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s390: drop CONFIG_VIRT_TO_BUS 

VIRT_TO_BUS is only used for legacy device PCI and ISA drivers using
virt_to_bus() instead of the streaming DMA mapping API, and the
remaining drivers generally don't work on 64-bit architectures.

Two of these drivers also cause a build warning on s390, so instead
of trying to fix that, let's just disable the option as we do on
most architectures now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
hifive-unleashed-5.2
Arnd Bergmann 2019-04-15 10:35:53 +02:00 committed by Martin Schwidefsky
parent 96fb54a180
commit 964d06b4ed
1 changed files with 0 additions and 1 deletions
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arch/s390/Kconfig
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@ -189,7 +189,6 @@ config S390
select TTY
select VIRT_CPU_ACCOUNTING
select ARCH_HAS_SCALED_CPUTIME
select VIRT_TO_BUS
select HAVE_NMI