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Date:   Mon, 15 Apr 2019 10:35:53 +0200
From:   Arnd Bergmann <>
To:     Martin Schwidefsky <>,
        Heiko Carstens <>
        Nick Desaulniers <>,
        Nathan Chancellor <>,, Arnd Bergmann <>,
        Masahiro Yamada <>,
        Vasily Gorbik <>,
        Philipp Rudo <>,
        Tony Krowiak <>,
        Ursula Braun <>,
Subject: [PATCH v2 3/4] 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 <>
 arch/s390/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1a2eec61196d..25e0e7375166 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -188,7 +188,6 @@ config S390
 	select TTY
-	select VIRT_TO_BUS
 	select HAVE_NMI

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