[PATCH net-next 4/5] net: ipa: enable wakeup on IPA interrupt

Alex Elder
2020-09-09T00:22:30Z

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

Signed-off-by: Alex Elder <elder@linaro.org>
---
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