It turns out that the Apple Mac Mini comes back from suspend in legacy
mode.
The simplest and most obvious fix would seem to be the following trivial
one-liner, which just enables ACPI mode after any suspend event.
Comments? Can anybody see any downsides to just doing something this
obvious, and doing it unconditionally? I've seen a much more complicated
patch that only does this for Apple hardware, but I wouldn't be surprised
at all if this is more common.
In fact, googling for the symptoms ("nobody cared" and "acpi_irq" and
"suspend") gives quite a number of hits, so I would not be surprised at
all if this is not Apple-related at all, but that we should always have
done this.
Comments?
Linus
---
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 56f861e..7b6c146 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -109,6 +108,11 @@ static int acpi_pm_enter(suspend_state_t
local_irq_restore(flags);
printk(KERN_DEBUG "Back to C!\n");
+ /*
+ * Make sure we're back in ACPI mode!
+ */
+ acpi_enable();
+
/* restore processor state
* We should only be here if we're coming back from STR or STD.
* And, in the case of the latter, the memory image should have already
-
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