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 | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index 2338468..a90a4a3 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1677,16 +1677,12 @@ int snd_seq_set_queue_tempo(int client, struct snd_seq_queue_tempo *tempo)
EXPORT_SYMBOL(snd_seq_set_queue_tempo);
-static int seq_ioctl_set_queue_tempo(struct snd_seq_client *client, - void __user *arg) +static int seq_ioctl_set_queue_tempo(struct snd_seq_client *client, void *arg) { + struct snd_seq_queue_tempo *tempo = arg; int result; - struct snd_seq_queue_tempo tempo; - - if (copy_from_user(&tempo, arg, sizeof(tempo))) - return -EFAULT;
- result = snd_seq_set_queue_tempo(client->number, &tempo); + result = snd_seq_set_queue_tempo(client->number, tempo); return result < 0 ? result : 0; }