diff options
author | Arnd Bergmann <arnd@arndb.de> | 2010-09-14 19:53:41 (GMT) |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2010-09-14 21:14:50 (GMT) |
commit | 645ef9ef1fc0ff70456495b1e21d3420b7b08541 (patch) | |
tree | f5e5df85076f397690437f09cb56688b06a03dbf /sound/oss/au1550_ac97.c | |
parent | 7b6c3a34e93aafc5dd9adc7dee87c7fa61d8bdbb (diff) | |
download | linux-645ef9ef1fc0ff70456495b1e21d3420b7b08541.tar.xz |
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/au1550_ac97.c')
-rw-r--r-- | sound/oss/au1550_ac97.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c index 8a12621..a8f626d 100644 --- a/sound/oss/au1550_ac97.c +++ b/sound/oss/au1550_ac97.c @@ -43,7 +43,6 @@ #include <linux/sound.h> #include <linux/slab.h> #include <linux/soundcard.h> -#include <linux/smp_lock.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -77,6 +76,7 @@ /* Boot options * 0 = no VRA, 1 = use VRA if codec supports it */ +static DEFINE_MUTEX(au1550_ac97_mutex); static int vra = 1; module_param(vra, bool, 0); MODULE_PARM_DESC(vra, "if 1 use VRA if codec supports it"); @@ -798,9 +798,9 @@ au1550_llseek(struct file *file, loff_t offset, int origin) static int au1550_open_mixdev(struct inode *inode, struct file *file) { - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); file->private_data = &au1550_state; - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return 0; } @@ -824,9 +824,9 @@ au1550_ioctl_mixdev(struct file *file, unsigned int cmd, unsigned long arg) struct ac97_codec *codec = s->codec; int ret; - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); ret = mixdev_ioctl(codec, cmd, arg); - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return ret; } @@ -1255,7 +1255,7 @@ au1550_mmap(struct file *file, struct vm_area_struct *vma) unsigned long size; int ret = 0; - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); mutex_lock(&s->sem); if (vma->vm_flags & VM_WRITE) db = &s->dma_dac; @@ -1283,7 +1283,7 @@ au1550_mmap(struct file *file, struct vm_area_struct *vma) db->mapped = 1; out: mutex_unlock(&s->sem); - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return ret; } @@ -1781,9 +1781,9 @@ au1550_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { int ret; - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); ret = au1550_ioctl(file, cmd, arg); - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return ret; } @@ -1804,7 +1804,7 @@ au1550_open(struct inode *inode, struct file *file) #endif file->private_data = s; - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); /* wait for device to become free */ mutex_lock(&s->open_mutex); while (s->open_mode & file->f_mode) { @@ -1861,7 +1861,7 @@ au1550_open(struct inode *inode, struct file *file) out: mutex_unlock(&s->open_mutex); out2: - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return ret; } @@ -1870,12 +1870,12 @@ au1550_release(struct inode *inode, struct file *file) { struct au1550_state *s = file->private_data; - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); if (file->f_mode & FMODE_WRITE) { - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); drain_dac(s, file->f_flags & O_NONBLOCK); - lock_kernel(); + mutex_lock(&au1550_ac97_mutex); } mutex_lock(&s->open_mutex); @@ -1892,7 +1892,7 @@ au1550_release(struct inode *inode, struct file *file) s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE)); mutex_unlock(&s->open_mutex); wake_up(&s->open_wait); - unlock_kernel(); + mutex_unlock(&au1550_ac97_mutex); return 0; } |