Subject: [PATCH net-next v2 6/7] net: ipa: enable wakeup on IPA interrupt

From: Alex Elder <[email-masked]>
Date: Fri, 11 Sep 2020 19:45:31 -0500

Now that we handle wakeup interrupts properly, arrange for the IPA
interrupt to be treated as a wakeup interrupt.

Signed-off-by: Alex Elder <[email-masked]>
---
 drivers/net/ipa/ipa_interrupt.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c
index 90353987c45fc..cc1ea28f7bc2e 100644
--- a/drivers/net/ipa/ipa_interrupt.c
+++ b/drivers/net/ipa/ipa_interrupt.c
@@ -237,8 +237,16 @@ struct ipa_interrupt *ipa_interrupt_setup(struct ipa *ipa)
 		goto err_kfree;
 	}
 
+	ret = enable_irq_wake(irq);
+	if (ret) {
+		dev_err(dev, "error %d enabling wakeup for \"ipa\" IRQ\n", ret);
+		goto err_free_irq;
+	}
+
 	return interrupt;
 
+err_free_irq:
+	free_irq(interrupt->irq, interrupt);
 err_kfree:
 	kfree(interrupt);
 
@@ -248,6 +256,12 @@ struct ipa_interrupt *ipa_interrupt_setup(struct ipa *ipa)
 /* Tear down the IPA interrupt framework */
 void ipa_interrupt_teardown(struct ipa_interrupt *interrupt)
 {
+	struct device *dev = &interrupt->ipa->pdev->dev;
+	int ret;
+
+	ret = disable_irq_wake(interrupt->irq);
+	if (ret)
+		dev_err(dev, "error %d disabling \"ipa\" IRQ wakeup\n", ret);
 	free_irq(interrupt->irq, interrupt);
 	kfree(interrupt);
 }
-- 
2.20.1