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| author | Arnd Bergmann <arnd@arndb.de> | 2010-07-11 12:16:36 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-07-12 17:41:05 +0200 |
| commit | 90dc763fef4c869e60b2a7ad92e1a7dab68575ea (patch) | |
| tree | ab3757f14a6d84e36afa36ac5f325fd316d4e197 /sound/oss/msnd_pinnacle.c | |
| parent | 395c61d19621e80b763810cc988416dc1b6bfd3e (diff) | |
| download | linux-stable-90dc763fef4c869e60b2a7ad92e1a7dab68575ea.tar.gz linux-stable-90dc763fef4c869e60b2a7ad92e1a7dab68575ea.tar.bz2 linux-stable-90dc763fef4c869e60b2a7ad92e1a7dab68575ea.zip | |
sound: push BKL into open functions
This moves the lock_kernel() call from soundcore_open
to the individual OSS device drivers, where we can deal
with it one driver at a time if needed, or just kill
off the drivers.
All core components in ALSA already provide
adequate locking in their open()-functions
and do not require the big kernel lock, so
there is no need to add the BKL there.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/oss/msnd_pinnacle.c')
| -rw-r--r-- | sound/oss/msnd_pinnacle.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sound/oss/msnd_pinnacle.c b/sound/oss/msnd_pinnacle.c index a1e3f9671bea..153d822bf9a3 100644 --- a/sound/oss/msnd_pinnacle.c +++ b/sound/oss/msnd_pinnacle.c @@ -756,12 +756,15 @@ static int dev_open(struct inode *inode, struct file *file) int minor = iminor(inode); int err = 0; + lock_kernel(); if (minor == dev.dsp_minor) { if ((file->f_mode & FMODE_WRITE && test_bit(F_AUDIO_WRITE_INUSE, &dev.flags)) || (file->f_mode & FMODE_READ && - test_bit(F_AUDIO_READ_INUSE, &dev.flags))) - return -EBUSY; + test_bit(F_AUDIO_READ_INUSE, &dev.flags))) { + err = -EBUSY; + goto out; + } if ((err = dsp_open(file)) >= 0) { dev.nresets = 0; @@ -782,7 +785,8 @@ static int dev_open(struct inode *inode, struct file *file) /* nothing */ } else err = -EINVAL; - +out: + unlock_kernel(); return err; } |