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| author | Takashi Iwai <tiwai@suse.de> | 2010-04-13 11:49:04 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-04-13 12:01:21 +0200 |
| commit | 02f4865fa415a87de28cc8c2e4d798ff46be1cf8 (patch) | |
| tree | 7d8e1087fd17e0390439ad4fe3cdd59477c3032c /sound/core/timer.c | |
| parent | ALSA: info - Implement common llseek for binary mode (diff) | |
| download | linux-02f4865fa415a87de28cc8c2e4d798ff46be1cf8.tar.xz linux-02f4865fa415a87de28cc8c2e4d798ff46be1cf8.zip | |
ALSA: core - Define llseek fops
Set no_llseek to llseek file ops of each sound component (but for hwdep).
This avoids the implicit BKL invocation via generic_file_llseek() used
as default when fops.llseek is NULL.
Also call nonseekable_open() at each open ops to ensure the file flags
have no seek bit.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/timer.c')
| -rw-r--r-- | sound/core/timer.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/core/timer.c b/sound/core/timer.c index 73943651caed..8c9a661df05b 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1237,6 +1237,11 @@ static void snd_timer_user_tinterrupt(struct snd_timer_instance *timeri, static int snd_timer_user_open(struct inode *inode, struct file *file) { struct snd_timer_user *tu; + int err; + + err = nonseekable_open(inode, file); + if (err < 0) + return err; tu = kzalloc(sizeof(*tu), GFP_KERNEL); if (tu == NULL) @@ -1921,6 +1926,7 @@ static const struct file_operations snd_timer_f_ops = .read = snd_timer_user_read, .open = snd_timer_user_open, .release = snd_timer_user_release, + .llseek = no_llseek, .poll = snd_timer_user_poll, .unlocked_ioctl = snd_timer_user_ioctl, .compat_ioctl = snd_timer_user_ioctl_compat, |