[PATCH v2 for-next 0/7] RDMA/core: Correct some coding-style issues

[PATCH v2 for-next 0/7] RDMA/core: Correct some coding-style issues

[Weihang Li]

Do some cleanups according to the coding-style of kernel.

Changes since v1:
- Remove a BUG_ON in #3 and put the changes into a new patch.
- Drop the parts about spaces around xx_for_each_xx() from #4 because some
  clang formatter prefer current style.
- Link: https://patchwork.kernel.org/project/linux-rdma/cover/1617697184-48683-1-git-send-email-liweihang@huawei.com/

Weihang Li (1):
  RDMA/core: Remove redundant BUG_ON

Wenpeng Liang (6):
  RDMA/core: Print the function name by __func__ instead of an fixed
    string
  RDMA/core: Remove the redundant return statements
  RDMA/core: Add necessary spaces
  RDMA/core: Remove redundant spaces
  RDMA/core: Correct format of braces
  RDMA/core: Correct format of block comments

 drivers/infiniband/core/cache.c      |  3 ++-
 drivers/infiniband/core/cm.c         | 39 ++++++++++++++++----------------
 drivers/infiniband/core/cm_msgs.h    |  4 ++--
 drivers/infiniband/core/cma.c        | 21 ++++++++++--------
 drivers/infiniband/core/iwcm.c       |  1 -
 drivers/infiniband/core/iwpm_msg.c   |  3 ++-
 drivers/infiniband/core/mad.c        | 43 ++++++++++++++++--------------------
 drivers/infiniband/core/mad_rmpp.c   | 10 ++++-----
 drivers/infiniband/core/sysfs.c      | 13 +++++------
 drivers/infiniband/core/ucma.c       |  8 +++----
 drivers/infiniband/core/umem.c       |  4 ++--
 drivers/infiniband/core/user_mad.c   | 30 +++++++++++--------------
 drivers/infiniband/core/uverbs_cmd.c | 22 +++++++++---------
 drivers/infiniband/core/verbs.c      |  3 ++-
 14 files changed, 98 insertions(+), 106 deletions(-)

-- 
2.8.1

[PATCH v2 for-next 1/7] RDMA/core: Print the function name by __func__ instead of an fixed string

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

It's better to use __func__ than a fixed string to print a function's
name.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/ucma.c     |  4 ++--
 drivers/infiniband/core/umem.c     |  4 ++--
 drivers/infiniband/core/user_mad.c | 26 +++++++++++---------------
 3 files changed, 15 insertions(+), 19 deletions(-)

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index da2512c..21dda69 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1708,8 +1708,8 @@ static ssize_t ucma_write(struct file *filp, const char __user *buf,
 	ssize_t ret;
 
 	if (!ib_safe_file_access(filp)) {
-		pr_err_once("ucma_write: process %d (%s) changed security contexts after opening file descriptor, this is not allowed.\n",
-			    task_tgid_vnr(current), current->comm);
+		pr_err_once("%s: process %d (%s) changed security contexts after opening file descriptor, this is not allowed.\n",
+			    __func__, task_tgid_vnr(current), current->comm);
 		return -EACCES;
 	}
 
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 2cd6464..cedd03f 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -305,8 +305,8 @@ int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
 	int ret;
 
 	if (offset > umem->length || length > umem->length - offset) {
-		pr_err("ib_umem_copy_from not in range. offset: %zd umem length: %zd end: %zd\n",
-		       offset, umem->length, end);
+		pr_err("%s not in range. offset: %zd umem length: %zd end: %zd\n",
+		       __func__, offset, umem->length, end);
 		return -EINVAL;
 	}
 
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index a183b27..2e90517 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -688,8 +688,7 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg,
 	mutex_lock(&file->mutex);
 
 	if (!file->port->ib_dev) {
-		dev_notice(&file->port->dev,
-			   "ib_umad_reg_agent: invalid device\n");
+		dev_notice(&file->port->dev, "%s: invalid device\n", __func__);
 		ret = -EPIPE;
 		goto out;
 	}
@@ -701,7 +700,7 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg,
 
 	if (ureq.qpn != 0 && ureq.qpn != 1) {
 		dev_notice(&file->port->dev,
-			   "ib_umad_reg_agent: invalid QPN %d specified\n",
+			   "%s: invalid QPN %d specified\n", __func__,
 			   ureq.qpn);
 		ret = -EINVAL;
 		goto out;
@@ -711,9 +710,9 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg,
 		if (!__get_agent(file, agent_id))
 			goto found;
 
-	dev_notice(&file->port->dev,
-		   "ib_umad_reg_agent: Max Agents (%u) reached\n",
+	dev_notice(&file->port->dev, "%s: Max Agents (%u) reached\n", __func__,
 		   IB_UMAD_MAX_AGENTS);
+
 	ret = -ENOMEM;
 	goto out;
 
