[PATCH 0/2] PCMCIA-rsrc_nonstatic: Adjustments for two function implementations

[PATCH 0/2] PCMCIA-rsrc_nonstatic: Adjustments for two function implementations

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 28 Dec 2017 21:26:54 +0100

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

Markus Elfring (2):
  Delete an error message for a failed memory allocation in two functions
  Improve a size determination in three functions

 drivers/pcmcia/rsrc_nonstatic.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

-- 
2.15.1

[PATCH 1/2] pcmcia/rsrc_nonstatic: Delete an error message for a failed memory allocation in two functions

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 28 Dec 2017 21:00:13 +0100

Omit an extra message for a memory allocation failure in these functions.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/pcmcia/rsrc_nonstatic.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index 5ef7b46a2578..91dc559e4a81 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -121,10 +121,9 @@ static int add_interval(struct resource_map *map, u_long base, u_long num)
 			break;
 	}
 	q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
-	if (!q) {
-		printk(KERN_WARNING "out of memory to update resources\n");
+	if (!q)
 		return -ENOMEM;
-	}
+
 	q->base = base; q->num = num;
 	q->next = p->next; p->next = q;
 	return 0;
@@ -160,10 +159,9 @@ static int sub_interval(struct resource_map *map, u_long base, u_long num)
 				/* Split the block into two pieces */
 				p = kmalloc(sizeof(struct resource_map),
 					GFP_KERNEL);
-				if (!p) {
-					printk(KERN_WARNING "out of memory to update resources\n");
+				if (!p)
 					return -ENOMEM;
-				}
+
 				p->base = base+num;
 				p->num = q->base+q->num - p->base;
 				q->num = base - q->base;
-- 
2.15.1

[PATCH 2/2] pcmcia/rsrc_nonstatic: Improve a size determination in three functions

[SF Markus Elfring]

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 28 Dec 2017 21:07:39 +0100

Replace the specification of data structures by variable references
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/pcmcia/rsrc_nonstatic.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index 91dc559e4a81..50169b00f389 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -120,7 +120,7 @@ static int add_interval(struct resource_map *map, u_long base, u_long num)
 		if ((p->next == map) || (p->next->base > base+num-1))
 			break;
 	}
-	q = kmalloc(sizeof(struct resource_map), GFP_KERNEL);
+	q = kmalloc(sizeof(*q), GFP_KERNEL);
 	if (!q)
 		return -ENOMEM;
 
@@ -157,8 +157,7 @@ static int sub_interval(struct resource_map *map, u_long base, u_long num)
 				q->num = base - q->base;
 			} else {
 				/* Split the block into two pieces */
-				p = kmalloc(sizeof(struct resource_map),
-					GFP_KERNEL);
+				p = kmalloc(sizeof(*p), GFP_KERNEL);
 				if (!p)
 					return -ENOMEM;
 
@@ -1014,9 +1013,8 @@ static inline int nonstatic_autoadd_resources(struct pcmcia_socket *s)
 
 static int nonstatic_init(struct pcmcia_socket *s)
 {
-	struct socket_data *data;
+	struct socket_data *data = kzalloc(sizeof(*data), GFP_KERNEL);
 
-	data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
-- 
2.15.1