summaryrefslogtreecommitdiff
path: root/include/linux/usb/serial.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/usb/serial.h')
-rw-r--r--include/linux/usb/serial.h36
1 files changed, 34 insertions, 2 deletions
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 4267a9c717ba..fbb666b1b670 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -300,8 +300,10 @@ struct usb_serial_driver {
#define to_usb_serial_driver(d) \
container_of(d, struct usb_serial_driver, driver)
-extern int usb_serial_register(struct usb_serial_driver *driver);
-extern void usb_serial_deregister(struct usb_serial_driver *driver);
+extern int usb_serial_register_drivers(struct usb_driver *udriver,
+ struct usb_serial_driver * const serial_drivers[]);
+extern void usb_serial_deregister_drivers(struct usb_driver *udriver,
+ struct usb_serial_driver * const serial_drivers[]);
extern void usb_serial_port_softint(struct usb_serial_port *port);
extern int usb_serial_probe(struct usb_interface *iface,
@@ -389,5 +391,35 @@ do { \
printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \
} while (0)
+/*
+ * Macro for reporting errors in write path to avoid inifinite loop
+ * when port is used as a console.
+ */
+#define dev_err_console(usport, fmt, ...) \
+do { \
+ static bool __print_once; \
+ struct usb_serial_port *__port = (usport); \
+ \
+ if (!__port->port.console || !__print_once) { \
+ __print_once = true; \
+ dev_err(&__port->dev, fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+/*
+ * module_usb_serial_driver() - Helper macro for registering a USB Serial driver
+ * @__usb_driver: usb_driver struct to register
+ * @__serial_drivers: list of usb_serial drivers to register
+ *
+ * Helper macro for USB serial drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ *
+ */
+#define module_usb_serial_driver(__usb_driver, __serial_drivers) \
+ module_driver(__usb_driver, usb_serial_register_drivers, \
+ usb_serial_deregister_drivers, __serial_drivers)
+
#endif /* __LINUX_USB_SERIAL_H */