@@ -790,8 +789,7 @@ static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg)
 	mutex_lock(&file->mutex);
 
 	if (!file->port->ib_dev) {
-		dev_notice(&file->port->dev,
-			   "ib_umad_reg_agent2: invalid device\n");
+		dev_notice(&file->port->dev, "%s: invalid device\n", __func__);
 		ret = -EPIPE;
 		goto out;
 	}
@@ -802,17 +800,16 @@ static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg)
 	}
 
 	if (ureq.qpn != 0 && ureq.qpn != 1) {
-		dev_notice(&file->port->dev,
-			   "ib_umad_reg_agent2: invalid QPN %d specified\n",
-			   ureq.qpn);
+		dev_notice(&file->port->dev, "%s: invalid QPN %d specified\n",
+			   __func__, ureq.qpn);
 		ret = -EINVAL;
 		goto out;
 	}
 
 	if (ureq.flags & ~IB_USER_MAD_REG_FLAGS_CAP) {
 		dev_notice(&file->port->dev,
-			   "ib_umad_reg_agent2 failed: invalid registration flags specified 0x%x; supported 0x%x\n",
-			   ureq.flags, IB_USER_MAD_REG_FLAGS_CAP);
+			   "%s failed: invalid registration flags specified 0x%x; supported 0x%x\n",
+			   __func__, ureq.flags, IB_USER_MAD_REG_FLAGS_CAP);
 		ret = -EINVAL;
 
 		if (put_user((u32)IB_USER_MAD_REG_FLAGS_CAP,
@@ -827,8 +824,7 @@ static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg)
 		if (!__get_agent(file, agent_id))
 			goto found;
 
-	dev_notice(&file->port->dev,
-		   "ib_umad_reg_agent2: Max Agents (%u) reached\n",
+	dev_notice(&file->port->dev, "%s: Max Agents (%u) reached\n", __func__,
 		   IB_UMAD_MAX_AGENTS);
 	ret = -ENOMEM;
 	goto out;
@@ -840,7 +836,7 @@ static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg)
 		req.mgmt_class_version = ureq.mgmt_class_version;
 		if (ureq.oui & 0xff000000) {
 			dev_notice(&file->port->dev,
-				   "ib_umad_reg_agent2 failed: oui invalid 0x%08x\n",
+				   "%s failed: oui invalid 0x%08x\n", __func__,
 				   ureq.oui);
 			ret = -EINVAL;
 			goto out;
-- 
2.8.1

[PATCH v2 for-next 2/7] RDMA/core: Remove the redundant return statements

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

The return statements at the end of a void function is meaningless.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/mad.c   | 2 --
 drivers/infiniband/core/sysfs.c | 1 -
 2 files changed, 3 deletions(-)

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index ce0397f..16ecb81 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1860,8 +1860,6 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
 						   mad_recv_wc);
 		deref_mad_agent(mad_agent_priv);
 	}
-
-	return;
 }
 
 static enum smi_action handle_ib_smi(const struct ib_mad_port_private *port_priv,
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 91a53b2..dcff5e7 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1049,7 +1049,6 @@ static void setup_hw_stats(struct ib_device *device, struct ib_port *port,
 	kfree(hsag);
 err_free_stats:
 	kfree(stats);
-	return;
 }
 
 static int add_port(struct ib_core_device *coredev, int port_num)
-- 
2.8.1

[PATCH v2 for-next 3/7] RDMA/core: Add necessary spaces

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

Space is required before '(' of switch statements and around '='.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/cm.c      | 2 +-
 drivers/infiniband/core/cm_msgs.h | 4 ++--
 drivers/infiniband/core/ucma.c    | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 32c836b..28c8d13 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3099,7 +3099,7 @@ int ib_send_cm_mra(struct ib_cm_id *cm_id,
 	cm_id_priv = container_of(cm_id, struct cm_id_private, id);
 
 	spin_lock_irqsave(&cm_id_priv->lock, flags);
-	switch(cm_id_priv->id.state) {
+	switch (cm_id_priv->id.state) {
 	case IB_CM_REQ_RCVD:
 		cm_state = IB_CM_MRA_REQ_SENT;
 		lap_state = cm_id->lap_state;
diff --git a/drivers/infiniband/core/cm_msgs.h b/drivers/infiniband/core/cm_msgs.h
index 0cc4065..8462de7 100644
--- a/drivers/infiniband/core/cm_msgs.h
+++ b/drivers/infiniband/core/cm_msgs.h
@@ -22,7 +22,7 @@
 static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)
 {
 	u8 transport_type = IBA_GET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg);
-	switch(transport_type) {
+	switch (transport_type) {
 	case 0: return IB_QPT_RC;
 	case 1: return IB_QPT_UC;
 	case 3:
@@ -37,7 +37,7 @@ static inline enum ib_qp_type cm_req_get_qp_type(struct cm_req_msg *req_msg)
 static inline void cm_req_set_qp_type(struct cm_req_msg *req_msg,
 				      enum ib_qp_type qp_type)
 {
-	switch(qp_type) {
+	switch (qp_type) {
 	case IB_QPT_UC:
 		IBA_SET(CM_REQ_TRANSPORT_SERVICE_TYPE, req_msg, 1);
 		break;
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 21dda69..15d57ba 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -231,7 +231,7 @@ static void ucma_copy_conn_event(struct rdma_ucm_conn_param *dst,
 		memcpy(dst->private_data, src->private_data,
 		       src->private_data_len);
 	dst->private_data_len = src->private_data_len;
-	dst->responder_resources =src->responder_resources;
+	dst->responder_resources = src->responder_resources;
 	dst->initiator_depth = src->initiator_depth;
 	dst->flow_control = src->flow_control;
 	dst->retry_count = src->retry_count;
@@ -1034,7 +1034,7 @@ static void ucma_copy_conn_param(struct rdma_cm_id *id,
 {
 	dst->private_data = src->private_data;
 	dst->private_data_len = src->private_data_len;
-	dst->responder_resources =src->responder_resources;
+	dst->responder_resources = src->responder_resources;
 	dst->initiator_depth = src->initiator_depth;
 	dst->flow_control = src->flow_control;
 	dst->retry_count = src->retry_count;
-- 
2.8.1

