[PATCH] memstick: Use kmemdup instead of kmalloc and memcpy

From: Amitoj Kaur Chawla
Date: Thu Jun 23 2016 - 10:02:35 EST


Replace calls to kmalloc followed by a memcpy with a direct call to
kmemdup.

The Coccinelle semantic patch used to make this change is as follows:
@@
expression from,to,size,flag;
statement S;
@@

- to = \(kmalloc\|kzalloc\)(size,flag);
+ to = kmemdup(from,size,flag);
if (to==NULL || ...) S
- memcpy(to, from, size);

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@xxxxxxxxx>
---
drivers/memstick/core/mspro_block.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 922a750..0fb27d3 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -1033,12 +1033,11 @@ static int mspro_block_read_attributes(struct memstick_dev *card)
}
msb->attr_group.name = "media_attributes";

- buffer = kmalloc(attr_len, GFP_KERNEL);
+ buffer = kmemdup(attr, attr_len, GFP_KERNEL);
if (!buffer) {
rc = -ENOMEM;
goto out_free_attr;
}
- memcpy(buffer, (char *)attr, attr_len);

for (cnt = 0; cnt < attr_count; ++cnt) {
s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
--
1.9.1