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path: root/drivers/s390/net/ism_drv.c
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Diffstat (limited to 'drivers/s390/net/ism_drv.c')
-rw-r--r--drivers/s390/net/ism_drv.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index ed8e58f09054..3e132592c1fe 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -141,10 +141,13 @@ static int register_ieq(struct ism_dev *ism)
static int unregister_sba(struct ism_dev *ism)
{
+ int ret;
+
if (!ism->sba)
return 0;
- if (ism_cmd_simple(ism, ISM_UNREG_SBA))
+ ret = ism_cmd_simple(ism, ISM_UNREG_SBA);
+ if (ret && ret != ISM_ERROR)
return -EIO;
dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
@@ -158,10 +161,13 @@ static int unregister_sba(struct ism_dev *ism)
static int unregister_ieq(struct ism_dev *ism)
{
+ int ret;
+
if (!ism->ieq)
return 0;
- if (ism_cmd_simple(ism, ISM_UNREG_IEQ))
+ ret = ism_cmd_simple(ism, ISM_UNREG_IEQ);
+ if (ret && ret != ISM_ERROR)
return -EIO;
dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
@@ -287,7 +293,7 @@ static int ism_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
cmd.request.dmb_tok = dmb->dmb_tok;
ret = ism_cmd(ism, &cmd);
- if (ret)
+ if (ret && ret != ISM_ERROR)
goto out;
ism_free_dmb(ism, dmb);