Once upon a time, before
commit 3195ef59cb42 ("x86: Do full rtc synchronization with ntp")
in 2013, the function set only the minute and seconds registers
of the CMOS RTC. This is no longer true, so rename the function to
mach_set_cmos_time.
Signed-off-by: Mateusz Jończyk <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: [email protected]
Cc: "H. Peter Anvin" <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Brijesh Singh <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
---
v3:
- add more people to the Cc list.
---
arch/x86/include/asm/mc146818rtc.h | 2 +-
arch/x86/kernel/rtc.c | 4 ++--
arch/x86/kernel/x86_init.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/mc146818rtc.h b/arch/x86/include/asm/mc146818rtc.h
index 97198001e567..6115bb3d5795 100644
--- a/arch/x86/include/asm/mc146818rtc.h
+++ b/arch/x86/include/asm/mc146818rtc.h
@@ -95,7 +95,7 @@ static inline unsigned char current_lock_cmos_reg(void)
unsigned char rtc_cmos_read(unsigned char addr);
void rtc_cmos_write(unsigned char val, unsigned char addr);
-extern int mach_set_rtc_mmss(const struct timespec64 *now);
+extern int mach_set_cmos_time(const struct timespec64 *now);
extern void mach_get_cmos_time(struct timespec64 *now);
#define RTC_IRQ 8
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 1cadc8a15267..349046434513 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -27,13 +27,13 @@ DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL(rtc_lock);
/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
+ * In order to set the CMOS clock precisely, mach_set_cmos_time has to be
* called 500 ms after the second nowtime has started, because when
* nowtime is written into the registers of the CMOS clock, it will
* jump to the next second precisely 500 ms later. Check the Motorola
* MC146818A or Dallas DS12887 data sheet for details.
*/
-int mach_set_rtc_mmss(const struct timespec64 *now)
+int mach_set_cmos_time(const struct timespec64 *now)
{
unsigned long long nowtime = now->tv_sec;
struct rtc_time tm;
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index e84ee5cdbd8c..57353519bc11 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -138,7 +138,7 @@ struct x86_platform_ops x86_platform __ro_after_init = {
.calibrate_cpu = native_calibrate_cpu_early,
.calibrate_tsc = native_calibrate_tsc,
.get_wallclock = mach_get_cmos_time,
- .set_wallclock = mach_set_rtc_mmss,
+ .set_wallclock = mach_set_cmos_time,
.iommu_shutdown = iommu_shutdown_noop,
.is_untracked_pat_range = is_ISA_range,
.nmi_init = default_nmi_init,
--
2.25.1
The following commit has been merged into the x86/timers branch of tip:
Commit-ID: e1a6bc7c6969527dbe0afa4801a0237e41e26b1b
Gitweb: https://git.kernel.org/tip/e1a6bc7c6969527dbe0afa4801a0237e41e26b1b
Author: Mateusz Jończyk <[email protected]>
AuthorDate: Sat, 13 Aug 2022 15:10:34 +02:00
Committer: Ingo Molnar <[email protected]>
CommitterDate: Sun, 14 Aug 2022 11:24:29 +02:00
x86/rtc: Rename mach_set_rtc_mmss() to mach_set_cmos_time()
Once upon a time, before this commit in 2013:
3195ef59cb42 ("x86: Do full rtc synchronization with ntp")
... the mach_set_rtc_mmss() function set only the minutes and seconds
registers of the CMOS RTC - hence the '_mmss' postfix.
This is no longer true, so rename the function to mach_set_cmos_time().
[ mingo: Expanded changelog a bit. ]
Signed-off-by: Mateusz Jończyk <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
arch/x86/include/asm/mc146818rtc.h | 2 +-
arch/x86/kernel/rtc.c | 4 ++--
arch/x86/kernel/x86_init.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/mc146818rtc.h b/arch/x86/include/asm/mc146818rtc.h
index 9719800..6115bb3 100644
--- a/arch/x86/include/asm/mc146818rtc.h
+++ b/arch/x86/include/asm/mc146818rtc.h
@@ -95,7 +95,7 @@ static inline unsigned char current_lock_cmos_reg(void)
unsigned char rtc_cmos_read(unsigned char addr);
void rtc_cmos_write(unsigned char val, unsigned char addr);
-extern int mach_set_rtc_mmss(const struct timespec64 *now);
+extern int mach_set_cmos_time(const struct timespec64 *now);
extern void mach_get_cmos_time(struct timespec64 *now);
#define RTC_IRQ 8
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 1cadc8a..3490464 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -27,13 +27,13 @@ DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL(rtc_lock);
/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be
+ * In order to set the CMOS clock precisely, mach_set_cmos_time has to be
* called 500 ms after the second nowtime has started, because when
* nowtime is written into the registers of the CMOS clock, it will
* jump to the next second precisely 500 ms later. Check the Motorola
* MC146818A or Dallas DS12887 data sheet for details.
*/
-int mach_set_rtc_mmss(const struct timespec64 *now)
+int mach_set_cmos_time(const struct timespec64 *now)
{
unsigned long long nowtime = now->tv_sec;
struct rtc_time tm;
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index e84ee5c..5735351 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -138,7 +138,7 @@ struct x86_platform_ops x86_platform __ro_after_init = {
.calibrate_cpu = native_calibrate_cpu_early,
.calibrate_tsc = native_calibrate_tsc,
.get_wallclock = mach_get_cmos_time,
- .set_wallclock = mach_set_rtc_mmss,
+ .set_wallclock = mach_set_cmos_time,
.iommu_shutdown = iommu_shutdown_noop,
.is_untracked_pat_range = is_ISA_range,
.nmi_init = default_nmi_init,