[PATCH v2 for-next 4/7] RDMA/core: Remove redundant spaces

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

Space is not required after '(', before ')', before ',' and between '*'
and symbol name of a definition.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/cm.c         | 31 +++++++++++++++----------------
 drivers/infiniband/core/mad.c        | 18 +++++++++---------
 drivers/infiniband/core/mad_rmpp.c   | 10 +++++-----
 drivers/infiniband/core/sysfs.c      |  6 +++---
 drivers/infiniband/core/user_mad.c   |  4 ++--
 drivers/infiniband/core/uverbs_cmd.c | 22 +++++++++++-----------
 6 files changed, 45 insertions(+), 46 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 28c8d13..190ac78 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -420,8 +420,7 @@ static int cm_alloc_response_msg(struct cm_port *port,
 	return 0;
 }
 
-static void * cm_copy_private_data(const void *private_data,
-				   u8 private_data_len)
+static void *cm_copy_private_data(const void *private_data, u8 private_data_len)
 {
 	void *data;
 
@@ -680,8 +679,8 @@ static struct cm_id_private *cm_insert_listen(struct cm_id_private *cm_id_priv,
 	return cm_id_priv;
 }
 
-static struct cm_id_private * cm_find_listen(struct ib_device *device,
-					     __be64 service_id)
+static struct cm_id_private *cm_find_listen(struct ib_device *device,
+					    __be64 service_id)
 {
 	struct rb_node *node = cm.listen_service_table.rb_node;
 	struct cm_id_private *cm_id_priv;
@@ -708,8 +707,8 @@ static struct cm_id_private * cm_find_listen(struct ib_device *device,
 	return NULL;
 }
 
-static struct cm_timewait_info * cm_insert_remote_id(struct cm_timewait_info
-						     *timewait_info)
+static struct cm_timewait_info *cm_insert_remote_id(struct cm_timewait_info
+						    *timewait_info)
 {
 	struct rb_node **link = &cm.remote_id_table.rb_node;
 	struct rb_node *parent = NULL;
@@ -767,8 +766,8 @@ static struct cm_id_private *cm_find_remote_id(__be64 remote_ca_guid,
 	return res;
 }
 
-static struct cm_timewait_info * cm_insert_remote_qpn(struct cm_timewait_info
-						      *timewait_info)
+static struct cm_timewait_info *cm_insert_remote_qpn(struct cm_timewait_info
+						     *timewait_info)
 {
 	struct rb_node **link = &cm.remote_qp_table.rb_node;
 	struct rb_node *parent = NULL;
@@ -797,8 +796,8 @@ static struct cm_timewait_info * cm_insert_remote_qpn(struct cm_timewait_info
 	return NULL;
 }
 
-static struct cm_id_private * cm_insert_remote_sidr(struct cm_id_private
-						    *cm_id_priv)
+static struct cm_id_private *cm_insert_remote_sidr(struct cm_id_private
+						   *cm_id_priv)
 {
 	struct rb_node **link = &cm.remote_sidr_table.rb_node;
 	struct rb_node *parent = NULL;
@@ -897,7 +896,7 @@ struct ib_cm_id *ib_create_cm_id(struct ib_device *device,
 }
 EXPORT_SYMBOL(ib_create_cm_id);
 
-static struct cm_work * cm_dequeue_work(struct cm_id_private *cm_id_priv)
+static struct cm_work *cm_dequeue_work(struct cm_id_private *cm_id_priv)
 {
 	struct cm_work *work;
 
@@ -986,7 +985,7 @@ static void cm_remove_remote(struct cm_id_private *cm_id_priv)
 	}
 }
 
-static struct cm_timewait_info * cm_create_timewait_info(__be32 local_id)
+static struct cm_timewait_info *cm_create_timewait_info(__be32 local_id)
 {
 	struct cm_timewait_info *timewait_info;
 
