/*
* file_operations
*/
static int dev_uart_open(struct node *node, struct file_desc *desc, int flags) {
struct uart *uart_dev = uart_dev_lookup(node->name);
if (!uart_dev) {
return -ENOENT;
}
assert(desc);
desc->file_info = uart_dev;
idesc_serial_create(desc, uart_dev, flags);
return 0;
}
static struct idesc *uart_fsop_open(struct inode *node, struct idesc *desc) {
struct device_module *cdev;
struct idesc *idesc;
int res;
cdev = node->i_data;
idesc = idesc_serial_create(cdev->dev_data, 0);
if (err(idesc)) {
return idesc;
}
res = uart_open(cdev->dev_data);
if (res) {
return err_ptr(-res);
}
return idesc;
}
static struct idesc *uart_fsop_open(struct node *node, struct file_desc *file_desc, int flags) {
struct uart *uart;
struct idesc *idesc;
int res;
uart = uart_dev_lookup(node->name);
if (!uart) {
return err_ptr(ENOENT);
}
idesc = idesc_serial_create(uart, flags);
if (err(idesc)) {
return idesc;
}
res = uart_open(uart);
if (res) {
return err_ptr(-res);
}
return idesc;
}
