When the wakeup attribute is set, GPIO button is supposed to set
irqflag - IRQF_NO_SUSPEND to request irq. So when the system enters
the suspend sleep mode, the GPIO irq keeps enabled and is able to
wake the system up.
The affected/tested machines include Dell Venue 11 Pro and Asus T100TA.
Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx>
---
drivers/input/keyboard/gpio_keys.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 2db1324..40f3963 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -503,6 +503,9 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
if (!button->can_disable)
irqflags |= IRQF_SHARED;
+ if (button->wakeup)
+ irqflags |= IRQF_NO_SUSPEND;
+
error = request_any_context_irq(bdata->irq, isr, irqflags, desc, bdata);
if (error < 0) {
dev_err(dev, "Unable to claim irq %d; error %d\n",
--
1.7.10.4
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