From 345d0b1964df83a6c3fff815fabd34e37265581f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 5 Feb 2009 09:10:20 +0100 Subject: ALSA: hwdep - Make open callback optional Don't require the open callback as mandatory. Now all hwdeps ops can be optional. Signed-off-by: Takashi Iwai --- sound/core/hwdep.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'sound') diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index 195cafc5a553..a70ee7f1ed98 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -99,9 +99,6 @@ static int snd_hwdep_open(struct inode *inode, struct file * file) if (hw == NULL) return -ENODEV; - if (!hw->ops.open) - return -ENXIO; - if (!try_module_get(hw->card->module)) return -EFAULT; @@ -113,6 +110,10 @@ static int snd_hwdep_open(struct inode *inode, struct file * file) err = -EBUSY; break; } + if (!hw->ops.open) { + err = 0; + break; + } err = hw->ops.open(hw, file); if (err >= 0) break; @@ -151,7 +152,7 @@ static int snd_hwdep_open(struct inode *inode, struct file * file) static int snd_hwdep_release(struct inode *inode, struct file * file) { - int err = -ENXIO; + int err = 0; struct snd_hwdep *hw = file->private_data; struct module *mod = hw->card->module; -- cgit v1.2.3