rapidio: improve a size determination in five functions

Web:        https://git.kernel.org/torvalds/c/d1509c097f685472fb8c6b510ae8c8678499e53d
Commit:     d1509c097f685472fb8c6b510ae8c8678499e53d
Parent:     e1d66d042187f7f18a50fab83cbc9b21b183cc7c
Refname:    refs/heads/master
Author:     Markus Elfring <[email protected]>
AuthorDate: Tue Feb 6 15:39:51 2018 -0800
Committer:  Linus Torvalds <[email protected]>
CommitDate: Tue Feb 6 18:32:46 2018 -0800

    rapidio: improve a size determination in five functions
    
    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.
    
    Link: http://lkml.kernel.org/r/[email protected]
    Signed-off-by: Markus Elfring <[email protected]>
    Acked-by: Alexandre Bounine <[email protected]>
    Cc: Matt Porter <[email protected]>
    Signed-off-by: Andrew Morton <[email protected]>
    Signed-off-by: Linus Torvalds <[email protected]>
---
 drivers/rapidio/rio.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index b9dc932ce19e..90534365e46c 100644
--- a/drivers/rapidio/rio.c
+++ b/drivers/rapidio/rio.c
@@ -110,9 +110,8 @@ EXPORT_SYMBOL(rio_query_mport);
  */
 struct rio_net *rio_alloc_net(struct rio_mport *mport)
 {
-	struct rio_net *net;
+	struct rio_net *net = kzalloc(sizeof(*net), GFP_KERNEL);
 
-	net = kzalloc(sizeof(struct rio_net), GFP_KERNEL);
 	if (net) {
 		INIT_LIST_HEAD(&net->node);
 		INIT_LIST_HEAD(&net->devices);
@@ -246,8 +245,7 @@ int rio_request_inb_mbox(struct rio_mport *mport,
 	if (!mport->ops->open_inb_mbox)
 		goto out;
 
-	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
-
+	res = kzalloc(sizeof(*res), GFP_KERNEL);
 	if (res) {
 		rio_init_mbox_res(res, mbox, mbox);
 
@@ -329,8 +327,7 @@ int rio_request_outb_mbox(struct rio_mport *mport,
 	if (!mport->ops->open_outb_mbox)
 		goto out;
 
-	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
-
+	res = kzalloc(sizeof(*res), GFP_KERNEL);
 	if (res) {
 		rio_init_mbox_res(res, mbox, mbox);
 
@@ -445,8 +442,7 @@ int rio_request_inb_dbell(struct rio_mport *mport,
 					u16 dst, u16 info))
 {
 	int rc = 0;