | ||
| tidspbridge | ||
| usbip | ||
| vme | ||
| vt6655 | ||
| vt6656 | ||
| winbond | ||
| wlags49_h2 | ||
| wlags49_h25 | ||
| wlan-ng | ||
| xgifb | ||
| zcache | ||
| zram | ||
| zsmalloc | ||
| Kconfig | ||
| Makefile | ||
| staging.c | ||