From 6498a96c8c9ce8ae4078e586a607851491e29a33 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@kernel.org>
Date: Thu, 4 Aug 2022 17:09:57 +0200
Subject: [PATCH] usb: dwc3: qcom: fix runtime PM wakeup
Git-commit: 6498a96c8c9ce8ae4078e586a607851491e29a33
References: git-fixes
Patch-mainline: v6.0-rc4

A device must enable wakeups during runtime suspend regardless of
whether it is capable and allowed to wake the system up from system
suspend.

Fixes: 2664deb09306 ("usb: dwc3: qcom: Honor wakeup enabled/disabled state")
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220804151001.23612-6-johan+linaro@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/usb/dwc3/dwc3-qcom.c |   19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -344,7 +344,7 @@ static void dwc3_qcom_enable_interrupts(
 	dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq);
 }
 
-static int dwc3_qcom_suspend(struct dwc3_qcom *qcom)
+static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup)
 {
 	u32 val;
 	int i, ret;
@@ -363,7 +363,7 @@ static int dwc3_qcom_suspend(struct dwc3
 	if (ret)
 		dev_warn(qcom->dev, "failed to disable interconnect: %d\n", ret);
 
-	if (device_may_wakeup(qcom->dev))
+	if (wakeup)
 		dwc3_qcom_enable_interrupts(qcom);
 
 	qcom->is_suspended = true;
@@ -371,7 +371,7 @@ static int dwc3_qcom_suspend(struct dwc3
 	return 0;
 }
 
-static int dwc3_qcom_resume(struct dwc3_qcom *qcom)
+static int dwc3_qcom_resume(struct dwc3_qcom *qcom, bool wakeup)
 {
 	int ret;
 	int i;
@@ -379,7 +379,7 @@ static int dwc3_qcom_resume(struct dwc3_
 	if (!qcom->is_suspended)
 		return 0;
 
-	if (device_may_wakeup(qcom->dev))
+	if (wakeup)
 		dwc3_qcom_disable_interrupts(qcom);
 
 	for (i = 0; i < qcom->num_clocks; i++) {
@@ -890,9 +890,11 @@ static int dwc3_qcom_remove(struct platf
 static int __maybe_unused dwc3_qcom_pm_suspend(struct device *dev)
 {
 	struct dwc3_qcom *qcom = dev_get_drvdata(dev);
+	bool wakeup = device_may_wakeup(dev);
 	int ret = 0;
 
-	ret = dwc3_qcom_suspend(qcom);
+
+	ret = dwc3_qcom_suspend(qcom, wakeup);
 	if (!ret)
 		qcom->pm_suspended = true;
 
@@ -902,9 +904,10 @@ static int __maybe_unused dwc3_qcom_pm_s
 static int __maybe_unused dwc3_qcom_pm_resume(struct device *dev)
 {
 	struct dwc3_qcom *qcom = dev_get_drvdata(dev);
+	bool wakeup = device_may_wakeup(dev);
 	int ret;
 
-	ret = dwc3_qcom_resume(qcom);
+	ret = dwc3_qcom_resume(qcom, wakeup);
 	if (!ret)
 		qcom->pm_suspended = false;
 
@@ -915,14 +918,14 @@ static int __maybe_unused dwc3_qcom_runt
 {
 	struct dwc3_qcom *qcom = dev_get_drvdata(dev);
 
-	return dwc3_qcom_suspend(qcom);
+	return dwc3_qcom_suspend(qcom, true);
 }
 
 static int __maybe_unused dwc3_qcom_runtime_resume(struct device *dev)
 {
 	struct dwc3_qcom *qcom = dev_get_drvdata(dev);
 
-	return dwc3_qcom_resume(qcom);
+	return dwc3_qcom_resume(qcom, true);
 }
 
 static const struct dev_pm_ops dwc3_qcom_dev_pm_ops = {