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| author |   Takashi Iwai <tiwai@suse.de> | 2009-02-05 09:10:20 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-02-05 09:10:20 +0100 |
| commit | 345d0b1964df83a6c3fff815fabd34e37265581f (patch) | |
| tree | ab110afece59b4036a5004dd58fe48e3bef5fe11 /sound/core/hwdep.c | |
| parent | Linux 2.6.29-rc3 (diff) | |
| download | linux-dev-345d0b1964df83a6c3fff815fabd34e37265581f.tar.xz linux-dev-345d0b1964df83a6c3fff815fabd34e37265581f.zip | |
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 <tiwai@suse.de>
Diffstat (limited to 'sound/core/hwdep.c')
| -rw-r--r-- | sound/core/hwdep.c | 9 |
1 files changed, 5 insertions, 4 deletions
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; |