64 static struct file *acpi_aml_active_reader;
469 static int acpi_aml_open(struct inode *inode, struct file *file)  in acpi_aml_open()  argument
483 	if ((file->f_flags & O_ACCMODE) != O_WRONLY) {  in acpi_aml_open()
493 			acpi_aml_active_reader = file;  in acpi_aml_open()
505 	if (acpi_aml_active_reader == file) {  in acpi_aml_open()
527 		if (acpi_aml_active_reader == file)  in acpi_aml_open()
535 static int acpi_aml_release(struct inode *inode, struct file *file)  in acpi_aml_release()  argument
539 	if (file == acpi_aml_active_reader) {  in acpi_aml_release()
606 static ssize_t acpi_aml_read(struct file *file, char __user *buf,  in acpi_aml_read()  argument
621 			if (file->f_flags & O_NONBLOCK)  in acpi_aml_read()
676 static ssize_t acpi_aml_write(struct file *file, const char __user *buf,  in acpi_aml_write()  argument
691 			if (file->f_flags & O_NONBLOCK)  in acpi_aml_write()
718 static __poll_t acpi_aml_poll(struct file *file, poll_table *wait)  in acpi_aml_poll()  argument
722 	poll_wait(file, &acpi_aml_io.wait, wait);  in acpi_aml_poll()