From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 24 Oct 2017 20:52:19 +0200
* 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.
* Return directly after a call of the function "kzalloc" failed
at the beginning of the function "hidraw_open".
* Delete the jump target "out" which became unnecessary
with this refactoring.
Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hidraw.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 5fbe0f81ab2e..26fbf9e82f84 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -269,10 +269,9 @@ static int hidraw_open(struct inode *inode, struct file *file)
unsigned long flags;
int err = 0;
- if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {
- err = -ENOMEM;
- goto out;
- }
+ list = kzalloc(sizeof(*list), GFP_KERNEL);
+ if (!list)
+ return -ENOMEM;
mutex_lock(&minors_lock);
if (!hidraw_table[minor] || !hidraw_table[minor]->exist) {
@@ -304,7 +303,6 @@ static int hidraw_open(struct inode *inode, struct file *file)
file->private_data = list;
out_unlock:
mutex_unlock(&minors_lock);
-out:
if (err < 0)
kfree(list);
return err;
@@ -513,7 +511,7 @@ int hidraw_connect(struct hid_device *hid)
/* we accept any HID device, all applications */
- dev = kzalloc(sizeof(struct hidraw), GFP_KERNEL);
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
--
2.14.3
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