26  * Handling of mouse minor numbers for kerneld:
66 static int misc_minor_alloc(int minor)  in misc_minor_alloc()  argument
70 	if (minor == MISC_DYNAMIC_MINOR) {  in misc_minor_alloc()
80 		/* specific minor, check if it is in dynamic or misc dynamic range  */  in misc_minor_alloc()
81 		if (minor < DYNAMIC_MINORS) {  in misc_minor_alloc()
82 			minor = DYNAMIC_MINORS - minor - 1;  in misc_minor_alloc()
83 			ret = ida_alloc_range(&misc_minors_ida, minor, minor, GFP_KERNEL);  in misc_minor_alloc()
84 		} else if (minor > MISC_DYNAMIC_MINOR) {  in misc_minor_alloc()
85 			ret = ida_alloc_range(&misc_minors_ida, minor, minor, GFP_KERNEL);  in misc_minor_alloc()
94 static void misc_minor_free(int minor)  in misc_minor_free()  argument
96 	if (minor < DYNAMIC_MINORS)  in misc_minor_free()
97 		ida_free(&misc_minors_ida, DYNAMIC_MINORS - minor - 1);  in misc_minor_free()
98 	else if (minor > MISC_DYNAMIC_MINOR)  in misc_minor_free()
99 		ida_free(&misc_minors_ida, minor);  in misc_minor_free()
123 	seq_printf(seq, "%3i %s\n", p->minor, p->name ? p->name : "");  in misc_seq_show()
138 	int minor = iminor(inode);  in misc_open()  local
146 		if (iter->minor != minor)  in misc_open()
155 		request_module("char-major-%d-%d", MISC_MAJOR, minor);  in misc_open()
159 			if (iter->minor != minor)  in misc_open()
211  *	Register a miscellaneous device with the kernel. If the minor
212  *	number is set to %MISC_DYNAMIC_MINOR a minor number is assigned
213  *	and placed in the minor field of the structure. For other cases
214  *	the minor number requested is used.
229 	bool is_dynamic = (misc->minor == MISC_DYNAMIC_MINOR);  in misc_register()
236 		int i = misc_minor_alloc(misc->minor);  in misc_register()
242 		misc->minor = i;  in misc_register()
248 			if (c->minor == misc->minor) {  in misc_register()
254 		i = misc_minor_alloc(misc->minor);  in misc_register()
261 	dev = MKDEV(MISC_MAJOR, misc->minor);  in misc_register()
267 		misc_minor_free(misc->minor);  in misc_register()
269 			misc->minor = MISC_DYNAMIC_MINOR;  in misc_register()
301 	device_destroy(&misc_class, MKDEV(MISC_MAJOR, misc->minor));  in misc_deregister()
302 	misc_minor_free(misc->minor);  in misc_deregister()