The patch titled
provide rtc_cmos platform device
has been removed from the -mm tree. Its filename was
provide-rtc_cmos-platform-device-take-2.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: provide rtc_cmos platform device
From: Stas Sergeev <stsp@xxxxxxxx>
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 <stsp@xxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Cc: Adam Belay <ambx1@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/rtc.c | 34 ++++++++++++++++++++++++++++++++++
drivers/rtc/rtc-cmos.c | 31 ++++++++++++++++---------------
2 files changed, 50 insertions(+), 15 deletions(-)
diff -puN arch/x86/kernel/rtc.c~provide-rtc_cmos-platform-device-take-2 arch/x86/kernel/rtc.c
--- a/arch/x86/kernel/rtc.c~provide-rtc_cmos-platform-device-take-2
+++ a/arch/x86/kernel/rtc.c
@@ -4,6 +4,8 @@
#include <linux/acpi.h>
#include <linux/bcd.h>
#include <linux/mc146818rtc.h>
+#include <linux/platform_device.h>
+#include <linux/pnp.h>
#include <asm/time.h>
#include <asm/vsyscall.h>
@@ -197,3 +199,35 @@ unsigned long long native_read_tsc(void)
}
EXPORT_SYMBOL(native_read_tsc);
+
+static struct resource rtc_resources[] = {
+ [0] = {
+ .start = RTC_PORT(0),
+ .end = RTC_PORT(1),
+ .flags = IORESOURCE_IO,
+ },
+ [1] = {
+ .start = RTC_IRQ,
+ .end = RTC_IRQ,
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_device rtc_device = {
+ .name = "rtc_cmos",
+ .id = -1,
+ .resource = rtc_resources,
+ .num_resources = ARRAY_SIZE(rtc_resources),
+};
+
+static __init int add_rtc_cmos(void)
+{
+#ifdef CONFIG_PNP
+ if (!pnp_platform_devices)
+ platform_device_register(&rtc_device);
+#else
+ platform_device_register(&rtc_device);
+#endif /* CONFIG_PNP */
+ return 0;
+}
+device_initcall(add_rtc_cmos);
diff -puN drivers/rtc/rtc-cmos.c~provide-rtc_cmos-platform-device-take-2 drivers/rtc/rtc-cmos.c
--- a/drivers/rtc/rtc-cmos.c~provide-rtc_cmos-platform-device-take-2
+++ a/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_platf
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");
_
Patches currently in -mm which might be from stsp@xxxxxxxx are
origin.patch
linux-next.patch
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