/* Function Description: open device. Mapped to user open().
* Return: Always 0.
*/
static int
envctrl_open(struct inode *inode, struct file *file)
{
cycle_kernel_lock();
file->private_data = NULL;
return 0;
}
static int tgt_open(struct inode *inode, struct file *file)
{
tx_ring.tr_idx = rx_ring.tr_idx = 0;
cycle_kernel_lock();
return 0;
}
static int d7s_open(struct inode *inode, struct file *f)
{
if (D7S_MINOR != iminor(inode))
return -ENODEV;
cycle_kernel_lock();
atomic_inc(&d7s_users);
return 0;
}
static int eisa_eeprom_open(struct inode *inode, struct file *file)
{
cycle_kernel_lock();
if (file->f_mode & FMODE_WRITE)
return -EINVAL;
return 0;
}
static int lcd_open(struct inode *inode, struct file *file)
{
cycle_kernel_lock();
if (!lcd_present)
return -ENXIO;
else
return 0;
}
static int efi_rtc_open(struct inode *inode, struct file *file)
{
/*
* nothing special to do here
* We do accept multiple open files at the same time as we
* synchronize on the per call operation.
*/
cycle_kernel_lock();
return 0;
}
static int gpio_open(struct inode *inode, struct file *file)
{
unsigned int pin;
cycle_kernel_lock();
pin = iminor(inode);
if (pin >= giu_nr_pins)
return -EBADF;
return nonseekable_open(inode, file);
}
static int cs5535_gpio_open(struct inode *inode, struct file *file)
{
u32 m = iminor(inode);
cycle_kernel_lock();
if ((mask & (1 << m)) == 0)
return -EINVAL;
return nonseekable_open(inode, file);
}
static int rng_dev_open (struct inode *inode, struct file *filp)
{
cycle_kernel_lock();
/* enforce read-only access to this chrdev */
if ((filp->f_mode & FMODE_READ) == 0)
return -EINVAL;
if ((filp->f_mode & FMODE_WRITE) != 0)
return -EINVAL;
return 0;
}
static int pc8736x_gpio_open(struct inode *inode, struct file *file)
{
unsigned m = iminor(inode);
file->private_data = &pc8736x_gpio_ops;
cycle_kernel_lock();
dev_dbg(&pdev->dev, "open %d\n", m);
if (m >= PC8736X_GPIO_CT)
return -EINVAL;
return nonseekable_open(inode, file);
}
static int mwave_open(struct inode *inode, struct file *file)
{
unsigned int retval = 0;
PRINTK_3(TRACE_MWAVE,
"mwavedd::mwave_open, entry inode %p file %p\n",
inode, file);
PRINTK_2(TRACE_MWAVE,
"mwavedd::mwave_open, exit return retval %x\n", retval);
cycle_kernel_lock();
return retval;
}
static int ipmi_open(struct inode *ino, struct file *filep)
{
switch (iminor(ino)) {
case WATCHDOG_MINOR:
if (test_and_set_bit(0, &ipmi_wdog_open))
return -EBUSY;
cycle_kernel_lock();
ipmi_start_timer_on_heartbeat = 1;
return nonseekable_open(ino, filep);
default:
return (-ENODEV);
}
}
static int
i2c_open(struct inode *inode, struct file *filp)
{
cycle_kernel_lock();
return 0;
}
static int
anslcd_open( struct inode * inode, struct file * file )
{
cycle_kernel_lock();
return 0;
}