From 19081f31ce941a22bfc681d18ae2d31e31084df5 Mon Sep 17 00:00:00 2001 From: David Dillow Date: Mon, 18 Oct 2010 08:54:49 -0400 Subject: [PATCH] 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 Signed-off-by: Roland Dreier --- drivers/infiniband/ulp/srp/ib_srp.c | 5 +++++ 1 file changed, 5 insertions(+) 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; -- 2.20.1