ALSA: fix locking in snd_pcm_open*() and snd_rawmidi_open*()

[linux-2.6-omap-h63xx.git] / sound / core / rawmidi.c

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index f7ea7287c59cd7edfcf75bc5795efce07d512d79..b917a9f981c7a276b3fbff94deece3f4ab8aa2f4 100644 (file)
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -418,7 +418,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
        mutex_lock(&rmidi->open_mutex);
        while (1) {
                subdevice = -1;
-               down_read(&card->controls_rwsem);
+               read_lock(&card->ctl_files_rwlock);
                list_for_each_entry(kctl, &card->ctl_files, list) {
                        if (kctl->pid == current->pid) {
                                subdevice = kctl->prefer_rawmidi_subdevice;
@@ -426,7 +426,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file)
                                        break;
                        }
                }
-               up_read(&card->controls_rwsem);
+               read_unlock(&card->ctl_files_rwlock);
                err = snd_rawmidi_kernel_open(rmidi->card, rmidi->device,
                                              subdevice, fflags, rawmidi_file);
                if (err >= 0)