On 2012-05-24 12:16, Dan Carpenter wrote:
On Thu, May 24, 2012 at 11:57:44AM +0100, Ian Abbott wrote:
On 2012-05-24 11:28, Dan Carpenter wrote:
This function is more complicated than it needs to be because of the
consts. It's not worth saving them because we drop the consts anyway
when we return (void *)name_ptr.
Signed-off-by: Dan Carpenter<dan.carpenter@xxxxxxxxxx>
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index 1c3d638..a8f576d 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -304,14 +304,13 @@ static int postconfig(struct comedi_device *dev)
* that register their supported board names */
static void *comedi_recognize(struct comedi_driver *driv, const char *name)
{
- unsigned i;
- const char *const *name_ptr = driv->board_name;
+ char **name_ptr = (char **)driv->board_name;
+ int i;
+
for (i = 0; i< driv->num_names; i++) {
if (strcmp(*name_ptr, name) == 0)
- return (void *)name_ptr;
- name_ptr =
- (const char *const *)((const char *)name_ptr +
- driv->offset);
+ return name_ptr;
+ name_ptr = (char **)((void *)name_ptr + driv->offset);
}
return NULL;
You could simplify it further by keeping one of the consts:
static void *comedi_recognize(struct comedi_driver *driv, const char *name)
{
unsigned i;
const char **name_ptr = driv->board_name;
for (i = 0; i< driv->num_names; i++) {
if (strcmp(*name_ptr, name) == 0)
return name_ptr;
name_ptr = (void *)name_ptr + driv->offset;
}
return NULL;
}
Sure. I'll resend.
Actually, my version gives a warning about a dropped qualifier, so the
initializer of name_ptr would need a cast after all. You could keep
your version but remove the casts from (void *) when converting to the
other pointer types.
static void *comedi_recognize(struct comedi_driver *driv, const char *name)
{
unsigned i;
char **name_ptr = (char **)driv->board_name;
for (i = 0; i < driv->num_names; i++) {
if (strcmp(*name_ptr, name) == 0)
return name_ptr;
name_ptr = (void *)name_ptr + driv->offset;
}
return NULL;
}
--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@xxxxxxxxx> )=-
-=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
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