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dma-mapping: consolidate the NO_DMA definition in kernel/dma/Kconfig

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Have a single definition that architetures can select.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rich Felker <dalias@libc.org>
This commit is contained in:
Christoph Hellwig 2020-07-14 14:18:54 +02:00 committed by Rich Felker
parent bc0f46b1ca
commit 846f9e1fb9
4 changed files with 6 additions and 6 deletions
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4
arch/m68k/Kconfig
View File

@ -17,6 +17,7 @@ config M68K
select HAVE_COPY_THREAD_TLS
select GENERIC_IRQ_SHOW
select GENERIC_ATOMIC64
select NO_DMA if !MMU && !COLDFIRE
select HAVE_UID16
select VIRT_TO_BUS
select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
@ -60,9 +61,6 @@ config TIME_LOW_RES
config NO_IOPORT_MAP
def_bool y
config NO_DMA
def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
config ZONE_DMA
bool
default y

1
arch/m68k/Kconfig.machine
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@ -126,6 +126,7 @@ config SUN3
depends on MMU
depends on !MMU_MOTOROLA
select MMU_SUN3 if MMU
select NO_DMA
select M68020
help
This option enables support for the Sun 3 series of workstations

4
arch/um/Kconfig
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@ -15,6 +15,7 @@ config UML
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_BUGVERBOSE
select HAVE_COPY_THREAD_TLS
select NO_DMA
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
@ -168,9 +169,6 @@ config MMAPPER
This driver allows a host file to be used as emulated IO memory inside
UML.
config NO_DMA
def_bool y
config PGTABLE_LEVELS
int
default 3 if 3_LEVEL_PGTABLES

3
kernel/dma/Kconfig
View File

@ -1,5 +1,8 @@
# SPDX-License-Identifier: GPL-2.0-only
config NO_DMA
bool
config HAS_DMA
bool
depends on !NO_DMA