115 static ssize_t pp_read(struct file *file, char __user *buf, size_t count,  in pp_read()  argument
118 	unsigned int minor = iminor(file_inode(file));  in pp_read()
119 	struct pp_struct *pp = file->private_data;  in pp_read()
142 			    (file->f_flags & O_NONBLOCK) ?  in pp_read()
170 		if (file->f_flags & O_NONBLOCK) {  in pp_read()
193 static ssize_t pp_write(struct file *file, const char __user *buf,  in pp_write()  argument
196 	unsigned int minor = iminor(file_inode(file));  in pp_write()
197 	struct pp_struct *pp = file->private_data;  in pp_write()
218 			    (file->f_flags & O_NONBLOCK) ?  in pp_write()
251 		if (file->f_flags & O_NONBLOCK) {  in pp_write()
352 static int pp_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)  in pp_do_ioctl()  argument
354 	unsigned int minor = iminor(file_inode(file));  in pp_do_ioctl()
355 	struct pp_struct *pp = file->private_data;  in pp_do_ioctl()
667 static long pp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)  in pp_ioctl()  argument
672 	ret = pp_do_ioctl(file, cmd, arg);  in pp_ioctl()
677 static int pp_open(struct inode *inode, struct file *file)  in pp_open()  argument
701 	file->private_data = pp;  in pp_open()
706 static int pp_release(struct inode *inode, struct file *file)  in pp_release()  argument
709 	struct pp_struct *pp = file->private_data;  in pp_release()
764 static __poll_t pp_poll(struct file *file, poll_table *wait)  in pp_poll()  argument
766 	struct pp_struct *pp = file->private_data;  in pp_poll()
769 	poll_wait(file, &pp->irq_wait, wait);  in pp_poll()