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Date:	Mon, 28 Jul 2014 23:30:23 +0300
From:	Eli Cohen <eli@....mellanox.co.il>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, roland@...nel.org, ogerlitz@...lanox.com,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Eli Cohen <eli@...lanox.com>
Subject: [PATCH net-next 2/3] mlx5: minor fixes (mainly avoidance of hidden casts)

From: Jack Morgenstein <jackm@....mellanox.co.il>

There were many places where parameters which should be u8/u16 were
integer type.

Additionally, in 2 places, a check for a non-null pointer was added
before dereferencing the pointer (this is actually a bug fix).

Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il>
Signed-off-by: Eli Cohen <eli@...lanox.com>
---
 drivers/infiniband/hw/mlx5/cq.c                     | 2 +-
 drivers/infiniband/hw/mlx5/mad.c                    | 2 +-
 drivers/infiniband/hw/mlx5/main.c                   | 2 +-
 drivers/infiniband/hw/mlx5/mem.c                    | 2 +-
 drivers/infiniband/hw/mlx5/mlx5_ib.h                | 2 +-
 drivers/infiniband/hw/mlx5/qp.c                     | 4 ++--
 drivers/net/ethernet/mellanox/mlx5/core/alloc.c     | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/cmd.c       | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/eq.c        | 3 ++-
 drivers/net/ethernet/mellanox/mlx5/core/mad.c       | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/main.c      | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/port.c      | 2 +-
 include/linux/mlx5/device.h                         | 4 ----
 include/linux/mlx5/driver.h                         | 8 ++++----
 15 files changed, 19 insertions(+), 22 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 3b4dc858cef9..e4056279166d 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -348,7 +348,7 @@ static void handle_atomic(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
 static void handle_atomics(struct mlx5_ib_qp *qp, struct mlx5_cqe64 *cqe64,
 			   u16 tail, u16 head)
 {
-	int idx;
+	u16 idx;
 
 	do {
 		idx = tail & (qp->sq.wqe_cnt - 1);
diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index e259e7393152..b514bbb5610f 100644
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -41,7 +41,7 @@ enum {
 };
 
 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
-		 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+		 u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 		 void *in_mad, void *response_mad)
 {
 	u8 op_modifier = 0;
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index f2cfd363a705..166335a95c59 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -478,7 +478,7 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
 	int uuarn;
 	int err;
 	int i;
-	int reqlen;
+	size_t reqlen;
 
 	if (!dev->ib_active)
 		return ERR_PTR(-EAGAIN);
diff --git a/drivers/infiniband/hw/mlx5/mem.c b/drivers/infiniband/hw/mlx5/mem.c
index 8499aec94db6..a3e81444c825 100644
--- a/drivers/infiniband/hw/mlx5/mem.c
+++ b/drivers/infiniband/hw/mlx5/mem.c
@@ -148,7 +148,7 @@ int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset)
 	u64 off_mask;
 	u64 buf_off;
 
-	page_size = 1 << page_shift;
+	page_size = (u64)1 << page_shift;
 	page_mask = page_size - 1;
 	buf_off = addr & page_mask;
 	off_size = page_size >> 6;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index a0e204ffe367..386780f0d1e1 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -461,7 +461,7 @@ void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq)
 void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
 void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
 int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
-		 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
+		 u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 		 void *in_mad, void *response_mad);
 struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
 			   struct mlx5_ib_ah *ah);
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index b8bb6ad6350c..7efe6e3f3542 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -2539,7 +2539,7 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 			case IB_WR_RDMA_WRITE_WITH_IMM:
 				set_raddr_seg(seg, wr->wr.rdma.remote_addr,
 					      wr->wr.rdma.rkey);
-				seg  += sizeof(struct mlx5_wqe_raddr_seg);
+				seg += sizeof(struct mlx5_wqe_raddr_seg);
 				size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
 				break;
 
@@ -2668,7 +2668,7 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 		case IB_QPT_SMI:
 		case IB_QPT_GSI:
 			set_datagram_seg(seg, wr);
-			seg  += sizeof(struct mlx5_wqe_datagram_seg);
+			seg += sizeof(struct mlx5_wqe_datagram_seg);
 			size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
 			if (unlikely((seg == qend)))
 				seg = mlx5_get_send_wqe(qp, 0);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
index b215742b842f..56779c1c7811 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -56,7 +56,7 @@ int mlx5_buf_alloc(struct mlx5_core_dev *dev, int size, int max_direct,
 	if (size <= max_direct) {
 		buf->nbufs        = 1;
 		buf->npages       = 1;
-		buf->page_shift   = get_order(size) + PAGE_SHIFT;
+		buf->page_shift   = (u8)get_order(size) + PAGE_SHIFT;
 		buf->direct.buf   = dma_zalloc_coherent(&dev->pdev->dev,
 							size, &t, GFP_KERNEL);
 		if (!buf->direct.buf)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index 87d1b018a9c3..4671747dd365 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -464,7 +464,7 @@ static void dump_command(struct mlx5_core_dev *dev,
 	struct mlx5_cmd_msg *msg = input ? ent->in : ent->out;
 	struct mlx5_cmd_mailbox *next = msg->next;
 	int data_only;
-	int offset = 0;
+	u32 offset = 0;
 	int dump_len;
 
