[dm-devel] [PATCH] dm-writecache: remove superfluous test

[Mikulas Patocka]

Remove superfluous test if dax_dev is NULL - dax_direct_access already
does this test.

Signed-off-by: Mikulas Patocka <mpatocka at redhat.com>

---
 drivers/md/dm-writecache.c |    4 ----
 1 file changed, 4 deletions(-)

Index: linux-2.6/drivers/md/dm-writecache.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-writecache.c	2020-04-17 14:06:35.129999000 +0200
+++ linux-2.6/drivers/md/dm-writecache.c	2020-04-17 16:02:54.339847000 +0200
@@ -234,10 +234,6 @@ static int persistent_memory_claim(struc
 
 	wc->memory_vmapped = false;
 
-	if (!wc->ssd_dev->dax_dev) {
-		r = -EOPNOTSUPP;
-		goto err1;
-	}
 	s = wc->memory_map_size;
 	p = s >> PAGE_SHIFT;
 	if (!p) {