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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>
This commit is contained in:
David Dillow 2010-10-18 08:54:49 -04:00 committed by Roland Dreier
parent 21c1a90769
commit 19081f31ce
1 changed files with 5 additions and 0 deletions
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5
drivers/infiniband/ulp/srp/ib_srp.c
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@ -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, static int srp_send_tsk_mgmt(struct srp_target_port *target,
struct srp_request *req, u8 func) struct srp_request *req, u8 func)
{ {
struct ib_device *dev = target->srp_host->srp_dev->dev;
struct srp_iu *iu; struct srp_iu *iu;
struct srp_tsk_mgmt *tsk_mgmt; struct srp_tsk_mgmt *tsk_mgmt;
@ -1459,6 +1460,8 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target,
if (!iu) if (!iu)
goto out; goto out;
ib_dma_sync_single_for_cpu(dev, iu->dma, sizeof *tsk_mgmt,
DMA_TO_DEVICE);
tsk_mgmt = iu->buf; tsk_mgmt = iu->buf;
memset(tsk_mgmt, 0, sizeof *tsk_mgmt); 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->tsk_mgmt_func = func;
tsk_mgmt->task_tag = req->index; 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)) if (__srp_post_send(target, iu, sizeof *tsk_mgmt))
goto out; goto out;