@@ -1977,8 +1976,8 @@ unlock:	spin_unlock_irq(&cm_id_priv->lock);
 free:	cm_free_msg(msg);
 }
 
-static struct cm_id_private * cm_match_req(struct cm_work *work,
-					   struct cm_id_private *cm_id_priv)
+static struct cm_id_private *cm_match_req(struct cm_work *work,
+					  struct cm_id_private *cm_id_priv)
 {
 	struct cm_id_private *listen_cm_id_priv, *cur_cm_id_priv;
 	struct cm_timewait_info *timewait_info;
@@ -2994,7 +2993,7 @@ static void cm_format_rej_event(struct cm_work *work)
 		IBA_GET_MEM_PTR(CM_REJ_PRIVATE_DATA, rej_msg);
 }
 
-static struct cm_id_private * cm_acquire_rejected_id(struct cm_rej_msg *rej_msg)
+static struct cm_id_private *cm_acquire_rejected_id(struct cm_rej_msg *rej_msg)
 {
 	struct cm_id_private *cm_id_priv;
 	__be32 remote_id;
@@ -3156,7 +3155,7 @@ error2:	spin_unlock_irqrestore(&cm_id_priv->lock, flags);
 }
 EXPORT_SYMBOL(ib_send_cm_mra);
 
-static struct cm_id_private * cm_acquire_mraed_id(struct cm_mra_msg *mra_msg)
+static struct cm_id_private *cm_acquire_mraed_id(struct cm_mra_msg *mra_msg)
 {
 	switch (IBA_GET(CM_MRA_MESSAGE_MRAED, mra_msg)) {
 	case CM_MSG_RESPONSE_REQ:
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 16ecb81..092b660 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -807,7 +807,7 @@ static int alloc_send_rmpp_list(struct ib_mad_send_wr_private *send_wr,
 
 	/* Allocate data segments. */
 	for (left = send_buf->data_len + pad; left > 0; left -= seg_size) {
-		seg = kmalloc(sizeof (*seg) + seg_size, gfp_mask);
+		seg = kmalloc(sizeof(*seg) + seg_size, gfp_mask);
 		if (!seg) {
 			free_send_rmpp_list(send_wr);
 			return -ENOMEM;
@@ -837,12 +837,12 @@ int ib_mad_kernel_rmpp_agent(const struct ib_mad_agent *agent)
 }
 EXPORT_SYMBOL(ib_mad_kernel_rmpp_agent);
 
-struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent,
-					    u32 remote_qpn, u16 pkey_index,
-					    int rmpp_active,
-					    int hdr_len, int data_len,
-					    gfp_t gfp_mask,
-					    u8 base_version)
+struct ib_mad_send_buf *ib_create_send_mad(struct ib_mad_agent *mad_agent,
+					   u32 remote_qpn, u16 pkey_index,
+					   int rmpp_active,
+					   int hdr_len, int data_len,
+					   gfp_t gfp_mask,
+					   u8 base_version)
 {
 	struct ib_mad_agent_private *mad_agent_priv;
 	struct ib_mad_send_wr_private *mad_send_wr;
@@ -1679,7 +1679,7 @@ static inline int rcv_has_same_class(const struct ib_mad_send_wr_private *wr,
 
 static inline int rcv_has_same_gid(const struct ib_mad_agent_private *mad_agent_priv,
 				   const struct ib_mad_send_wr_private *wr,
-				   const struct ib_mad_recv_wc *rwc )
+				   const struct ib_mad_recv_wc *rwc)
 {
 	struct rdma_ah_attr attr;
 	u8 send_resp, rcv_resp;
@@ -2256,7 +2256,7 @@ void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
 	adjust_timeout(mad_agent_priv);
 	spin_unlock_irqrestore(&mad_agent_priv->lock, flags);
 
-	if (mad_send_wr->status != IB_WC_SUCCESS )
+	if (mad_send_wr->status != IB_WC_SUCCESS)
 		mad_send_wc->status = mad_send_wr->status;
 	if (ret == IB_RMPP_RESULT_INTERNAL)
 		ib_rmpp_send_handler(mad_send_wc);
diff --git a/drivers/infiniband/core/mad_rmpp.c b/drivers/infiniband/core/mad_rmpp.c
index e0573e4..8af0619 100644
--- a/drivers/infiniband/core/mad_rmpp.c
+++ b/drivers/infiniband/core/mad_rmpp.c
@@ -382,8 +382,8 @@ static inline int get_seg_num(struct ib_mad_recv_buf *seg)
 	return be32_to_cpu(rmpp_mad->rmpp_hdr.seg_num);
 }
 
-static inline struct ib_mad_recv_buf * get_next_seg(struct list_head *rmpp_list,
-						    struct ib_mad_recv_buf *seg)
+static inline struct ib_mad_recv_buf *get_next_seg(struct list_head *rmpp_list,
+						   struct ib_mad_recv_buf *seg)
 {
 	if (seg->list.next == rmpp_list)
 		return NULL;
@@ -396,8 +396,8 @@ static inline int window_size(struct ib_mad_agent_private *agent)
 	return max(agent->qp_info->recv_queue.max_active >> 3, 1);
 }
 
