From 1da2e3d679a8ea2d9e82040359a706da0bd3bef6 Mon Sep 17 00:00:00 2001 From: Stas Sergeev Date: Thu, 12 Jun 2008 15:21:54 -0700 Subject: provide rtc_cmos platform device Recently (around 2.6.25) I've noticed that RTC no longer works for me. It turned out this is because I use pnpacpi=off kernel option to work around the parport_pc bugs. I always did so, but RTC used to work fine in the past, and now it have regressed. The patch fixes the problem by creating the platform device for the RTC when PNP is disabled. This may also help running the PNP-enabled kernel on an older PCs. Signed-off-by: Stas Sergeev Cc: David Brownell Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Bjorn Helgaas Cc: Adam Belay Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-cmos.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index d060a06ce05..d7bb9bac71d 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -905,19 +905,7 @@ static struct pnp_driver cmos_pnp_driver = { .resume = cmos_pnp_resume, }; -static int __init cmos_init(void) -{ - return pnp_register_driver(&cmos_pnp_driver); -} -module_init(cmos_init); - -static void __exit cmos_exit(void) -{ - pnp_unregister_driver(&cmos_pnp_driver); -} -module_exit(cmos_exit); - -#else /* no PNP */ +#endif /* CONFIG_PNP */ /*----------------------------------------------------------------*/ @@ -958,20 +946,33 @@ static struct platform_driver cmos_platform_driver = { static int __init cmos_init(void) { +#ifdef CONFIG_PNP + if (pnp_platform_devices) + return pnp_register_driver(&cmos_pnp_driver); + else + return platform_driver_probe(&cmos_platform_driver, + cmos_platform_probe); +#else return platform_driver_probe(&cmos_platform_driver, cmos_platform_probe); +#endif /* CONFIG_PNP */ } module_init(cmos_init); static void __exit cmos_exit(void) { +#ifdef CONFIG_PNP + if (pnp_platform_devices) + pnp_unregister_driver(&cmos_pnp_driver); + else + platform_driver_unregister(&cmos_platform_driver); +#else platform_driver_unregister(&cmos_platform_driver); +#endif /* CONFIG_PNP */ } module_exit(cmos_exit); -#endif /* !PNP */ - MODULE_AUTHOR("David Brownell"); MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs"); MODULE_LICENSE("GPL"); -- cgit v1.2.3