[PATCH 0/3] RDMA/iwpm: Adjustments for three function implementations

[PATCH 0/3] RDMA/iwpm: Adjustments for three function implementations

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 22:12:34 +0100

Three update suggestions were taken into account
from static source code analysis.

Markus Elfring (3):
  Delete an error message for a failed memory allocation in iwpm_create_nlmsg()
  Adjust a variable initialisation in iwpm_create_nlmsg()
  Improve a size determination in two functions

 drivers/infiniband/core/iwpm_util.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

-- 
2.16.1

[PATCH 0/3] RDMA/iwpm: Adjustments for three function implementations

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 22:12:34 +0100

Three update suggestions were taken into account
from static source code analysis.

Markus Elfring (3):
  Delete an error message for a failed memory allocation in iwpm_create_nlmsg()
  Adjust a variable initialisation in iwpm_create_nlmsg()
  Improve a size determination in two functions

 drivers/infiniband/core/iwpm_util.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

-- 
2.16.1

[PATCH 1/3] RDMA/iwpm: Delete an error message for a failed memory allocation in iwpm_create_nlmsg()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 21:48:01 +0100

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 81528f64061a..9821ae900f6d 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -439,10 +439,9 @@ struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
 	struct sk_buff *skb = NULL;
 
 	skb = dev_alloc_skb(IWPM_MSG_SIZE);
-	if (!skb) {
-		pr_err("%s Unable to allocate skb\n", __func__);
+	if (!skb)
 		goto create_nlmsg_exit;
-	}
+
 	if (!(ibnl_put_msg(skb, nlh, 0, 0, nl_client, nl_op,
 			   NLM_F_REQUEST))) {
 		pr_warn("%s: Unable to put the nlmsg header\n", __func__);
-- 
2.16.1

[PATCH 1/3] RDMA/iwpm: Delete an error message for a failed memory allocation in iwpm_create_nlmsg()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 21:48:01 +0100

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 81528f64061a..9821ae900f6d 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -439,10 +439,9 @@ struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
 	struct sk_buff *skb = NULL;
 
 	skb = dev_alloc_skb(IWPM_MSG_SIZE);
-	if (!skb) {
-		pr_err("%s Unable to allocate skb\n", __func__);
+	if (!skb)
 		goto create_nlmsg_exit;
-	}
+
 	if (!(ibnl_put_msg(skb, nlh, 0, 0, nl_client, nl_op,
 			   NLM_F_REQUEST))) {
 		pr_warn("%s: Unable to put the nlmsg header\n", __func__);
-- 
2.16.1

[PATCH 2/3] RDMA/iwpm: Adjust a variable initialisation in iwpm_create_nlmsg()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 21:56:54 +0100

The local variable "skb" will be reassigned by a following statement.
Thus adjust the initialisation at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 9821ae900f6d..9eb527074c32 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -436,9 +436,8 @@ int iwpm_compare_sockaddr(struct sockaddr_storage *a_sockaddr,
 struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
 						int nl_client)
 {
-	struct sk_buff *skb = NULL;
+	struct sk_buff *skb = dev_alloc_skb(IWPM_MSG_SIZE);
 
-	skb = dev_alloc_skb(IWPM_MSG_SIZE);
 	if (!skb)
 		goto create_nlmsg_exit;
 
-- 
2.16.1

[PATCH 2/3] RDMA/iwpm: Adjust a variable initialisation in iwpm_create_nlmsg()

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 21:56:54 +0100

The local variable "skb" will be reassigned by a following statement.
Thus adjust the initialisation at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 9821ae900f6d..9eb527074c32 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -436,9 +436,8 @@ int iwpm_compare_sockaddr(struct sockaddr_storage *a_sockaddr,
 struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
 						int nl_client)
 {
-	struct sk_buff *skb = NULL;
+	struct sk_buff *skb = dev_alloc_skb(IWPM_MSG_SIZE);
 
-	skb = dev_alloc_skb(IWPM_MSG_SIZE);
 	if (!skb)
 		goto create_nlmsg_exit;
 