-static struct ib_mad_recv_buf * find_seg_location(struct list_head *rmpp_list,
-						  int seg_num)
+static struct ib_mad_recv_buf *find_seg_location(struct list_head *rmpp_list,
+						 int seg_num)
 {
 	struct ib_mad_recv_buf *seg_buf;
 	int cur_seg_num;
@@ -449,7 +449,7 @@ static inline int get_mad_len(struct mad_rmpp_recv *rmpp_recv)
 	return hdr_size + rmpp_recv->seg_num * data_size - pad;
 }
 
-static struct ib_mad_recv_wc * complete_rmpp(struct mad_rmpp_recv *rmpp_recv)
+static struct ib_mad_recv_wc *complete_rmpp(struct mad_rmpp_recv *rmpp_recv)
 {
 	struct ib_mad_recv_wc *rmpp_wc;
 
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index dcff5e7..52401d7 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -297,7 +297,7 @@ static ssize_t rate_show(struct ib_port *p, struct port_attribute *unused,
 
 static const char *phys_state_to_str(enum ib_port_phys_state phys_state)
 {
-	static const char * phys_state_str[] = {
+	static const char *phys_state_str[] = {
 		"<unknown>",
 		"Sleep",
 		"Polling",
@@ -470,14 +470,14 @@ static ssize_t show_port_pkey(struct ib_port *p, struct port_attribute *attr,
 struct port_table_attribute port_pma_attr_##_name = {			\
 	.attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),	\
 	.index = (_offset) | ((_width) << 16) | ((_counter) << 24),	\
-	.attr_id = IB_PMA_PORT_COUNTERS ,				\
+	.attr_id = IB_PMA_PORT_COUNTERS,				\
 }
 
 #define PORT_PMA_ATTR_EXT(_name, _width, _offset)			\
 struct port_table_attribute port_pma_attr_ext_##_name = {		\
 	.attr  = __ATTR(_name, S_IRUGO, show_pma_counter, NULL),	\
 	.index = (_offset) | ((_width) << 16),				\
-	.attr_id = IB_PMA_PORT_COUNTERS_EXT ,				\
+	.attr_id = IB_PMA_PORT_COUNTERS_EXT,				\
 }
 
 /*
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 2e90517..852efed 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -165,8 +165,8 @@ static void ib_umad_dev_put(struct ib_umad_device *dev)
 
 static int hdr_size(struct ib_umad_file *file)
 {
-	return file->use_pkey_index ? sizeof (struct ib_user_mad_hdr) :
-		sizeof (struct ib_user_mad_hdr_old);
+	return file->use_pkey_index ? sizeof(struct ib_user_mad_hdr) :
+				      sizeof(struct ib_user_mad_hdr_old);
 }
 
 /* caller must hold file->mutex */
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 9e070ff..8d9c344 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2002,12 +2002,12 @@ static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
 
 static void *alloc_wr(size_t wr_size, __u32 num_sge)
 {
-	if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
-		       sizeof (struct ib_sge))
+	if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
+		       sizeof(struct ib_sge))
 		return NULL;
 
-	return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
-			 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
+	return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
+		       num_sge * sizeof(struct ib_sge), GFP_KERNEL);
 }
 
 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
@@ -2216,7 +2216,7 @@ ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
 	const struct ib_sge __user *sgls;
 	const void __user *wqes;
 
-	if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
+	if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
 		return ERR_PTR(-EINVAL);
 
 	wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
@@ -2249,14 +2249,14 @@ ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
 		}
 
 		if (user_wr->num_sge >=
-		    (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
-		    sizeof (struct ib_sge)) {
+		    (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
+		    sizeof(struct ib_sge)) {
 			ret = -EINVAL;
 			goto err;
 		}
 
-		next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
-			       user_wr->num_sge * sizeof (struct ib_sge),
+		next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
+			       user_wr->num_sge * sizeof(struct ib_sge),
 			       GFP_KERNEL);
 		if (!next) {
 			ret = -ENOMEM;
@@ -2274,8 +2274,8 @@ ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
 		next->num_sge    = user_wr->num_sge;
 
 		if (next->num_sge) {
-			next->sg_list = (void *) next +
-				ALIGN(sizeof *next, sizeof (struct ib_sge));
+			next->sg_list = (void *)next +
+				ALIGN(sizeof(*next), sizeof(struct ib_sge));
 			if (copy_from_user(next->sg_list, sgls + sg_ind,
 					   next->num_sge *
 						   sizeof(struct ib_sge))) {
-- 
2.8.1

[PATCH v2 for-next 5/7] RDMA/core: Correct format of braces

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

Do following cleanups about braces:
- Add the necessary braces to maintain context alignment.
- Fix the open '{' that is not on the same line as "switch".
- Remove braces that are not necessary for single statement blocks.
- Fix "else" that doesn't follow close brace '}'.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/cache.c |  3 ++-
 drivers/infiniband/core/cm.c    |  3 +--
 drivers/infiniband/core/cma.c   | 21 ++++++++++++---------
 drivers/infiniband/core/mad.c   | 20 ++++++++------------
 drivers/infiniband/core/sysfs.c |  6 ++----
 5 files changed, 25 insertions(+), 28 deletions(-)

