#include <linux/types.h>
#include <linux/wwan.h>
-#define WWAN_MAX_MINORS 256 /* 256 minors allowed with register_chrdev() */
+/* Maximum number of minors in use */
+#define WWAN_MAX_MINORS (1 << MINORBITS)
static DEFINE_MUTEX(wwan_register_lock); /* WWAN device create|remove lock */
static DEFINE_IDA(minors); /* minors for WWAN port chardevs */
return PTR_ERR(wwan_class);
/* chrdev used for wwan ports */
- wwan_major = register_chrdev(0, "wwan_port", &wwan_port_fops);
+ wwan_major = __register_chrdev(0, 0, WWAN_MAX_MINORS, "wwan_port",
+ &wwan_port_fops);
if (wwan_major < 0) {
class_destroy(wwan_class);
return wwan_major;
static void __exit wwan_exit(void)
{
- unregister_chrdev(wwan_major, "wwan_port");
+ __unregister_chrdev(wwan_major, 0, WWAN_MAX_MINORS, "wwan_port");
class_destroy(wwan_class);
}