Merge branch 'merge' into next

Merge my own merge branch to get various fixes from there
and upstream, especially the hvc console tty refcouting fixes
which which testing is quite a bit harder...

4 files changed, 52 insertions, 55 deletions

diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 57e07c6..afd8179 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -468,7 +468,7 @@ struct ib_mr *c4iw_register_phys_mem(struct ib_pd *pd,
 	ret = alloc_pbl(mhp, npages);
 	if (ret) {
 		kfree(page_list);
-		goto err_pbl;
+		goto err;
 	}
 
 	ret = write_pbl(&mhp->rhp->rdev, page_list, mhp->attr.pbl_addr,
diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index d2fb38d..2f215b9 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -107,7 +107,7 @@ static __be64 get_cached_alias_guid(struct mlx4_ib_dev *dev, int port, int index
 {
 	if (index >= NUM_ALIAS_GUID_PER_PORT) {
 		pr_err("%s: ERROR: asked for index:%d\n", __func__, index);
-		return  (__force __be64) ((u64) 0xFFFFFFFFFFFFFFFFUL);
+		return (__force __be64) -1;
 	}
 	return *(__be64 *)&dev->sriov.demux[port - 1].guid_cache[index];
 }
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 21a7941..0a903c1 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -409,38 +409,45 @@ int mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid)
 }
 
 
-static int get_pkey_phys_indices(struct mlx4_ib_dev *ibdev, u8 port, u8 ph_pkey_ix,
-				 u8 *full_pk_ix, u8 *partial_pk_ix,
-				 int *is_full_member)
+static int find_slave_port_pkey_ix(struct mlx4_ib_dev *dev, int slave,
+				   u8 port, u16 pkey, u16 *ix)
 {
-	u16 search_pkey;
-	int fm;
-	int err = 0;
-	u16 pk;
+	int i, ret;
+	u8 unassigned_pkey_ix, pkey_ix, partial_ix = 0xFF;
+	u16 slot_pkey;
 
-	err = ib_get_cached_pkey(&ibdev->ib_dev, port, ph_pkey_ix, &search_pkey);
-	if (err)
-		return err;
+	if (slave == mlx4_master_func_num(dev->dev))
+		return ib_find_cached_pkey(&dev->ib_dev, port, pkey, ix);
 
-	fm = (search_pkey & 0x8000) ? 1 : 0;
-	if (fm) {
-		*full_pk_ix = ph_pkey_ix;
-		search_pkey &= 0x7FFF;
-	} else {
-		*partial_pk_ix = ph_pkey_ix;
-		search_pkey |= 0x8000;
-	}
+	unassigned_pkey_ix = dev->dev->phys_caps.pkey_phys_table_len[port] - 1;
 
-	if (ib_find_exact_cached_pkey(&ibdev->ib_dev, port, search_pkey, &pk))
-		pk = 0xFFFF;
+	for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) {
+		if (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == unassigned_pkey_ix)
+			continue;
 
-	if (fm)
-		*partial_pk_ix = (pk & 0xFF);
-	else
-		*full_pk_ix = (pk & 0xFF);
+		pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][i];
 
-	*is_full_member = fm;
-	return err;
+		ret = ib_get_cached_pkey(&dev->ib_dev, port, pkey_ix, &slot_pkey);
+		if (ret)
+			continue;
+		if ((slot_pkey & 0x7FFF) == (pkey & 0x7FFF)) {
+			if (slot_pkey & 0x8000) {
+				*ix = (u16) pkey_ix;
+				return 0;
+			} else {
+				/* take first partial pkey index found */
+				if (partial_ix == 0xFF)
+					partial_ix = pkey_ix;
+			}
+		}
+	}
+
+	if (partial_ix < 0xFF) {
+		*ix = (u16) partial_ix;
+		return 0;
+	}
+
+	return -EINVAL;
 }
 
 int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
@@ -458,10 +465,8 @@ int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
 	unsigned tun_tx_ix = 0;
 	int dqpn;
 	int ret = 0;
-	int i;
-	int is_full_member = 0;
 	u16 tun_pkey_ix;
-	u8 ph_pkey_ix, full_pk_ix = 0, partial_pk_ix = 0;
+	u16 cached_pkey;
 
 	if (dest_qpt > IB_QPT_GSI)
 		return -EINVAL;
@@ -481,27 +486,17 @@ int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
 	else
 		tun_qp = &tun_ctx->qp[1];
 
