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From: Julia Lawall on 10 Mar 2010 16:20
From: Julia Lawall <julia(a)diku.dk>

kasprintf combines kmalloc and sprintf, and takes care of the size
calculation itself.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression a,flag;
expression list args;
statement S;
@@

a =
- \(kmalloc\|kzalloc\)(...,flag)
+ kasprintf(flag,args)
<... when != a
if (a == NULL || ...) S
...>
- sprintf(a,args);
// </smpl>

Signed-off-by: Julia Lawall <julia(a)diku.dk>

---
drivers/base/module.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff -u -p a/drivers/base/module.c b/drivers/base/module.c
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -14,12 +14,10 @@ static char *make_driver_name(struct dev
{
char *driver_name;

- driver_name = kmalloc(strlen(drv->name) + strlen(drv->bus->name) + 2,
- GFP_KERNEL);
+ driver_name = kasprintf(GFP_KERNEL, "%s:%s", drv->bus->name, drv->name);
if (!driver_name)
return NULL;

- sprintf(driver_name, "%s:%s", drv->bus->name, drv->name);
return driver_name;
}

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