diff options
Diffstat (limited to 'arch/um/drivers/hostaudio_kern.c')
| -rw-r--r-- | arch/um/drivers/hostaudio_kern.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index ae42695c3597..68142df76608 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -8,6 +8,7 @@ #include "linux/slab.h" #include "linux/sound.h" #include "linux/soundcard.h" +#include "linux/smp_lock.h" #include "asm/uaccess.h" #include "init.h" #include "os.h" @@ -198,7 +199,10 @@ static int hostaudio_open(struct inode *inode, struct file *file) if (file->f_mode & FMODE_WRITE) w = 1; + lock_kernel(); ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); + unlock_kernel(); + if (ret < 0) { kfree(state); return ret; @@ -254,7 +258,9 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file) if (file->f_mode & FMODE_WRITE) w = 1; + lock_kernel(); ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0); + unlock_kernel(); if (ret < 0) { printk(KERN_ERR "hostaudio_open_mixdev failed to open '%s', " |