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skypopen: slightly improve OSS audio driver

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Giovanni Maruzzelli 2010-12-13 07:33:37 -06:00
parent 0e83cbe5ca
commit 6e310ef8fc
1 changed files with 17 additions and 17 deletions
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34
src/mod/endpoints/mod_skypopen/oss/main.c
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@ -61,14 +61,14 @@ MODULE_LICENSE("Dual BSD/GPL");
static struct scull_dev *scull_devices; /* allocated in scull_init_module */ static struct scull_dev *scull_devices; /* allocated in scull_init_module */
#define GIOVA_BLK 1920 #define GIOVA_BLK 1920
#define GIOVA_SLEEP 20000 #define GIOVA_SLEEP 20
void my_timer_callback_inq( unsigned long data ) void my_timer_callback_inq( unsigned long data )
{ {
struct scull_dev *dev = (void *)data; struct scull_dev *dev = (void *)data;
wake_up_interruptible(&dev->inq); wake_up_interruptible(&dev->inq);
mod_timer( &dev->timer_inq, jiffies + msecs_to_jiffies(GIOVA_SLEEP/1000) ); mod_timer( &dev->timer_inq, jiffies + msecs_to_jiffies(GIOVA_SLEEP) );
} }
@ -77,7 +77,7 @@ void my_timer_callback_outq( unsigned long data )
struct scull_dev *dev = (void *)data; struct scull_dev *dev = (void *)data;
wake_up_interruptible(&dev->outq); wake_up_interruptible(&dev->outq);
mod_timer( &dev->timer_outq, jiffies + msecs_to_jiffies(GIOVA_SLEEP/1000) ); mod_timer( &dev->timer_outq, jiffies + msecs_to_jiffies(GIOVA_SLEEP) );
} }
/* The clone-specific data structure includes a key field */ /* The clone-specific data structure includes a key field */
@ -117,9 +117,9 @@ static struct scull_dev *scull_c_lookfor_device(dev_t key)
printk(" Timer installing\n"); printk(" Timer installing\n");
setup_timer( &lptr->device.timer_inq, my_timer_callback_inq, (long int)lptr ); setup_timer( &lptr->device.timer_inq, my_timer_callback_inq, (long int)lptr );
setup_timer( &lptr->device.timer_outq, my_timer_callback_outq, (long int)lptr ); setup_timer( &lptr->device.timer_outq, my_timer_callback_outq, (long int)lptr );
printk( "Starting timer to fire in %dms (%ld)\n", GIOVA_SLEEP/1000, jiffies ); printk( "Starting timer to fire in %dms (%ld)\n", GIOVA_SLEEP, jiffies );
mod_timer( &lptr->device.timer_inq, jiffies + msecs_to_jiffies(GIOVA_SLEEP/1000) ); mod_timer( &lptr->device.timer_inq, jiffies + msecs_to_jiffies(GIOVA_SLEEP) );
mod_timer( &lptr->device.timer_outq, jiffies + msecs_to_jiffies(GIOVA_SLEEP/1000) ); mod_timer( &lptr->device.timer_outq, jiffies + msecs_to_jiffies(GIOVA_SLEEP) );
/* place it in the list */ /* place it in the list */
list_add(&lptr->list, &scull_c_list); list_add(&lptr->list, &scull_c_list);
@ -170,11 +170,11 @@ ssize_t scull_read(struct file *filp, char __user *buf, size_t count,
{ {
struct scull_dev *dev = filp->private_data; struct scull_dev *dev = filp->private_data;
DEFINE_WAIT(wait); DEFINE_WAIT(wait);
prepare_to_wait(&dev->inq, &wait, TASK_INTERRUPTIBLE); prepare_to_wait(&dev->inq, &wait, TASK_INTERRUPTIBLE);
schedule(); schedule();
finish_wait(&dev->inq, &wait); finish_wait(&dev->inq, &wait);
//memset(buf, 255, count); //memset(buf, 255, count);
return count; return count;
@ -184,10 +184,10 @@ ssize_t scull_write(struct file *filp, const char __user *buf, size_t count,
loff_t *f_pos) loff_t *f_pos)
{ {
struct scull_dev *dev = filp->private_data; struct scull_dev *dev = filp->private_data;
DEFINE_WAIT(wait); DEFINE_WAIT(wait);
prepare_to_wait(&dev->outq, &wait, TASK_INTERRUPTIBLE); prepare_to_wait(&dev->outq, &wait, TASK_INTERRUPTIBLE);
schedule(); schedule();
finish_wait(&dev->outq, &wait); finish_wait(&dev->outq, &wait);
return count; return count;
@ -252,7 +252,7 @@ void scull_cleanup_module(void)
} }
/* And all the cloned devices */ /* And all the cloned devices */
list_for_each_entry_safe(lptr, next, &scull_c_list, list) { list_for_each_entry_safe(lptr, next, &scull_c_list, list) {
ret= del_timer( &lptr->device.timer_inq ); ret= del_timer( &lptr->device.timer_inq );
if (ret) printk("The inq timer was still in use...\n"); if (ret) printk("The inq timer was still in use...\n");
@ -261,7 +261,7 @@ void scull_cleanup_module(void)
list_del(&lptr->list); list_del(&lptr->list);
kfree(lptr); kfree(lptr);
} }
printk("Timer uninstalling\n"); printk("Timer uninstalling\n");
/* cleanup_module is never called if registering failed */ /* cleanup_module is never called if registering failed */
unregister_chrdev_region(devno, scull_nr_devs); unregister_chrdev_region(devno, scull_nr_devs);