[PATCH, RFC 18/22] Xen: SWIOTLB is only used on x86

[Arnd Bergmann]

Enabling SWIOTLB_XEN on ARM results in build errors because the
underlying SWIOTLB is only available on X86:

drivers/xen/swiotlb-xen.c: In function 'is_xen_swiotlb_buffer':
drivers/xen/swiotlb-xen.c:105:2: error: implicit declaration of function 'mfn_to_local_pfn

Cc: Konrad Rzeszutek Wilk <konrad.wilk at oracle.com>
Cc: Stefano Stabellini <stefano.stabellini at eu.citrix.com>
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 drivers/xen/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index dd4d9cb..f03bf50 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -141,7 +141,7 @@ config XEN_GRANT_DEV_ALLOC
 
 config SWIOTLB_XEN
 	def_bool y
-	depends on PCI
+	depends on PCI && X86
 	select SWIOTLB
 
 config XEN_TMEM
-- 
1.8.1.2