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index d779590..3b0991f 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -1113,8 +1113,9 @@ int ib_find_cached_pkey(struct ib_device *device, u32 port_num,
 				*index = i;
 				ret = 0;
 				break;
-			} else
+			} else {
 				partial_ix = i;
+			}
 		}
 
 	if (ret && partial_ix >= 0) {
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 190ac78..ed7b70b 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3917,8 +3917,7 @@ static int cm_establish(struct ib_cm_id *cm_id)
 
 	cm_id_priv = container_of(cm_id, struct cm_id_private, id);
 	spin_lock_irqsave(&cm_id_priv->lock, flags);
-	switch (cm_id->state)
-	{
+	switch (cm_id->state) {
 	case IB_CM_REP_SENT:
 	case IB_CM_MRA_REP_RCVD:
 		cm_id->state = IB_CM_ESTABLISHED;
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 5ad22b2..ca5ff35 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -1126,8 +1126,9 @@ int rdma_init_qp_attr(struct rdma_cm_id *id, struct ib_qp_attr *qp_attr,
 						 qp_attr_mask);
 		qp_attr->port_num = id_priv->id.port_num;
 		*qp_attr_mask |= IB_QP_PORT;
-	} else
+	} else {
 		ret = -ENOSYS;
+	}
 
 	if ((*qp_attr_mask & IB_QP_TIMEOUT) && id_priv->timeout_set)
 		qp_attr->timeout = id_priv->timeout;
@@ -4116,10 +4117,11 @@ int rdma_connect_locked(struct rdma_cm_id *id,
 			ret = cma_resolve_ib_udp(id_priv, conn_param);
 		else
 			ret = cma_connect_ib(id_priv, conn_param);
-	} else if (rdma_cap_iw_cm(id->device, id->port_num))
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = cma_connect_iw(id_priv, conn_param);
-	else
+	} else {
 		ret = -ENOSYS;
+	}
 	if (ret)
 		goto err_state;
 	return 0;
@@ -4226,9 +4228,9 @@ static int cma_accept_iw(struct rdma_id_private *id_priv,
 	iw_param.ird = conn_param->responder_resources;
 	iw_param.private_data = conn_param->private_data;
 	iw_param.private_data_len = conn_param->private_data_len;
-	if (id_priv->id.qp) {
+	if (id_priv->id.qp)
 		iw_param.qpn = id_priv->qp_num;
-	} else
+	else
 		iw_param.qpn = conn_param->qp_num;
 
 	return iw_cm_accept(id_priv->cm_id.iw, &iw_param);
@@ -4311,11 +4313,11 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 			else
 				ret = cma_rep_recv(id_priv);
 		}
-	} else if (rdma_cap_iw_cm(id->device, id->port_num))
+	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = cma_accept_iw(id_priv, conn_param);
-	else
+	} else {
 		ret = -ENOSYS;
-
+	}
 	if (ret)
 		goto reject;
 
@@ -4401,8 +4403,9 @@ int rdma_reject(struct rdma_cm_id *id, const void *private_data,
 	} else if (rdma_cap_iw_cm(id->device, id->port_num)) {
 		ret = iw_cm_reject(id_priv->cm_id.iw,
 				   private_data, private_data_len);
-	} else
+	} else {
 		ret = -ENOSYS;
+	}
 
 	return ret;
 }
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 092b660..3aabe90 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -155,8 +155,7 @@ static inline u8 convert_mgmt_class(u8 mgmt_class)
 
 static int get_spl_qp_index(enum ib_qp_type qp_type)
 {
-	switch (qp_type)
-	{
+	switch (qp_type) {
 	case IB_QPT_SMI:
 		return 0;
 	case IB_QPT_GSI:
@@ -707,8 +706,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv,
 				      (const struct ib_mad *)smp,
 				      (struct ib_mad *)mad_priv->mad, &mad_size,
 				      &out_mad_pkey_index);
-	switch (ret)
-	{
+	switch (ret) {
 	case IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY:
 		if (ib_response_mad((const struct ib_mad_hdr *)mad_priv->mad) &&
 		    mad_agent_priv->agent.recv_handler) {
@@ -1275,11 +1273,9 @@ static void remove_methods_mad_agent(struct ib_mad_mgmt_method_table *method,
 	int i;
 
