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PM: wakeup: Add extra debugging statement for multiple active IRQs

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Since commit cb1f65c1e1 ("PM: s2idle: ACPI: Fix wakeup interrupts
handling") was introduced the kernel can now handle multiple
simultaneous interrupts during wakeup.  Ths uncovered some existing
subtle firmware bugs where multiple IRQs are unintentionally active.

To help with fixing those bugs add an extra message when PM debugging
is enabled that can show the individual IRQs triggered as if a variety
are fired they'll potentially be lost as /sys/power/pm_wakeup_irq only
contains the first one that triggered the wakeup after resume is
complete but all may be needed to demonstrate the whole picture.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=215770
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
[ rjw: Added empty line after if () ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mario Limonciello 2022-08-24 20:36:30 -05:00 committed by Rafael J. Wysocki
parent bd8092def9
commit cb3e7d624c
1 changed files with 2 additions and 0 deletions
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2
drivers/base/power/wakeup.c
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@ -944,6 +944,8 @@ void pm_system_irq_wakeup(unsigned int irq_number)
else
irq_number = 0;
pm_pr_dbg("Triggering wakeup from IRQ %d\n", irq_number);
raw_spin_unlock_irqrestore(&wakeup_irq_lock, flags);
if (irq_number)