diff options
author | Greg KH <gregkh@linuxfoundation.org> | 2012-02-24 15:38:14 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-28 11:21:48 -0800 |
commit | d1cddb4a8e9b09c33158acae05c48069d74fa4d0 (patch) | |
tree | e1ab740cc4a6905ef0a520dd79ecdbac041585a1 /include/linux/usb | |
parent | 03892d5fefbe7d4df68466bd4cfda86fac84ebd8 (diff) |
USB: create module_usb_serial_driver macro
Now that Alan Stern has cleaned up the usb serial driver registration,
we have the ability to create a module_usb_serial_driver macro to make
things a bit simpler, like the other *_driver macros created.
But, as we need two functions here, we can't reuse the existing
module_driver() macro, so we need to roll our own.
Here's a patch implementing module_usb_serial_driver() and it converts
the pl2303 driver to use it, showing a nice cleanup.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
-rw-r--r-- | include/linux/usb/serial.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 34c06a723dc..7b1db841e2a 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -406,5 +406,33 @@ do { \ } \ } 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() + * + * Note, we can't use the generic module_driver() call here, due to the + * two parameters in the usb_serial_* functions, so we roll our own here + * :( + */ +#define module_usb_serial_driver(__usb_driver, __serial_drivers) \ +static int __init usb_serial_driver_init(void) \ +{ \ + return usb_serial_register_drivers(&(__usb_driver), \ + (__serial_drivers)); \ +} \ +module_init(usb_serial_driver_init); \ +static void __exit usb_serial_driver_exit(void) \ +{ \ + return usb_serial_deregister_drivers(&(__usb_driver), \ + (__serial_drivers)); \ +} \ +module_exit(usb_serial_driver_exit); + #endif /* __LINUX_USB_SERIAL_H */ |