 	/* Remove any methods for this mad agent */
-	for (i = 0; i < IB_MGMT_MAX_METHODS; i++) {
-		if (method->agent[i] == agent) {
+	for (i = 0; i < IB_MGMT_MAX_METHODS; i++)
+		if (method->agent[i] == agent)
 			method->agent[i] = NULL;
-		}
-	}
 }
 
 static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req,
@@ -1454,9 +1450,8 @@ static void remove_mad_reg_req(struct ib_mad_agent_private *agent_priv)
 	 * Was MAD registration request supplied
 	 * with original registration ?
 	 */
-	if (!agent_priv->reg_req) {
+	if (!agent_priv->reg_req)
 		goto out;
-	}
 
 	port_priv = agent_priv->qp_info->port_priv;
 	mgmt_class = convert_mgmt_class(agent_priv->reg_req->mgmt_class);
@@ -2200,9 +2195,10 @@ static void wait_for_response(struct ib_mad_send_wr_private *mad_send_wr)
 				       temp_mad_send_wr->timeout))
 				break;
 		}
-	}
-	else
+	} else {
 		list_item = &mad_agent_priv->wait_list;
+	}
+
 	list_add(&mad_send_wr->agent_list, list_item);
 
 	/* Reschedule a work item if we have a shorter timeout */
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 52401d7..05b702d 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -1074,9 +1074,8 @@ static int add_port(struct ib_core_device *coredev, int port_num)
 	ret = kobject_init_and_add(&p->kobj, &port_type,
 				   coredev->ports_kobj,
 				   "%d", port_num);
-	if (ret) {
+	if (ret)
 		goto err_put;
-	}
 
 	p->gid_attr_group = kzalloc(sizeof(*p->gid_attr_group), GFP_KERNEL);
 	if (!p->gid_attr_group) {
@@ -1087,9 +1086,8 @@ static int add_port(struct ib_core_device *coredev, int port_num)
 	p->gid_attr_group->port = p;
 	ret = kobject_init_and_add(&p->gid_attr_group->kobj, &gid_attr_type,
 				   &p->kobj, "gid_attrs");
-	if (ret) {
+	if (ret)
 		goto err_put_gid_attrs;
-	}
 
 	if (device->ops.process_mad && is_full_dev) {
 		p->pma_table = get_counter_table(device, port_num);
-- 
2.8.1

[PATCH v2 for-next 6/7] RDMA/core: Correct format of block comments

[Weihang Li]

From: Wenpeng Liang <liangwenpeng@huawei.com>

Block comments should not use a trailing */ on a separate line and every
line of a block comment should start with an '*'.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/cm.c       | 3 ++-
 drivers/infiniband/core/iwpm_msg.c | 3 ++-
 drivers/infiniband/core/mad.c      | 3 ++-
 drivers/infiniband/core/verbs.c    | 3 ++-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index ed7b70b..c3d1103 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -255,7 +255,8 @@ struct cm_id_private {
 	struct completion comp;
 	refcount_t refcount;
 	/* Number of clients sharing this ib_cm_id. Only valid for listeners.
-	 * Protected by the cm.lock spinlock. */
+	 * Protected by the cm.lock spinlock.
+	 */
 	int listen_sharecount;
 	struct rcu_head rcu;
 
diff --git a/drivers/infiniband/core/iwpm_msg.c b/drivers/infiniband/core/iwpm_msg.c
index 30a0ff7..932b26f 100644
--- a/drivers/infiniband/core/iwpm_msg.c
+++ b/drivers/infiniband/core/iwpm_msg.c
@@ -528,7 +528,8 @@ int iwpm_add_mapping_cb(struct sk_buff *skb, struct netlink_callback *cb)
 }
 
 /* netlink attribute policy for the response to add and query mapping request
- * and response with remote address info */
+ * and response with remote address info
+ */
 static const struct nla_policy resp_query_policy[IWPM_NLA_RQUERY_MAPPING_MAX] = {
 	[IWPM_NLA_RQUERY_MAPPING_SEQ]     = { .type = NLA_U32 },
 	[IWPM_NLA_RQUERY_LOCAL_ADDR]      = {
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 3aabe90..202ac8a 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -1829,7 +1829,8 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv,
 				deref_mad_agent(mad_agent_priv);
 			} else {
 				/* not user rmpp, revert to normal behavior and
-				 * drop the mad */
+				 * drop the mad
+				 */
 				ib_free_recv_mad(mad_recv_wc);
 				deref_mad_agent(mad_agent_priv);
 				return;
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index c576e2b..b7373a5 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -342,7 +342,8 @@ int ib_dealloc_pd_user(struct ib_pd *pd, struct ib_udata *udata)
 	}
 
 	/* uverbs manipulates usecnt with proper locking, while the kabi
-	   requires the caller to guarantee we can't race here. */
+	 * requires the caller to guarantee we can't race here.
+	 */
 	WARN_ON(atomic_read(&pd->usecnt));
 
 	ret = pd->device->ops.dealloc_pd(pd, udata);
-- 
2.8.1

[PATCH v2 for-next 7/7] RDMA/core: Remove redundant BUG_ON

[Weihang Li]

It's ok if the refcount of cm_id is zero when release the reference of it,
there is no need to call BUG_ON.

