[PATCH 4/5] ALSA: core: Drop async signal support

[Takashi Iwai <tiwai@suse.de>]

Now fasync support is dropped from all ALSA interfaces, and we can
drop the fasync workaround at the card disconnection code, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/core/init.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/sound/core/init.c b/sound/core/init.c
index 3ac95c66a4b5..899bfe838a91 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -432,11 +432,8 @@ static int snd_disconnect_release(struct inode *inode, struct file *file)
 	}
 	spin_unlock(&shutdown_lock);
 
-	if (likely(df)) {
-		if ((file->f_flags & FASYNC) && df->disconnected_f_op->fasync)
-			df->disconnected_f_op->fasync(-1, file, 0);
+	if (likely(df))
 		return df->disconnected_f_op->release(inode, file);
-	}
 
 	panic("%s(%p, %p) failed!", __func__, inode, file);
 }
@@ -457,11 +454,6 @@ static int snd_disconnect_mmap(struct file *file, struct vm_area_struct *vma)
 	return -ENODEV;
 }
 
-static int snd_disconnect_fasync(int fd, struct file *file, int on)
-{
-	return -ENODEV;
-}
-
 static const struct file_operations snd_shutdown_f_ops =
 {
 	.owner = 	THIS_MODULE,
@@ -475,7 +467,6 @@ static const struct file_operations snd_shutdown_f_ops =
 	.compat_ioctl = snd_disconnect_ioctl,
 #endif
 	.mmap =		snd_disconnect_mmap,
-	.fasync =	snd_disconnect_fasync
 };
 
 /**
-- 
2.35.3