riscv: only select GENERIC_IOREMAP if MMU support is enabled

nommu ioremap is an inline stub in asm-generic/io.h.

Link: https://lkml.kernel.org/r/20210825072036.GA29161@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 4f7b70a..8598e3d 100644 (file)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -48,7 +48,7 @@ config RISCV
        select GENERIC_CLOCKEVENTS_BROADCAST if SMP
        select GENERIC_EARLY_IOREMAP
        select GENERIC_GETTIMEOFDAY if HAVE_GENERIC_VDSO
-       select GENERIC_IOREMAP
+       select GENERIC_IOREMAP if MMU
        select GENERIC_IRQ_MULTI_HANDLER
        select GENERIC_IRQ_SHOW
        select GENERIC_LIB_DEVMEM_IS_ALLOWED