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| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-15 16:39:03 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 14:05:50 -0600 |
| commit | 78a3c3d7c6b89085610edfe86f7790144afc737e (patch) | |
| tree | b3f4937a220655b7a6a5221bf8d544c8e62d19f7 /sound/sound_core.c | |
| parent | fc7f687a6878e19f7ce58cb8a65659cd2730b586 (diff) | |
| download | lwn-78a3c3d7c6b89085610edfe86f7790144afc737e.tar.gz lwn-78a3c3d7c6b89085610edfe86f7790144afc737e.zip | |
sound: cdev lock_kernel() pushdown
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'sound/sound_core.c')
| -rw-r--r-- | sound/sound_core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/sound_core.c b/sound/sound_core.c index 46daca175502..dcfc1d5ce631 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -37,6 +37,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/fs.h> @@ -464,6 +465,8 @@ int soundcore_open(struct inode *inode, struct file *file) struct sound_unit *s; const struct file_operations *new_fops = NULL; + lock_kernel (); + chain=unit&0x0F; if(chain==4 || chain==5) /* dsp/audio/dsp16 */ { @@ -511,9 +514,11 @@ int soundcore_open(struct inode *inode, struct file *file) file->f_op = fops_get(old_fops); } fops_put(old_fops); + unlock_kernel(); return err; } spin_unlock(&sound_loader_lock); + unlock_kernel(); return -ENODEV; } |