From e0de88dc7ba2cfd352f0e472044a9176c0a91cf1 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 10 Feb 2022 15:49:43 +0200 Subject: pps: generators: pps_gen_parport: Switch to use module_parport_driver() Switch to use module_parport_driver() to reduce boilerplate code. Note, it doesn't matter when we check the module parameter. If it was writable we even would have more flexibility of changing it at runtime (when built-in the kernel) after this patch. Acked-by: Rodolfo Giometti Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220210134943.62026-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/pps/generators/pps_gen_parport.c | 42 ++++++-------------------------- 1 file changed, 7 insertions(+), 35 deletions(-) (limited to 'drivers/pps') diff --git a/drivers/pps/generators/pps_gen_parport.c b/drivers/pps/generators/pps_gen_parport.c index 6a1af7664f3b..b3e084b75c23 100644 --- a/drivers/pps/generators/pps_gen_parport.c +++ b/drivers/pps/generators/pps_gen_parport.c @@ -20,8 +20,6 @@ #include #include -#define DRVDESC "parallel port PPS signal generator" - #define SIGNAL 0 #define NO_SIGNAL PARPORT_CONTROL_STROBE @@ -180,6 +178,11 @@ static void parport_attach(struct parport *port) { struct pardev_cb pps_cb; + if (send_delay > SEND_DELAY_MAX) { + pr_err("delay value should be not greater then %d\n", SEND_DELAY_MAX); + return; + } + if (attached) { /* we already have a port */ return; @@ -231,39 +234,8 @@ static struct parport_driver pps_gen_parport_driver = { .detach = parport_detach, .devmodel = true, }; - -/* module staff */ - -static int __init pps_gen_parport_init(void) -{ - int ret; - - pr_info(DRVDESC "\n"); - - if (send_delay > SEND_DELAY_MAX) { - pr_err("delay value should be not greater" - " then %d\n", SEND_DELAY_MAX); - return -EINVAL; - } - - ret = parport_register_driver(&pps_gen_parport_driver); - if (ret) { - pr_err("unable to register with parport\n"); - return ret; - } - - return 0; -} - -static void __exit pps_gen_parport_exit(void) -{ - parport_unregister_driver(&pps_gen_parport_driver); - pr_info("hrtimer avg error is %ldns\n", hrtimer_error); -} - -module_init(pps_gen_parport_init); -module_exit(pps_gen_parport_exit); +module_parport_driver(pps_gen_parport_driver); MODULE_AUTHOR("Alexander Gordeev "); -MODULE_DESCRIPTION(DRVDESC); +MODULE_DESCRIPTION("parallel port PPS signal generator"); MODULE_LICENSE("GPL"); -- cgit v1.2.3