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authorArnd Bergmann <arnd@arndb.de>2010-09-14 21:53:41 +0200
committerTakashi Iwai <tiwai@suse.de>2010-09-14 23:14:50 +0200
commit645ef9ef1fc0ff70456495b1e21d3420b7b08541 (patch)
treef5e5df85076f397690437f09cb56688b06a03dbf /sound/oss/vwsnd.c
parent7b6c3a34e93aafc5dd9adc7dee87c7fa61d8bdbb (diff)
sound: autoconvert trivial BKL users to private mutex
The usage of the BKL in the OSS sound drivers is trivial, and each of them only locks against itself, so it can be turned into per-driver mutexes. This is the script that was used for the conversion: file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/oss/vwsnd.c')
-rw-r--r--sound/oss/vwsnd.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/sound/oss/vwsnd.c b/sound/oss/vwsnd.c
index 8cd73cdd88af..643f1113b1d8 100644
--- a/sound/oss/vwsnd.c
+++ b/sound/oss/vwsnd.c
@@ -145,7 +145,6 @@
#include <linux/init.h>
#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
#include <linux/wait.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
@@ -160,6 +159,7 @@
#ifdef VWSND_DEBUG
+static DEFINE_MUTEX(vwsnd_mutex);
static int shut_up = 1;
/*
@@ -2891,11 +2891,11 @@ static long vwsnd_audio_ioctl(struct file *file,
vwsnd_dev_t *devc = (vwsnd_dev_t *) file->private_data;
int ret;
- lock_kernel();
+ mutex_lock(&vwsnd_mutex);
mutex_lock(&devc->io_mutex);
ret = vwsnd_audio_do_ioctl(file, cmd, arg);
mutex_unlock(&devc->io_mutex);
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return ret;
}
@@ -2922,7 +2922,7 @@ static int vwsnd_audio_open(struct inode *inode, struct file *file)
DBGE("(inode=0x%p, file=0x%p)\n", inode, file);
- lock_kernel();
+ mutex_lock(&vwsnd_mutex);
INC_USE_COUNT;
for (devc = vwsnd_dev_list; devc; devc = devc->next_dev)
if ((devc->audio_minor & ~0x0F) == (minor & ~0x0F))
@@ -2930,7 +2930,7 @@ static int vwsnd_audio_open(struct inode *inode, struct file *file)
if (devc == NULL) {
DEC_USE_COUNT;
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return -ENODEV;
}
@@ -2939,13 +2939,13 @@ static int vwsnd_audio_open(struct inode *inode, struct file *file)
mutex_unlock(&devc->open_mutex);
if (file->f_flags & O_NONBLOCK) {
DEC_USE_COUNT;
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return -EBUSY;
}
interruptible_sleep_on(&devc->open_wait);
if (signal_pending(current)) {
DEC_USE_COUNT;
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return -ERESTARTSYS;
}
mutex_lock(&devc->open_mutex);
@@ -2998,7 +2998,7 @@ static int vwsnd_audio_open(struct inode *inode, struct file *file)
file->private_data = devc;
DBGRV();
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return 0;
}
@@ -3012,7 +3012,7 @@ static int vwsnd_audio_release(struct inode *inode, struct file *file)
vwsnd_port_t *wport = NULL, *rport = NULL;
int err = 0;
- lock_kernel();
+ mutex_lock(&vwsnd_mutex);
mutex_lock(&devc->io_mutex);
{
DBGEV("(inode=0x%p, file=0x%p)\n", inode, file);
@@ -3040,7 +3040,7 @@ static int vwsnd_audio_release(struct inode *inode, struct file *file)
wake_up(&devc->open_wait);
DEC_USE_COUNT;
DBGR();
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return err;
}
@@ -3068,18 +3068,18 @@ static int vwsnd_mixer_open(struct inode *inode, struct file *file)
DBGEV("(inode=0x%p, file=0x%p)\n", inode, file);
INC_USE_COUNT;
- lock_kernel();
+ mutex_lock(&vwsnd_mutex);
for (devc = vwsnd_dev_list; devc; devc = devc->next_dev)
if (devc->mixer_minor == iminor(inode))
break;
if (devc == NULL) {
DEC_USE_COUNT;
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return -ENODEV;
}
file->private_data = devc;
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return 0;
}
@@ -3223,7 +3223,7 @@ static long vwsnd_mixer_ioctl(struct file *file,
DBGEV("(devc=0x%p, cmd=0x%x, arg=0x%lx)\n", devc, cmd, arg);
- lock_kernel();
+ mutex_lock(&vwsnd_mutex);
mutex_lock(&devc->mix_mutex);
{
if ((cmd & ~nrmask) == MIXER_READ(0))
@@ -3234,7 +3234,7 @@ static long vwsnd_mixer_ioctl(struct file *file,
retval = -EINVAL;
}
mutex_unlock(&devc->mix_mutex);
- unlock_kernel();
+ mutex_unlock(&vwsnd_mutex);
return retval;
}