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authorDavid Dillow <dillowda@ornl.gov>2010-10-18 16:54:49 +0400
committerRoland Dreier <rolandd@cisco.com>2010-10-25 09:14:23 +0400
commit19081f31ce941a22bfc681d18ae2d31e31084df5 (patch)
treec544fc751f6e4fa056f8ad64e3700fc6c8caa787 /drivers/infiniband/ulp/srp
parent21c1a90769e680e7c1f49bae4c5804cf0c7bc814 (diff)
downloadlinux-19081f31ce941a22bfc681d18ae2d31e31084df5.tar.xz
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/ulp/srp')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c5
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;