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Date: Sat, 25 Feb 2012 12:53:51 +0100 From: Lars-Peter Clausen <lars@...afoo.de> To: Greg KH <gregkh@...uxfoundation.org> CC: Alan Stern <stern@...land.harvard.edu>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC] USB: create module_usb_serial_driver macro On 02/25/2012 12:38 AM, Greg KH wrote: > 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. > > Lars-Peter, or anyone else, am I missing something here and we can use > module_driver() somehow, or even modify it, to work for subsystems that > need 2 parameters for their function calls to register/deregister? > I suppose we can make module_driver a variadic macro and pass any additional parameters to the register and unregister functions. Patch attached. - Lars 8<-------------------------------------------------------------------->8 >From 0d731970249b787748eccd6e81890c012a44e5a6 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen <lars@...afoo.de> Date: Sat, 25 Feb 2012 11:25:58 +0100 Subject: [PATCH] driver-core: Allow additional parameters for module_driver Allow module_driver take additional parameters which will be passed to the register and unregister function calls. This allows it to be used in cases where additional parameters are required (e.g. usb_serial_register_drivers). Signed-off-by: Lars-Peter Clausen <lars@...afoo.de> --- include/linux/device.h | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/device.h b/include/linux/device.h index b63fb39..bccccef 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -1007,19 +1007,20 @@ extern long sysfs_deprecated; * @__driver: driver name * @__register: register function for this driver type * @__unregister: unregister function for this driver type + * @...: Additional arguments to be passed to __register and __unregister. * * Use this macro to construct bus specific macros for registering * drivers, and do not use it on its own. */ -#define module_driver(__driver, __register, __unregister) \ +#define module_driver(__driver, __register, __unregister, ...) \ static int __init __driver##_init(void) \ { \ - return __register(&(__driver)); \ + return __register(&(__driver) , ##__VA_ARGS__); \ } \ module_init(__driver##_init); \ static void __exit __driver##_exit(void) \ { \ - __unregister(&(__driver)); \ + __unregister(&(__driver) , ##__VA_ARGS__); \ } \ module_exit(__driver##_exit); -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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