[PATCH 07/15] mmc: sdhi: Enable driver compilation with COMPILE_TEST

[Laurent Pinchart]

This helps increasing build testing coverage.

The driver doesn't compile on (at least) x86 due (possibly among others)
to missing readsw/writesw I/O accessors, restrict compilation to SUPERH
or ARM.

Whether the CTL_DMA_ENABLE register is part of the standard TMIO
controller or is Renesas-specific is unknown and impossible to test as
we have no current or planned TMIO DMA users other than SUPERH and
ARCH_SHMOBILE. Writing to the register is thus conditionally compiled
for SUPERH and ARCH_SHMOBILE only. Adding ARCH_SHMOBILE_MULTI to the
list would extend this to multiarch kernels, but would break the driver
for non-shmobile platforms if the register is Renesas-specific. We can
thus get rid of the conditional compilation completely without
introducing any further issue, and let future non-Renesas users deal
with the situation if it turns out to be a the problem.

Cc: Chris Ball <cjb at laptop.org>
Cc: Guennadi Liakhovetski <g.liakhovetski at gmx.de>
Cc: Ian Molton <ian at mnementh.co.uk>
Cc: linux-mmc at vger.kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Acked-by: Simon Horman <horms at verge.net.au>
---
 drivers/mmc/host/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 7fc5099..ca1315e 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -479,7 +479,8 @@ config MMC_TMIO
 
 config MMC_SDHI
 	tristate "SH-Mobile SDHI SD/SDIO controller support"
-	depends on SUPERH || ARCH_SHMOBILE
+	depends on SUPERH || ARM
+	depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 	select MMC_TMIO_CORE
 	help
 	  This provides support for the SDHI SD/SDIO controller found in
-- 
1.8.3.2