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Add some basic resume trace facilities

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Considering that there isn't a lot of hw we can depend on during resume,
this is about as good as it gets.

This is x86-only for now, although the basic concept (and most of the
code) will certainly work on almost any platform.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Linus Torvalds 2006-06-24 14:27:42 -07:00
parent d384ea691f
commit eb71c87a49
6 changed files with 279 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

7
include/asm-generic/rtc.h
View file

@ -114,6 +114,7 @@ static inline unsigned int get_rtc_time(struct rtc_time *time)
/* Set the current date and time in the real time clock. */
static inline int set_rtc_time(struct rtc_time *time)
{
unsigned long flags;
unsigned char mon, day, hrs, min, sec;
unsigned char save_control, save_freq_select;
unsigned int yrs;
@ -131,7 +132,7 @@ static inline int set_rtc_time(struct rtc_time *time)
if (yrs > 255) /* They are unsigned */
return -EINVAL;
spin_lock_irq(&rtc_lock);
spin_lock_irqsave(&rtc_lock, flags);
#ifdef CONFIG_MACH_DECSTATION
real_yrs = yrs;
leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) ||
@ -152,7 +153,7 @@ static inline int set_rtc_time(struct rtc_time *time)
* whether the chip is in binary mode or not.
*/
if (yrs > 169) {
spin_unlock_irq(&rtc_lock);
spin_unlock_irqrestore(&rtc_lock, flags);
return -EINVAL;
}
@ -187,7 +188,7 @@ static inline int set_rtc_time(struct rtc_time *time)
CMOS_WRITE(save_control, RTC_CONTROL);
CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
spin_unlock_irq(&rtc_lock);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}