-	/* compute pkey index for slave */
-	/* get physical pkey -- virtualized Dom0 pkey to phys*/
+	/* compute P_Key index to put in tunnel header for slave */
 	if (dest_qpt) {
-		ph_pkey_ix =
-			dev->pkeys.virt2phys_pkey[mlx4_master_func_num(dev->dev)][port - 1][wc->pkey_index];
-
-		/* now, translate this to the slave pkey index */
-		ret = get_pkey_phys_indices(dev, port, ph_pkey_ix, &full_pk_ix,
-					    &partial_pk_ix, &is_full_member);
+		u16 pkey_ix;
+		ret = ib_get_cached_pkey(&dev->ib_dev, port, wc->pkey_index, &cached_pkey);
 		if (ret)
 			return -EINVAL;
 
-		for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) {
-			if ((dev->pkeys.virt2phys_pkey[slave][port - 1][i] == full_pk_ix) ||
-			    (is_full_member &&
-			     (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == partial_pk_ix)))
-				break;
-		}
-		if (i == dev->dev->caps.pkey_table_len[port])
+		ret = find_slave_port_pkey_ix(dev, slave, port, cached_pkey, &pkey_ix);
+		if (ret)
 			return -EINVAL;
-		tun_pkey_ix = i;
+		tun_pkey_ix = pkey_ix;
 	} else
 		tun_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0];
 
diff --git a/drivers/infiniband/hw/mlx4/mcg.c b/drivers/infiniband/hw/mlx4/mcg.c
index 3c3b54c..25b2cdf 100644
--- a/drivers/infiniband/hw/mlx4/mcg.c
+++ b/drivers/infiniband/hw/mlx4/mcg.c
@@ -233,7 +233,8 @@ static int send_mad_to_slave(int slave, struct mlx4_ib_demux_ctx *ctx,
 
 	ib_query_ah(dev->sm_ah[ctx->port - 1], &ah_attr);
 
-	wc.pkey_index = 0;
+	if (ib_find_cached_pkey(&dev->ib_dev, ctx->port, IB_DEFAULT_PKEY_FULL, &wc.pkey_index))
+		return -EINVAL;
 	wc.sl = 0;
 	wc.dlid_path_bits = 0;
 	wc.port_num = ctx->port;
@@ -1074,10 +1075,6 @@ static void _mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy
 	unsigned long end;
 	int count;
 
-	if (ctx->flushing)
-		return;
-
-	ctx->flushing = 1;
 	for (i = 0; i < MAX_VFS; ++i)
 		clean_vf_mcast(ctx, i);
 
@@ -1107,9 +1104,6 @@ static void _mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy
 		force_clean_group(group);
 	}
 	mutex_unlock(&ctx->mcg_table_lock);
-
-	if (!destroy_wq)
-		ctx->flushing = 0;
 }
 
 struct clean_work {
@@ -1123,6 +1117,7 @@ static void mcg_clean_task(struct work_struct *work)
 	struct clean_work *cw = container_of(work, struct clean_work, work);
 
 	_mlx4_ib_mcg_port_cleanup(cw->ctx, cw->destroy_wq);
+	cw->ctx->flushing = 0;
 	kfree(cw);
 }
 
@@ -1130,13 +1125,20 @@ void mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq)
 {
 	struct clean_work *work;
 
+	if (ctx->flushing)
+		return;
+
+	ctx->flushing = 1;
+
 	if (destroy_wq) {
 		_mlx4_ib_mcg_port_cleanup(ctx, destroy_wq);
+		ctx->flushing = 0;
 		return;
 	}
 
 	work = kmalloc(sizeof *work, GFP_KERNEL);
 	if (!work) {
+		ctx->flushing = 0;
 		mcg_warn("failed allocating work for cleanup\n");
 		return;
 	}