-- 
2.16.1

[PATCH 3/3] RDMA/iwpm: Improve a size determination in two functions

[SF Markus Elfring]

From: Markus Elfring <elfring-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Date: Sat, 27 Jan 2018 22:05:54 +0100

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
---
 drivers/infiniband/core/iwpm_util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 9eb527074c32..902a2677df31 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -121,7 +121,8 @@ int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
 
 	if (!iwpm_valid_client(nl_client))
 		return ret;
-	map_info = kzalloc(sizeof(struct iwpm_mapping_info), GFP_KERNEL);
+
+	map_info = kzalloc(sizeof(*map_info), GFP_KERNEL);
 	if (!map_info)
 		return -ENOMEM;
 
@@ -298,7 +299,7 @@ struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
 	struct iwpm_nlmsg_request *nlmsg_request = NULL;
 	unsigned long flags;
 
-	nlmsg_request = kzalloc(sizeof(struct iwpm_nlmsg_request), gfp);
+	nlmsg_request = kzalloc(sizeof(*nlmsg_request), gfp);
 	if (!nlmsg_request)
 		return NULL;
 
-- 
2.16.1

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[PATCH 3/3] RDMA/iwpm: Improve a size determination in two functions

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 22:05:54 +0100

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 9eb527074c32..902a2677df31 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -121,7 +121,8 @@ int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
 
 	if (!iwpm_valid_client(nl_client))
 		return ret;
-	map_info = kzalloc(sizeof(struct iwpm_mapping_info), GFP_KERNEL);
+
+	map_info = kzalloc(sizeof(*map_info), GFP_KERNEL);
 	if (!map_info)
 		return -ENOMEM;
 
@@ -298,7 +299,7 @@ struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
 	struct iwpm_nlmsg_request *nlmsg_request = NULL;
 	unsigned long flags;
 
-	nlmsg_request = kzalloc(sizeof(struct iwpm_nlmsg_request), gfp);
+	nlmsg_request = kzalloc(sizeof(*nlmsg_request), gfp);
 	if (!nlmsg_request)
 		return NULL;
 
-- 
2.16.1

[PATCH 3/3] RDMA/iwpm: Improve a size determination in two functions

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 27 Jan 2018 22:05:54 +0100

Replace the specification of data structures by pointer dereferences
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/infiniband/core/iwpm_util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
index 9eb527074c32..902a2677df31 100644
--- a/drivers/infiniband/core/iwpm_util.c
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -121,7 +121,8 @@ int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
 
 	if (!iwpm_valid_client(nl_client))
 		return ret;
-	map_info = kzalloc(sizeof(struct iwpm_mapping_info), GFP_KERNEL);
+
+	map_info = kzalloc(sizeof(*map_info), GFP_KERNEL);
 	if (!map_info)
 		return -ENOMEM;
 
@@ -298,7 +299,7 @@ struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
 	struct iwpm_nlmsg_request *nlmsg_request = NULL;
 	unsigned long flags;
 
-	nlmsg_request = kzalloc(sizeof(struct iwpm_nlmsg_request), gfp);
+	nlmsg_request = kzalloc(sizeof(*nlmsg_request), gfp);
 	if (!nlmsg_request)
 		return NULL;
 
-- 
2.16.1

Re: [PATCH 1/3] RDMA/iwpm: Delete an error message for a failed memory allocation in iwpm_create_nlmsg()

[Jason Gunthorpe]

On Sat, Jan 27, 2018 at 10:19:05PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sat, 27 Jan 2018 21:48:01 +0100
> 
> Omit an extra message for a memory allocation failure in this function.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
>  drivers/infiniband/core/iwpm_util.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

applied to for-next

Jason

Re: [PATCH 1/3] RDMA/iwpm: Delete an error message for a failed memory allocation in iwpm_create_nlm

[Jason Gunthorpe]

On Sat, Jan 27, 2018 at 10:19:05PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Sat, 27 Jan 2018 21:48:01 +0100
> 
> Omit an extra message for a memory allocation failure in this function.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
>  drivers/infiniband/core/iwpm_util.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

applied to for-next

Jason