In former commit, actual operations of each ioctl command get argument
in kernel space. Copying from/to user space is performed outside of
the function.
This commit optimizes to the new design.
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
sound/core/seq/seq_clientmgr.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 70f75ec..9afb0aa 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1598,26 +1598,19 @@ static int seq_ioctl_set_queue_info(struct snd_seq_client *client, void *arg)
}
/* GET_NAMED_QUEUE ioctl() */
-static int seq_ioctl_get_named_queue(struct snd_seq_client *client,
- void __user *arg)
+static int seq_ioctl_get_named_queue(struct snd_seq_client *client, void *arg)
{
- struct snd_seq_queue_info info;
+ struct snd_seq_queue_info *info = arg;
struct snd_seq_queue *q;
- if (copy_from_user(&info, arg, sizeof(info)))
- return -EFAULT;
-
- q = snd_seq_queue_find_name(info.name);
+ q = snd_seq_queue_find_name(info->name);
if (q == NULL)
return -EINVAL;
- info.queue = q->queue;
- info.owner = q->owner;
- info.locked = q->locked;
+ info->queue = q->queue;
+ info->owner = q->owner;
+ info->locked = q->locked;
queuefree(q);
- if (copy_to_user(arg, &info, sizeof(info)))
- return -EFAULT;
-
return 0;
}
--
2.7.4
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