[PATCH] s390/cmf: Fix virtual vs physical address confusion

[Peter Oberparleiter <oberpar@linux.ibm.com>]

The measurement block address is an absolute address; therefore add a
missing virt_to_phys() translation.

Without this fix, a wrong address will be used by firmware when storing
extended format channel measurement data on kernels built with
CONFIG_RANDOMIZE_IDENTITY_BASE=y.

Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
---
 drivers/s390/cio/cmf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 92ab3d546fe4..5f57a12762d2 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -183,7 +183,7 @@ static int set_schib(struct ccw_device *cdev, u32 mme, int mbfc,
 	sch->config.mbfc = mbfc;
 	/* address can be either a block address or a block index */
 	if (mbfc)
-		sch->config.mba = address;
+		sch->config.mba = address ? virt_to_phys((void *)address) : 0;
 	else
 		sch->config.mbi = address;
 
-- 
2.53.0