ntb_hw_switchtec: make ntb_mw_set_trans() work when addr == 0

On switchtec_ntb_mw_set_trans() call, when (only) address == 0, it acts as
ntb_mw_clear_trans(). Fix this, since address == 0 and size != 0 is valid
combination for setting translation.

Signed-off-by: Alexander Fomichev <fomichev.ru@gmail.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
index f4959458d90967621919b6274814ef3c1befc244..86ffa716eaf22893f0727f8c0883c34dc97600cb 100644 (file)
--- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
+++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
@@ -306,7 +306,7 @@ static int switchtec_ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
        if (rc)
                return rc;
 
-       if (addr == 0 || size == 0) {
+       if (size == 0) {
                if (widx < nr_direct_mw)
                        switchtec_ntb_mw_clr_direct(sndev, widx);
                else