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Write ACPI sleep state to /sys/power/state instead of /proc/acpi/sleep

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From http://acpi.sourceforge.net/documentation/sleep.html:

/proc/acpi is being replaced by interfaces in /sys and new software
should not look in /proc. Users of 2.6 are advised to use the new file
in sysfs: /sys/power/state.

Metalshark says:
February 15th, 2008 at 6:15 am

In shutdown you use “/proc/acpi/sleep”, would it be advisable to use the
new sysfs method and use that if available and if not use proc (at runtime)
with compile time options to disable proc/sysfs methods?

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
This commit is contained in:
Claudio Matsuoka committed 2008-02-16 19:37:21 -02:00
1 parent bbe281db55
commit 9a2b6890e5
3 files changed
+5 -2
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Changelog
+2
View File
@@ -3,6 +3,8 @@
- replace system("touch") with touch() in finit-mod (Metalshark) - replace system("touch") with touch() in finit-mod (Metalshark)
- disable NO_HCTOSYS by default to match stock Eeepc kernel - disable NO_HCTOSYS by default to match stock Eeepc kernel
- drop system("rm -f") to clean /tmp, its a fresh mounted tmpfs - drop system("rm -f") to clean /tmp, its a fresh mounted tmpfs
- write ACPI sleep state to /sys/power/state instead of
/proc/acpi/sleep (Metalshark)
0.1 (20081214) 0.1 (20081214)
- initial release - initial release
finit-alt.c
+1 -1
View File
@@ -373,7 +373,7 @@ void shutdown(int sig)
if (sig == SIGINT || sig == SIGUSR1) if (sig == SIGINT || sig == SIGUSR1)
reboot(RB_AUTOBOOT); reboot(RB_AUTOBOOT);
if ((fd = open("/proc/acpi/sleep", O_WRONLY)) >= 0) { if ((fd = open("/sys/power/state", O_WRONLY)) >= 0) {
write(fd, "5", 1); write(fd, "5", 1);
close(fd); close(fd);
} }
finit-mod.c
+2 -1
View File
@@ -34,6 +34,7 @@ Changelog from the original Eeepc fastinit:
- Add –directisa to hwclock if user has disabled CONFIG_GENRTC and enabled - Add –directisa to hwclock if user has disabled CONFIG_GENRTC and enabled
CONFIG_RTC but not CONFIG_HPET_TIMER and CONFIG_HPET_RTC_IRQ (by Metalshark) CONFIG_RTC but not CONFIG_HPET_TIMER and CONFIG_HPET_RTC_IRQ (by Metalshark)
- Drop system() call to clean /tmp, it's a fresh mounted tmpfs - Drop system() call to clean /tmp, it's a fresh mounted tmpfs
- Change /proc/acpi/sleep to /sys/power/state (by Metalshark)
*/ */
@@ -311,7 +312,7 @@ void shutdown(int sig)
if (sig == SIGINT || sig == SIGUSR1) if (sig == SIGINT || sig == SIGUSR1)
reboot(RB_AUTOBOOT); reboot(RB_AUTOBOOT);
if ((fd = open("/proc/acpi/sleep", O_WRONLY)) >= 0) { if ((fd = open("/sys/power/state", O_WRONLY)) >= 0) {
write(fd, "5", 1); write(fd, "5", 1);
close(fd); close(fd);
} }