// SPDX-License-Identifier: GPL-2.0 #include <linux/proc_fs.h> #include "fb_internal.h" static struct proc_dir_entry *fb_proc_dir_entry; static void *fb_seq_start(struct seq_file *m, loff_t *pos){	mutex_lock(&registration_lock); 	return (*pos < FB_MAX) ? pos : NULL;} static void fb_seq_stop(struct seq_file *m, void *v){	mutex_unlock(&registration_lock);} static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos){	(*pos)++; 	return (*pos < FB_MAX) ? pos : NULL;} static int fb_seq_show(struct seq_file *m, void *v){	int i = *(loff_t *)v;	struct fb_info *fi = registered_fb[i]; 	if (fi)		seq_printf(m, "%d %s\n", fi->node, fi->fix.id); 	return 0;} static const struct seq_operations __maybe_unused fb_proc_seq_ops = {	.start	= fb_seq_start,	.stop	= fb_seq_stop,	.next	= fb_seq_next,	.show	= fb_seq_show,}; int fb_init_procfs(void){	struct proc_dir_entry *proc; 	proc = proc_create_seq("fb", 0, NULL, &fb_proc_seq_ops);	if (!proc)		return -ENOMEM; 	fb_proc_dir_entry = proc; 	return 0;} void fb_cleanup_procfs(void){	proc_remove(fb_proc_dir_entry);}