diff options
| author | Mitko Haralanov <mitko.haralanov@intel.com> | 2015-12-08 22:10:12 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-21 21:57:55 (GMT) |
| commit | 6a5464f2248594bcf92bd05beb341650f9e0f357 (patch) | |
| tree | f969ee1470b9817b267ddc4afa1890d9032f6584 /drivers/staging/rdma | |
| parent | faa98b862011a1ad92e66633220371fa3b799fc4 (diff) | |
| download | linux-6a5464f2248594bcf92bd05beb341650f9e0f357.tar.xz | |
staging/rdma/hfi1: Detect SDMA transmission error early
It is possible for an SDMA transmission error to happen
during the processing of an user SDMA transfer. In that
case it is better to detect it early and abort any further
attempts to send more packets.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/rdma')
| -rw-r--r-- | drivers/staging/rdma/hfi1/user_sdma.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/user_sdma.c b/drivers/staging/rdma/hfi1/user_sdma.c index d03c810..d3de771 100644 --- a/drivers/staging/rdma/hfi1/user_sdma.c +++ b/drivers/staging/rdma/hfi1/user_sdma.c @@ -774,6 +774,12 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts) pq = req->pq; + /* If tx completion has reported an error, we are done. */ + if (test_bit(SDMA_REQ_HAS_ERROR, &req->flags)) { + set_bit(SDMA_REQ_DONE_ERROR, &req->flags); + return -EFAULT; + } + /* * Check if we might have sent the entire request already */ |