Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 08/16] [Suspend2] Can suspend? | Date | Tue, 27 Jun 2006 08:33:42 +1000 |
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Test whether resume2= points to a recognised signature. That is, can we even try to suspend?
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend.c | 24 ++++++++++++++++++++++++ 1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 504eed7..bda4c2a 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -575,3 +575,27 @@ void suspend_cleanup(void) up(&pm_sem); } +static int can_suspend(void) +{ + if (down_trylock(&pm_sem)) { + set_result_state(SUSPEND_ABORTED); + set_result_state(SUSPEND_PM_SEM); + return 0; + } + + if (!test_suspend_state(SUSPEND_CAN_SUSPEND)) + suspend_attempt_to_parse_resume_device(); + + if (!test_suspend_state(SUSPEND_CAN_SUSPEND)) { + printk(name_suspend "Software suspend is disabled.\n" + "This may be because you haven't put something along " + "the lines of\n\nresume2=swap:/dev/hda1\n\n" + "in lilo.conf or equivalent. (Where /dev/hda1 is your " + "swap partition).\n"); + set_result_state(SUSPEND_ABORTED); + return 0; + } + + return 1; +} + -- Nigel Cunningham nigel at suspend2 dot net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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