@@ -1551,28 +1551,22 @@ static int snd_seq_ioctl_delete_queue(struct snd_seq_client *client, void *arg)
/* GET_QUEUE_INFO ioctl() */
static int snd_seq_ioctl_get_queue_info(struct snd_seq_client *client,
- void __user *arg)
+ 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 = queueptr(info.queue);
+ q = queueptr(info->queue);
if (q == NULL)
return -EINVAL;
- memset(&info, 0, sizeof(info));
- info.queue = q->queue;
- info.owner = q->owner;
- info.locked = q->locked;
- strlcpy(info.name, q->name, sizeof(info.name));
+ memset(info, 0, sizeof(*info));
+ info->queue = q->queue;
+ info->owner = q->owner;
+ info->locked = q->locked;
+ strlcpy(info->name, q->name, sizeof(info->name));
queuefree(q);
- if (copy_to_user(arg, &info, sizeof(info)))
- return -EFAULT;
-
return 0;
}
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@sakamocchi.jp> --- sound/core/seq/seq_clientmgr.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-)