Signed-off-by: Weihang Li <liweihang@huawei.com>
---
 drivers/infiniband/core/iwcm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index da8adad..654ac72 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -211,7 +211,6 @@ static void free_cm_id(struct iwcm_id_private *cm_id_priv)
  */
 static int iwcm_deref_id(struct iwcm_id_private *cm_id_priv)
 {
-	BUG_ON(atomic_read(&cm_id_priv->refcount)==0);
 	if (atomic_dec_and_test(&cm_id_priv->refcount)) {
 		BUG_ON(!list_empty(&cm_id_priv->work_list));
 		free_cm_id(cm_id_priv);
-- 
2.8.1

Re: [PATCH v2 for-next 7/7] RDMA/core: Remove redundant BUG_ON

[Jason Gunthorpe]

On Wed, Apr 07, 2021 at 04:15:53PM +0800, Weihang Li wrote:
> It's ok if the refcount of cm_id is zero when release the reference of it,
> there is no need to call BUG_ON.

Huh? No it isn't.

If you want to remove this BUG_ON then convert this to a refcount_t
and rely on refcount debugging instead.

Jason

Re: [PATCH v2 for-next 7/7] RDMA/core: Remove redundant BUG_ON

[liweihang]

On 2021/4/13 1:51, Jason Gunthorpe wrote:
> On Wed, Apr 07, 2021 at 04:15:53PM +0800, Weihang Li wrote:
>> It's ok if the refcount of cm_id is zero when release the reference of it,
>> there is no need to call BUG_ON.
> 
> Huh? No it isn't.
> 
> If you want to remove this BUG_ON then convert this to a refcount_t
> and rely on refcount debugging instead.
> 
> Jason
> 

I see. I will try using refcount_t instead.

Thank you
Weihang

Re: [PATCH v2 for-next 0/7] RDMA/core: Correct some coding-style issues

[Leon Romanovsky]

On Wed, Apr 07, 2021 at 04:15:46PM +0800, Weihang Li wrote:
> Do some cleanups according to the coding-style of kernel.
> 
> Changes since v1:
> - Remove a BUG_ON in #3 and put the changes into a new patch.
> - Drop the parts about spaces around xx_for_each_xx() from #4 because some
>   clang formatter prefer current style.
> - Link: https://patchwork.kernel.org/project/linux-rdma/cover/1617697184-48683-1-git-send-email-liweihang@huawei.com/
> 
> Weihang Li (1):
>   RDMA/core: Remove redundant BUG_ON
> 
> Wenpeng Liang (6):
>   RDMA/core: Print the function name by __func__ instead of an fixed
>     string
>   RDMA/core: Remove the redundant return statements
>   RDMA/core: Add necessary spaces
>   RDMA/core: Remove redundant spaces
>   RDMA/core: Correct format of braces
>   RDMA/core: Correct format of block comments
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>

Re: [PATCH v2 for-next 0/7] RDMA/core: Correct some coding-style issues

[Jason Gunthorpe]

On Wed, Apr 07, 2021 at 04:15:46PM +0800, Weihang Li wrote:
> Do some cleanups according to the coding-style of kernel.
> 
> Changes since v1:
> - Remove a BUG_ON in #3 and put the changes into a new patch.
> - Drop the parts about spaces around xx_for_each_xx() from #4 because some
>   clang formatter prefer current style.
> - Link: https://patchwork.kernel.org/project/linux-rdma/cover/1617697184-48683-1-git-send-email-liweihang@huawei.com/

Let's not make a habit of sending patches like this, but I will take
this one
 
> Wenpeng Liang (6):
>   RDMA/core: Print the function name by __func__ instead of an fixed
>     string
>   RDMA/core: Remove the redundant return statements
>   RDMA/core: Add necessary spaces
>   RDMA/core: Remove redundant spaces

I fixed the layout of most of the lines this patch touched as they
were still not close enough to the canonical format.

Applied to for-next, thanks

Jason

Re: [PATCH v2 for-next 0/7] RDMA/core: Correct some coding-style issues

[liweihang]

On 2021/4/13 2:00, Jason Gunthorpe wrote:
> On Wed, Apr 07, 2021 at 04:15:46PM +0800, Weihang Li wrote:
>> Do some cleanups according to the coding-style of kernel.
>>
>> Changes since v1:
>> - Remove a BUG_ON in #3 and put the changes into a new patch.
>> - Drop the parts about spaces around xx_for_each_xx() from #4 because some
>>   clang formatter prefer current style.
>> - Link: https://patchwork.kernel.org/project/linux-rdma/cover/1617697184-48683-1-git-send-email-liweihang@huawei.com/
> 
> Let's not make a habit of sending patches like this, but I will take
> this one
>  

Sure.

>> Wenpeng Liang (6):
>>   RDMA/core: Print the function name by __func__ instead of an fixed
>>     string
>>   RDMA/core: Remove the redundant return statements
>>   RDMA/core: Add necessary spaces
>>   RDMA/core: Remove redundant spaces
> 
> I fixed the layout of most of the lines this patch touched as they
> were still not close enough to the canonical format.
> 

OK, thank you.

Weihang

> Applied to for-next, thanks
> 
> Jason
>