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pps: clients: parport: Switch to use module_parport_driver()

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Switch to use module_parport_driver() to reduce boilerplate code.

Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210607153729.58623-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2021-06-07 18:37:29 +03:00 committed by Greg Kroah-Hartman
parent fa11c81ce2
commit 9b945d74a5
1 changed files with 8 additions and 34 deletions
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42
drivers/pps/clients/pps_parport.c
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@ -22,8 +22,6 @@
#include <linux/parport.h>
#include <linux/pps_kernel.h>
#define DRVDESC "parallel port PPS client"
/* module parameters */
#define CLEAR_WAIT_MAX 100
@ -138,6 +136,12 @@ static void parport_attach(struct parport *port)
.dev = NULL
};
if (clear_wait > CLEAR_WAIT_MAX) {
pr_err("clear_wait value should be not greater then %d\n",
CLEAR_WAIT_MAX);
return;
}
device = kzalloc(sizeof(struct pps_client_pp), GFP_KERNEL);
if (!device) {
pr_err("memory allocation failed, not attaching\n");
@ -214,38 +218,8 @@ static struct parport_driver pps_parport_driver = {
.detach = parport_detach,
.devmodel = true,
};
/* module staff */
static int __init pps_parport_init(void)
{
int ret;
pr_info(DRVDESC "\n");
if (clear_wait > CLEAR_WAIT_MAX) {
pr_err("clear_wait value should be not greater"
" then %d\n", CLEAR_WAIT_MAX);
return -EINVAL;
}
ret = parport_register_driver(&pps_parport_driver);
if (ret) {
pr_err("unable to register with parport\n");
return ret;
}
return 0;
}
static void __exit pps_parport_exit(void)
{
parport_unregister_driver(&pps_parport_driver);
}
module_init(pps_parport_init);
module_exit(pps_parport_exit);
module_parport_driver(pps_parport_driver);
MODULE_AUTHOR("Alexander Gordeev <lasaine@lvk.cs.msu.su>");
MODULE_DESCRIPTION(DRVDESC);
MODULE_DESCRIPTION("parallel port PPS client");
MODULE_LICENSE("GPL");