From: Andrew Morton <akpm@linux-foundation.org>

alpha:

drivers/dma/ioat_dca.c: In function 'dca_enabled_in_bios':                      drivers/dma/ioat_dca.c:71: error: implicit declaration of function 'cpuid_eax'
drivers/dma/ioat_dca.c: In function 'system_has_dca_enabled':                   drivers/dma/ioat_dca.c:81: error: implicit declaration of function 'boot_cpu_has'
drivers/dma/ioat_dca.c:177: error: implicit declaration of function 'cpu_physical_id'

Cc: "Nelson, Shannon" <shannon.nelson@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/dma/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/dma/Kconfig~dma-arch-fix drivers/dma/Kconfig
--- a/drivers/dma/Kconfig~dma-arch-fix
+++ a/drivers/dma/Kconfig
@@ -3,7 +3,7 @@
 #
 
 menu "DMA Engine support"
-	depends on HAS_DMA
+	depends on HAS_DMA && X86
 
 config DMA_ENGINE
 	bool "Support for DMA engines"
_