diff options
| author | David Dillow <dillowda@ornl.gov> | 2010-10-18 08:54:49 -0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-10-24 22:14:23 -0700 |
| commit | 19081f31ce941a22bfc681d18ae2d31e31084df5 (patch) | |
| tree | c544fc751f6e4fa056f8ad64e3700fc6c8caa787 /drivers/infiniband | |
| parent | 21c1a90769e680e7c1f49bae4c5804cf0c7bc814 (diff) | |
| download | lwn-19081f31ce941a22bfc681d18ae2d31e31084df5.tar.gz lwn-19081f31ce941a22bfc681d18ae2d31e31084df5.zip | |
IB/srp: Sync buffer before posting send
srp_send_tsk_mgmt() was missing the proper DMA sync calls before posting
the buffer to the device.
Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 9b4bc5ae5b10..cfc1d65c4577 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1442,6 +1442,7 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event) static int srp_send_tsk_mgmt(struct srp_target_port *target, struct srp_request *req, u8 func) { + struct ib_device *dev = target->srp_host->srp_dev->dev; struct srp_iu *iu; struct srp_tsk_mgmt *tsk_mgmt; @@ -1459,6 +1460,8 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target, if (!iu) goto out; + ib_dma_sync_single_for_cpu(dev, iu->dma, sizeof *tsk_mgmt, + DMA_TO_DEVICE); tsk_mgmt = iu->buf; memset(tsk_mgmt, 0, sizeof *tsk_mgmt); @@ -1468,6 +1471,8 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target, tsk_mgmt->tsk_mgmt_func = func; tsk_mgmt->task_tag = req->index; + ib_dma_sync_single_for_device(dev, iu->dma, sizeof *tsk_mgmt, + DMA_TO_DEVICE); if (__srp_post_send(target, iu, sizeof *tsk_mgmt)) goto out; |