linux/drivers/char/xillybus/Kconfig
Geert Uytterhoeven 45c554ece9 xillybus: XILLYBUS_OF should depend on HAS_DMA
If NO_DMA=y:

    drivers/built-in.o: In function `xilly_of_unmap':
    xillybus_of.c:(.text+0xa860e): undefined reference to `dma_unmap_single'
    drivers/built-in.o: In function `xilly_map_single_of':
    xillybus_of.c:(.text+0xa8668): undefined reference to `dma_map_single'
    xillybus_of.c:(.text+0xa8676): undefined reference to `dma_mapping_error'
    xillybus_of.c:(.text+0xa86ca): undefined reference to `dma_unmap_single'
    drivers/built-in.o: In function `xilly_dma_sync_single_for_device_of':
    xillybus_of.c:(.text+0xa8700): undefined reference to `dma_sync_single_for_cpu'
    drivers/built-in.o: In function `xilly_dma_sync_single_for_cpu_of':
    xillybus_of.c:(.text+0xa8726): undefined reference to `dma_sync_single_for_cpu'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Eli Billauer <eli.billauer@gmail.com>
--
v2:
  - Add Acked-by, send to char and misc drivers maintainers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24 12:24:35 -07:00

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#
# Xillybus devices
#
config XILLYBUS
tristate "Xillybus generic FPGA interface"
depends on PCI || (OF_ADDRESS && OF_IRQ)
select CRC32
help
Xillybus is a generic interface for peripherals designed on
programmable logic (FPGA). The driver probes the hardware for
its capabilities, and creates device files accordingly.
If unsure, say N.
if XILLYBUS
config XILLYBUS_PCIE
tristate "Xillybus over PCIe"
depends on PCI_MSI
help
Set to M if you want Xillybus to use PCI Express for communicating
with the FPGA.
config XILLYBUS_OF
tristate "Xillybus over Device Tree"
depends on OF_ADDRESS && OF_IRQ && HAS_DMA
help
Set to M if you want Xillybus to find its resources from the
Open Firmware Flattened Device Tree. If the target is an embedded
system, say M.
endif # if XILLYBUS