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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2016-10-22 01:01:21 +0300
committerDoug Ledford <dledford@redhat.com>2016-12-14 12:51:31 -0500
commitdef4a6ffc9d178d6bb14178f56873c4831fb05a7 (patch)
treef27046ccce27cbcbbfdb0c7132e58cf7ea1552de /drivers/infiniband/ulp/isert
parent35493294df1a1b06268a4e7b77b7a323772779f3 (diff)
IB/isert: do not ignore errors in dma_map_single()
There are several places, where errors in dma_map_single() are ignored. The patch fixes them. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/isert')
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 6dd43f63238e..f0ba5f83b02c 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1851,6 +1851,8 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
(void *)cmd->sense_buffer, pdu_len,
DMA_TO_DEVICE);
+ if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+ return -ENOMEM;
isert_cmd->pdu_buf_len = pdu_len;
tx_dsg->addr = isert_cmd->pdu_buf_dma;
@@ -1978,6 +1980,8 @@ isert_put_reject(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
(void *)cmd->buf_ptr, ISCSI_HDR_LEN,
DMA_TO_DEVICE);
+ if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+ return -ENOMEM;
isert_cmd->pdu_buf_len = ISCSI_HDR_LEN;
tx_dsg->addr = isert_cmd->pdu_buf_dma;
tx_dsg->length = ISCSI_HDR_LEN;
@@ -2018,6 +2022,8 @@ isert_put_text_rsp(struct iscsi_cmd *cmd, struct iscsi_conn *conn)
isert_cmd->pdu_buf_dma = ib_dma_map_single(ib_dev,
txt_rsp_buf, txt_rsp_len, DMA_TO_DEVICE);
+ if (ib_dma_mapping_error(ib_dev, isert_cmd->pdu_buf_dma))
+ return -ENOMEM;
isert_cmd->pdu_buf_len = txt_rsp_len;
tx_dsg->addr = isert_cmd->pdu_buf_dma;