netdev - [PATCH net-next] net: ipa: use dev PM wakeirq handling

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Message-Id: <20230127202758.2913612-1-caleb.connolly@linaro.org>
Date:   Fri, 27 Jan 2023 20:27:58 +0000
From:   Caleb Connolly <caleb.connolly@...aro.org>
To:     Alex Elder <elder@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     elder@...nel.org, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, phone-devel@...r.kernel.org
Subject: [PATCH net-next] net: ipa: use dev PM wakeirq handling

Replace the enable_irq_wake() call with one to dev_pm_set_wake_irq()
instead. This will let the dev PM framework automatically manage the
the wakeup capability of the ipa IRQ and ensure that userspace requests
to enable/disable wakeup for the IPA via sysfs are respected.

Signed-off-by: Caleb Connolly <caleb.connolly@...aro.org>
---
 drivers/net/ipa/ipa_interrupt.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c
index c19cd27ac852..9a1153e80a3a 100644
--- a/drivers/net/ipa/ipa_interrupt.c
+++ b/drivers/net/ipa/ipa_interrupt.c
@@ -22,6 +22,7 @@
 #include <linux/types.h>
 #include <linux/interrupt.h>
 #include <linux/pm_runtime.h>
+#include <linux/pm_wakeirq.h>
 
 #include "ipa.h"
 #include "ipa_reg.h"
@@ -269,9 +270,9 @@ struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa)
 		goto err_kfree;
 	}
 
-	ret = enable_irq_wake(irq);
+	ret = dev_pm_set_wake_irq(dev, irq);
 	if (ret) {
-		dev_err(dev, "error %d enabling wakeup for \"ipa\" IRQ\n", ret);
+		dev_err(dev, "error %d registering \"ipa\" IRQ as wakeirq\n", ret);
 		goto err_free_irq;
 	}
 
@@ -289,11 +290,8 @@ struct ipa_interrupt *ipa_interrupt_config(struct ipa *ipa)
 void ipa_interrupt_deconfig(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);
+	dev_pm_clear_wake_irq(dev);
 	free_irq(interrupt->irq, interrupt);
 	kfree(interrupt);
 }
-- 
2.39.0