 	data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA));
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 7f39ebcd6ad0..67cead2c079e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -252,7 +252,8 @@ static int mlx5_eq_int(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
 			case MLX5_PORT_CHANGE_SUBTYPE_GUID:
 			case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG:
 			case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED:
-				dev->event(dev, port_subtype_event(eqe->sub_type), &port);
+				if (dev->event)
+					dev->event(dev, port_subtype_event(eqe->sub_type), &port);
 				break;
 			default:
 				mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n",
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mad.c b/drivers/net/ethernet/mellanox/mlx5/core/mad.c
index 18d6fd5dd90b..fd80ecfa7195 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mad.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mad.c
@@ -37,7 +37,7 @@
 #include "mlx5_core.h"
 
 int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
-		      u16 opmod, int port)
+		      u16 opmod, u8 port)
 {
 	struct mlx5_mad_ifc_mbox_in *in = NULL;
 	struct mlx5_mad_ifc_mbox_out *out = NULL;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 4b7f9da4bf11..fd782bf49dc6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -311,7 +311,7 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
 
 	copy_rw_fields(&set_ctx->hca_cap, &query_out->hca_cap);
 
-	if (dev->profile->mask & MLX5_PROF_MASK_QP_SIZE)
+	if (dev->profile && dev->profile->mask & MLX5_PROF_MASK_QP_SIZE)
 		set_ctx->hca_cap.log_max_qp = dev->profile->log_max_qp;
 
 	flags = be64_to_cpu(query_out->hca_cap.flags);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
index c2a953ef0e67..d476918ef269 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -51,7 +51,7 @@ enum {
 
 struct mlx5_pages_req {
 	struct mlx5_core_dev *dev;
-	u32	func_id;
+	u16	func_id;
 	s32	npages;
 	struct work_struct work;
 };
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 8c9ac870ecb1..313965853e10 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -86,7 +86,7 @@ struct mlx5_reg_pcap {
 	__be32			caps_31_0;
 };
 
-int mlx5_set_port_caps(struct mlx5_core_dev *dev, int port_num, u32 caps)
+int mlx5_set_port_caps(struct mlx5_core_dev *dev, u8 port_num, u32 caps)
 {
 	struct mlx5_reg_pcap in;
 	struct mlx5_reg_pcap out;
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 3406cfb1267a..334947151dfc 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -456,9 +456,6 @@ struct mlx5_eqe_cq_err {
 	u8	syndrome;
 };
 
-struct mlx5_eqe_dropped_packet {
-};
-
 struct mlx5_eqe_port_state {
 	u8	reserved0[8];
 	u8	port;
@@ -498,7 +495,6 @@ union ev_data {
 	struct mlx5_eqe_comp		comp;
 	struct mlx5_eqe_qp_srq		qp_srq;
 	struct mlx5_eqe_cq_err		cq_err;
-	struct mlx5_eqe_dropped_packet	dp;
 	struct mlx5_eqe_port_state	port;
 	struct mlx5_eqe_gpio		gpio;
 	struct mlx5_eqe_congestion	cong;
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index d0cb5984a45f..76de0cc41640 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -381,8 +381,8 @@ struct mlx5_buf {
 	struct mlx5_buf_list   *page_list;
 	int			nbufs;
 	int			npages;
-	int			page_shift;
 	int			size;
+	u8			page_shift;
 };
 
 struct mlx5_eq {
@@ -736,7 +736,7 @@ int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
 int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn);
 int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn);
 int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, void *inb, void *outb,
-		      u16 opmod, int port);
+		      u16 opmod, u8 port);
 void mlx5_pagealloc_init(struct mlx5_core_dev *dev);
 void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev);
 int mlx5_pagealloc_start(struct mlx5_core_dev *dev);
@@ -769,7 +769,7 @@ void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev);
 int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
 			 int size_in, void *data_out, int size_out,
 			 u16 reg_num, int arg, int write);
-int mlx5_set_port_caps(struct mlx5_core_dev *dev, int port_num, u32 caps);
+int mlx5_set_port_caps(struct mlx5_core_dev *dev, u8 port_num, u32 caps);
 
 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq);
@@ -826,7 +826,7 @@ void mlx5_unregister_interface(struct mlx5_interface *intf);
 
 struct mlx5_profile {
 	u64	mask;
-	u32	log_max_qp;
+	u8	log_max_qp;
 	struct {
 		int	size;
 		int	limit;
-- 
1.9.3

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